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4th Gen T1XX - 2020-2026 generation coverage
2020-2026 GMC Sierra 2500HD service guide ADAS Calibration & Module Programming
Choose a repair service below or find your module by part number. Onsite help is available in Dallas-Fort Worth, with mail-in module service nationwide.
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Find your module
76 documented GMC Sierra 2500HD module records across the 2020-2026 generation. Search by module name or part number, then open a result for requirements and repair options.
No matching records. Try a shorter part number or clear the filters. You can still request help if your module is not listed.
ECU / Engine
ECM - 6.6L L8T V8 Gasoline 4 records
OBD Programming Port
Documented for 2020 within this generation. Confirm the exact vehicle by VIN.
Coverage and replacement notes
Documented years: 2020
Donor must match part family ~12694 (VERIFY GMDB BY VIN) - requires cloning
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- ~12694 (VERIFY GMDB BY VIN)
- Protocol / method
- OBD Programming Port
- Coding required
- Yes
- Cloning supported
- Yes
- Chip / MCU
- Delco E80 / Bosch ECM
- Notes
- SPS programming via TIS2WEB. VIN tie required. PASS-Key III+ security parameter transfer from old ECM. Idle relearn procedure after replacement. Cam phaser relearn via GDS2. Injector balance rate reset. Battery must be stable (>=12.4V or charger connected) during programming. L8T pairs with Allison 6L90 - verify transmission quick learn after ECM programming.
OBD Programming Port
Documented for 2021 within this generation. Confirm the exact vehicle by VIN.
Coverage and replacement notes
Documented years: 2021
Donor must match part family ~12694 (VERIFY GMDB) - requires cloning
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- ~12694 (VERIFY GMDB)
- Protocol / method
- OBD Programming Port
- Coding required
- Yes
- Cloning supported
- Yes
- Chip / MCU
- Delco E80
- Notes
- SPS via TIS2WEB. VIN tie. PASS-Key III+ parameter transfer. Cam phaser relearn. Injector balance rate reset. Idle relearn. Allison 6L90 TCM quick learn after ECM programming.
OBD Programming Port
Documented for 2022 within this generation. Confirm the exact vehicle by VIN.
Coverage and replacement notes
Documented years: 2022
Donor must match part family ~12694 (VERIFY GMDB) - requires cloning
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- ~12694 (VERIFY GMDB)
- Protocol / method
- OBD Programming Port
- Coding required
- Yes
- Cloning supported
- Yes
- Chip / MCU
- Delco E80
- Notes
- SPS via TIS2WEB. VIN tie. PASS-Key transfer. Cam phaser relearn. Injector balance reset. Idle relearn. Allison 6L90 quick learn after.
OBD Programming Port
Documented for 2023-2026 within this generation. Confirm the exact vehicle by VIN.
Coverage and replacement notes
Documented years: 2023, 2024, 2025, 2026
Donor must match part family ~12694 (VERIFY GMDB) - requires cloning
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- ~12694 (VERIFY GMDB)
- Protocol / method
- OBD Programming Port
- Coding required
- Yes
- Cloning supported
- Yes
- Chip / MCU
- Delco E80
- Notes
- SPS via TIS2WEB. VIN tie. PASS-Key transfer. Cam phaser relearn. Injector balance reset. Allison 6L90 quick learn after.
ECM - 6.6L L5P Duramax Diesel 4 records
OBD Programming Port
Documented for 2020 within this generation. Confirm the exact vehicle by VIN.
Coverage and replacement notes
Documented years: 2020
Donor must match part family ~12708 (VERIFY GMDB BY VIN) - requires cloning
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- ~12708 (VERIFY GMDB BY VIN)
- Protocol / method
- OBD Programming Port
- Coding required
- Yes
- Cloning supported
- Yes
- Chip / MCU
- Delco/Bosch diesel ECM
- Notes
- DIESEL CRITICAL: SPS programming via TIS2WEB. VIN tie + PASS-Key parameter transfer. After ECM replacement: DPF (Diesel Particulate Filter) adaptation reset required via GDS2 - do not skip or vehicle will initiate forced regeneration cycles. DEF (Diesel Exhaust Fluid) system relearn. Injector return flow calibration per cylinder. EGR valve position relearn. NOx sensor upstream/downstream relearn via GDS2 special functions. Glow plug module communication check. Programming takes longer than gas ECM - allow extended SPS time on TIS2Web. Allison 10-speed L8T0 TCM quick learn required after ECM programming.
OBD Programming Port
Documented for 2021 within this generation. Confirm the exact vehicle by VIN.
Coverage and replacement notes
Documented years: 2021
Donor must match part family ~12708 (VERIFY GMDB) - requires cloning
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- ~12708 (VERIFY GMDB)
- Protocol / method
- OBD Programming Port
- Coding required
- Yes
- Cloning supported
- Yes
- Chip / MCU
- Delco/Bosch diesel ECM
- Notes
- DIESEL CRITICAL: SPS via TIS2WEB. VIN tie + PASS-Key transfer. DPF adaptation reset, DEF relearn, injector return flow cal, EGR position relearn, NOx sensor relearn via GDS2. Allison 10-speed quick learn after programming.
OBD Programming Port
Documented for 2022 within this generation. Confirm the exact vehicle by VIN.
Coverage and replacement notes
Documented years: 2022
Donor must match part family ~12708 (VERIFY GMDB) - requires cloning
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- ~12708 (VERIFY GMDB)
- Protocol / method
- OBD Programming Port
- Coding required
- Yes
- Cloning supported
- Yes
- Chip / MCU
- Delco/Bosch diesel ECM
- Notes
- DIESEL CRITICAL: SPS via TIS2WEB. DPF adaptation reset, DEF relearn, injector return flow cal, EGR relearn, NOx sensor relearn required after replacement. Allison 10-speed quick learn after.
OBD Programming Port
Documented for 2023-2026 within this generation. Confirm the exact vehicle by VIN.
Coverage and replacement notes
Documented years: 2023, 2024, 2025, 2026
Donor must match part family ~12708 (VERIFY GMDB) - requires cloning
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- ~12708 (VERIFY GMDB)
- Protocol / method
- OBD Programming Port
- Coding required
- Yes
- Cloning supported
- Yes
- Chip / MCU
- Delco/Bosch diesel ECM
- Notes
- DIESEL CRITICAL: SPS via TIS2WEB. DPF adaptation reset, DEF relearn, injector return flow cal, EGR relearn, NOx sensor relearn after replacement. Allison 10-speed quick learn after.
TCM - Allison 6L90 (L8T Gas) 3 records
OBD Programming Port
Documented for 2020 within this generation. Confirm the exact vehicle by VIN.
Coverage and replacement notes
Documented years: 2020
Donor must match part family ~24285 (VERIFY GMDB) - requires cloning
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- ~24285 (VERIFY GMDB)
- Protocol / method
- OBD Programming Port
- Coding required
- Yes
- Cloning supported
- Yes
- Chip / MCU
- Delco TCM
- Notes
- SPS programming via TIS2WEB. GDS2 transmission quick learn after replacement. Adaptive shift data reset. L8T gas engine only.
OBD Programming Port
Documented for 2021 within this generation. Confirm the exact vehicle by VIN.
Coverage and replacement notes
Documented years: 2021
Donor must match part family ~24285 (VERIFY GMDB) - requires cloning
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- ~24285 (VERIFY GMDB)
- Protocol / method
- OBD Programming Port
- Coding required
- Yes
- Cloning supported
- Yes
- Chip / MCU
- Delco TCM
- Notes
- SPS via TIS2WEB. GDS2 quick learn. Adaptive shift reset. Verify all 6 gears on road test.
OBD Programming Port
Documented for 2023 within this generation. Confirm the exact vehicle by VIN.
Coverage and replacement notes
Documented years: 2023
Donor must match part family ~24285 (VERIFY GMDB) - requires cloning
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- ~24285 (VERIFY GMDB)
- Protocol / method
- OBD Programming Port
- Coding required
- Yes
- Cloning supported
- Yes
- Chip / MCU
- Delco TCM
- Notes
- SPS via TIS2WEB. GDS2 quick learn. Adaptive shift reset.
TCM - Allison 10L1000 (L5P Diesel) 4 records
OBD Programming Port
Documented for 2020 within this generation. Confirm the exact vehicle by VIN.
Coverage and replacement notes
Documented years: 2020
Donor must match part family ~24294 (VERIFY GMDB) - requires cloning
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- ~24294 (VERIFY GMDB)
- Protocol / method
- OBD Programming Port
- Coding required
- Yes
- Cloning supported
- Yes
- Chip / MCU
- Allison TCM
- Notes
- SPS programming via TIS2WEB. GDS2 Allison 10-speed quick learn after replacement. Adaptive shift data reset. L5P diesel only. Verify shift quality through all 10 gears under load. High-torque diesel calibration - do not use gas TCM calibration files.
OBD Programming Port
Documented for 2021 within this generation. Confirm the exact vehicle by VIN.
Coverage and replacement notes
Documented years: 2021
Donor must match part family ~24294 (VERIFY GMDB) - requires cloning
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- ~24294 (VERIFY GMDB)
- Protocol / method
- OBD Programming Port
- Coding required
- Yes
- Cloning supported
- Yes
- Chip / MCU
- Allison TCM
- Notes
- SPS via TIS2WEB. GDS2 Allison 10-speed quick learn. Verify shift quality under load. L5P diesel only.
OBD Programming Port
Documented for 2022 within this generation. Confirm the exact vehicle by VIN.
Coverage and replacement notes
Documented years: 2022
Donor must match part family ~24294 (VERIFY GMDB) - requires cloning
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- ~24294 (VERIFY GMDB)
- Protocol / method
- OBD Programming Port
- Coding required
- Yes
- Cloning supported
- Yes
- Chip / MCU
- Allison TCM
- Notes
- SPS via TIS2WEB. GDS2 Allison 10-speed quick learn. Verify under load. L5P diesel only.
OBD Programming Port
Documented for 2023-2026 within this generation. Confirm the exact vehicle by VIN.
Coverage and replacement notes
Documented years: 2023, 2024, 2025, 2026
Donor must match part family ~24294 (VERIFY GMDB) - requires cloning
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- ~24294 (VERIFY GMDB)
- Protocol / method
- OBD Programming Port
- Coding required
- Yes
- Cloning supported
- Yes
- Chip / MCU
- Allison TCM
- Notes
- SPS via TIS2WEB. Allison 10-speed quick learn. L5P diesel only.
EBCM (Electronic Brake Control Module) 2 records
OBD Programming Port
Documented for 2020 within this generation. Confirm the exact vehicle by VIN.
Coverage and replacement notes
Documented years: 2020
Donor must match part family ~84 (VERIFY GMDB) - requires cloning
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- ~84 (VERIFY GMDB)
- Protocol / method
- OBD Programming Port
- Coding required
- Yes
- Cloning supported
- Yes
- Chip / MCU
- Continental/Delphi EBCM
- Notes
- SPS programming via TIS2WEB. GDS2 ABS/StabiliTrak initialization + 4-wheel bleed sequence after replacement. Steering angle sensor zero-point calibration required - GDS2 SAS reset, drive straight at 35+ mph. Heavy-duty brake system - pressure bleed preferred. Towing/trailer brake interaction: verify EBCM + TBC communication DTC-free after replacement.
OBD Programming Port
Documented for 2021 within this generation. Confirm the exact vehicle by VIN.
Coverage and replacement notes
Documented years: 2021
Donor must match part family ~84 (VERIFY GMDB) - requires cloning
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- ~84 (VERIFY GMDB)
- Protocol / method
- OBD Programming Port
- Coding required
- Yes
- Cloning supported
- Yes
- Chip / MCU
- Continental/Delphi EBCM
- Notes
- SPS via TIS2WEB. GDS2 ABS init + 4-wheel bleed. SAS zero-point cal - GDS2 reset, drive straight 35+ mph. Pressure bleed preferred for HD brake system.
ECM (GM Genuine Parts restricted catalog reference) 2 records
Documented for 2020 within this generation. Confirm the exact vehicle by VIN.
Coverage and replacement notes
Documented years: 2020
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- 12720006
- Notes
- Parts reference: GM Genuine Parts physical Engine Control Module (ECM) 12720006 for 2020 GMC Sierra 2500 HD, 6.6L V8 Turbo DIESEL, engine VIN character Y only; quantity 1 per vehicle. ACDelco Online Catalog V30E10R2, reviewed October 25, 2026, lists the exact expanded Sierra 2500 HD Buyers Guide year/engine branch. No RPO or ECU family is printed for this branch; none is assigned here. No build interval, emissions, drivetrain, transmission or equipment sub-allocation is established. Match complete VIN, original ECM and current OEM catalog before ordering; exact replacement selection, supersession, availability, stock, warranty eligibility, interchange and repair capability remain unverified. No gasoline, Sierra 1500/3500, Silverado, other model or other year application is included. No relationship to previously held GM HD module numbers is established; all prior selection holds remain. Existing scalar numbers and family/RPO statements are preserved separately without being revalidated by this reference.
Documented for 2021 within this generation. Confirm the exact vehicle by VIN.
Coverage and replacement notes
Documented years: 2021
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- 12720006
- Notes
- Parts reference: GM Genuine Parts physical Engine Control Module (ECM) 12720006 for 2021 GMC Sierra 2500 HD, 6.6L V8 Turbo DIESEL, engine VIN character Y only; quantity 1 per vehicle. ACDelco Online Catalog V30E10R2, reviewed October 25, 2026, lists the exact expanded Sierra 2500 HD Buyers Guide year/engine branch. No RPO or ECU family is printed for this branch; none is assigned here. No build interval, emissions, drivetrain, transmission or equipment sub-allocation is established. Match complete VIN, original ECM and current OEM catalog before ordering; exact replacement selection, supersession, availability, stock, warranty eligibility, interchange and repair capability remain unverified. No gasoline, Sierra 1500/3500, Silverado, other model or other year application is included. No relationship to previously held GM HD module numbers is established; all prior selection holds remain. Existing scalar numbers and family/RPO statements are preserved separately without being revalidated by this reference.
TCM - Allison 6L90 Verify by VIN 2022, 2024-2026 1 record
Documented for 2022, 2024-2026 within this generation. Confirm the exact vehicle by VIN.
Coverage and replacement notes
Documented years: 2022, 2024, 2025, 2026
Donor must match part family ~24285 (VERIFY GMDB) - requires cloning
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- ~24285 (VERIFY GMDB)
- Protocol / method
- OBD Programming Port
- Coding required
- Yes
- Cloning supported
- Yes
- Chip / MCU
- Delco TCM
- Notes
- SPS via TIS2WEB. GDS2 quick learn. Adaptive shift reset.
TCM / Transmission
TCU - Allison 10L1000 10-Speed Auto Verify by VIN 2020 24292130
Documented for 2020 within this generation. Confirm the exact vehicle by VIN.
Coverage and replacement notes
Documented years: 2020
Donor must match part family 24292130 - requires cloning
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- 24292130
- Protocol / method
- Bench
- Coding required
- Yes
- Cloning supported
- Yes
- Chip / MCU
- NXP MPC5748G
- Notes
- New 10-speed Allison. GM GDS2/MDI2 required. TranSynd 668 ATF. TCM relearn via scan tool. VIN coding required.
TCU - Allison 10L1000 10-Speed Auto Verify by VIN 2021 24292130
Documented for 2021 within this generation. Confirm the exact vehicle by VIN.
Coverage and replacement notes
Documented years: 2021
Donor must match part family 24292130 - requires cloning
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- 24292130
- Protocol / method
- Bench
- Coding required
- Yes
- Cloning supported
- Yes
- Chip / MCU
- NXP MPC5748G
- Notes
- GM GDS2/MDI2 required. TranSynd 668 ATF. TCM relearn via scan tool. VIN coding required.
TCU - Allison 10L1000 10-Speed Auto Verify by VIN 2022-2023 24292130
Documented for 2022-2023 within this generation. Confirm the exact vehicle by VIN.
Coverage and replacement notes
Documented years: 2022, 2023
Donor must match part family 24292130 - requires cloning
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- 24292130
- Protocol / method
- Bench
- Coding required
- Yes
- Cloning supported
- No
- Chip / MCU
- NXP MPC5748G
- Notes
- GM GDS2/MDI2 required. TranSynd 668 ATF. Security access required. TCM relearn via scan tool.
TCU - Allison 10L1000 10-Speed Auto Verify by VIN 2024-2026 24292130
Documented for 2024-2026 within this generation. Confirm the exact vehicle by VIN.
Coverage and replacement notes
Documented years: 2024, 2025, 2026
Donor must match part family 24292130 - requires cloning
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- 24292130
- Protocol / method
- Bench
- Coding required
- Yes
- Cloning supported
- No
- Chip / MCU
- NXP MPC5748G
- Notes
- GM GDS2/MDI2 required. TranSynd 668 ATF. Enhanced security. TCM relearn required.
BCM / Body electronics
Body Control Module (BCM) 5 records
Documented for 2020 within this generation. Confirm the exact vehicle by VIN.
Coverage and replacement notes
Documented years: 2020
Donor must match part family ~84252 (APTIV SECURECONNECT GEN 3 - VERIFY GMDB) - requires cloning
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- ~84252 (APTIV SECURECONNECT GEN 3 - VERIFY GMDB)
- Security
- PASS-Key III+
- Coding required
- Yes
- Cloning supported
- Yes
- Notes
- SPS programming via TIS2WEB required after replacement. Configure all vehicle RPO options: MultiPro tailgate mode, trailer brake controller, heated/ventilated seats, SBZA, Surround Vision, remote start. VIN programming required. Not plug and play.
Documented for 2021 within this generation. Confirm the exact vehicle by VIN.
Coverage and replacement notes
Documented years: 2021
Donor must match part family ~84252 (VERIFY GMDB) - requires cloning
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- ~84252 (VERIFY GMDB)
- Security
- PASS-Key III+
- Coding required
- Yes
- Cloning supported
- Yes
- Notes
- SPS programming via TIS2WEB. All customer keys present at relearn. Configure RPO options: MultiPro tailgate, TBC, heated/ventilated seats, SBZA, AT4 off-road mode (if equipped). VIN programming required.
Documented for 2022 within this generation. Confirm the exact vehicle by VIN.
Coverage and replacement notes
Documented years: 2022
Donor must match part family ~84252 (VERIFY GMDB) - requires cloning
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- ~84252 (VERIFY GMDB)
- Security
- PASS-Key III+
- Coding required
- Yes
- Cloning supported
- Yes
- Notes
- SPS via TIS2WEB. All keys at relearn. Configure RPO options: MultiPro tailgate, TBC, AT4X off-road mode (if equipped), OTA module association. VIN programming required.
Documented for 2023 within this generation. Confirm the exact vehicle by VIN.
Coverage and replacement notes
Documented years: 2023
Donor must match part family ~84252 (VERIFY GMDB) - requires cloning
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- ~84252 (VERIFY GMDB)
- Security
- PASS-Key III+
- Coding required
- Yes
- Cloning supported
- Yes
- Notes
- SPS via TIS2WEB. All keys at relearn. Configure RPO options: MultiPro tailgate, TBC, Super Cruise (RPO UDD) on Denali Ultimate. VIN programming required.
Documented for 2024-2026 within this generation. Confirm the exact vehicle by VIN.
Coverage and replacement notes
Documented years: 2024, 2025, 2026
Donor must match part family ~84252 (VERIFY GMDB) - requires cloning
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- ~84252 (VERIFY GMDB)
- Security
- PASS-Key III+
- Coding required
- Yes
- Cloning supported
- Yes
- Notes
- SPS via TIS2WEB. All keys at relearn. Configure RPO options including Super Cruise (RPO UDD) on Denali Ultimate. VIN programming required.
TCCM (Transfer Case Control Module) 4 records
Documented for 2020 within this generation. Confirm the exact vehicle by VIN.
Coverage and replacement notes
Documented years: 2020
Donor must match part family ~84 (VERIFY GMDB BY DRIVETRAIN) - requires cloning
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- ~84 (VERIFY GMDB BY DRIVETRAIN)
- Security
- standard_uds
- Coding required
- Yes
- Cloning supported
- Yes
- Notes
- 4WD variants. SPS PMI required via TIS2WEB. Transfer case learn procedure required after replacement via GDS2 special functions. DTC P0825 if TCCM not programmed. Verify 2WD/4H/4L operation on road test.
Documented for 2021 within this generation. Confirm the exact vehicle by VIN.
Coverage and replacement notes
Documented years: 2021
Donor must match part family ~84 (VERIFY GMDB) - requires cloning
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- ~84 (VERIFY GMDB)
- Security
- standard_uds
- Coding required
- Yes
- Cloning supported
- Yes
- Notes
- 4WD variants. SPS PMI via TIS2WEB. Transfer case learn via GDS2. DTC P0825 if not programmed.
Documented for 2022 within this generation. Confirm the exact vehicle by VIN.
Coverage and replacement notes
Documented years: 2022
Donor must match part family ~84 (VERIFY GMDB) - requires cloning
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- ~84 (VERIFY GMDB)
- Security
- standard_uds
- Coding required
- Yes
- Cloning supported
- Yes
- Notes
- SPS PMI via TIS2WEB. Transfer case learn via GDS2. DTC P0825 if not programmed.
Documented for 2023-2026 within this generation. Confirm the exact vehicle by VIN.
Coverage and replacement notes
Documented years: 2023, 2024, 2025, 2026
Donor must match part family ~84 (VERIFY GMDB) - requires cloning
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- ~84 (VERIFY GMDB)
- Security
- standard_uds
- Coding required
- Yes
- Cloning supported
- Yes
- Notes
- SPS PMI. Transfer case learn via GDS2.
Integrated Trailer Brake Control Module Verify by VIN 2020 1 record
Documented for 2020 within this generation. Confirm the exact vehicle by VIN.
Coverage and replacement notes
Documented years: 2020
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- ~23360 (VERIFY GMDB)
- Security
- standard_uds
- Coding required
- Yes
- Cloning supported
- No
- Notes
- GDS2 TBC initialization and gain calibration. Available LT and above. User-adjustable gain setting via DIC. Connect known-good trailer to verify brake output during calibration road test.
Trailer Brake Control Module 4 records
Documented for 2021 within this generation. Confirm the exact vehicle by VIN.
Coverage and replacement notes
Documented years: 2021
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- ~23360 (VERIFY GMDB)
- Security
- standard_uds
- Coding required
- Yes
- Cloning supported
- No
- Notes
- GDS2 TBC initialization and gain calibration. Connect trailer to verify brake output during road test.
Documented for 2022 within this generation. Confirm the exact vehicle by VIN.
Coverage and replacement notes
Documented years: 2022
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- ~23360 (VERIFY GMDB)
- Security
- standard_uds
- Coding required
- Yes
- Cloning supported
- No
- Notes
- GDS2 TBC initialization. Connect trailer to verify brake output during road test.
Documented for 2023 within this generation. Confirm the exact vehicle by VIN.
Coverage and replacement notes
Documented years: 2023
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- ~23360 (VERIFY GMDB)
- Security
- standard_uds
- Coding required
- Yes
- Cloning supported
- No
- Notes
- GDS2 TBC initialization. Connect trailer to verify brake output.
Documented for 2024-2026 within this generation. Confirm the exact vehicle by VIN.
Coverage and replacement notes
Documented years: 2024, 2025, 2026
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- ~23360 (VERIFY GMDB)
- Security
- standard_uds
- Coding required
- Yes
- Cloning supported
- No
- Notes
- GDS2 TBC init. Connect trailer to verify brake output.
SRS / Airbag
Sensing & Diagnostic Module (SDM) 9 records
Under center console
Documented for 2020-2023 within this generation. Confirm the exact vehicle by VIN.
Coverage and replacement notes
Documented years: 2020, 2021, 2022, 2023
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- 13524234
- Location
- Under center console
- Manufacturer
- Continental
- Notes
- Requires GM GDS2 / Tech2 or J2534 for SRS reset. DTC B0100 common after crash events. Wait 90 seconds after ignition off before disconnecting battery.
Under center console
Documented for 2020-2023 within this generation. Confirm the exact vehicle by VIN.
Coverage and replacement notes
Documented years: 2020, 2021, 2022, 2023
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- 84396838
- Location
- Under center console
- Manufacturer
- Continental
- Notes
- Requires GM GDS2 / Tech2 or J2534 for SRS reset. DTC B0100 common after crash events. Wait 90 seconds after ignition off before disconnecting battery.
Under center console
Documented for 2020-2023 within this generation. Confirm the exact vehicle by VIN.
Coverage and replacement notes
Documented years: 2020, 2021, 2022, 2023
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- 84396837
- Location
- Under center console
- Manufacturer
- Continental
- Notes
- Requires GM GDS2 / Tech2 or J2534 for SRS reset. DTC B0100 common after crash events. Wait 90 seconds after ignition off before disconnecting battery.
Under center console
Documented for 2020-2023 within this generation. Confirm the exact vehicle by VIN.
Coverage and replacement notes
Documented years: 2020, 2021, 2022, 2023
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- 13514198
- Location
- Under center console
- Manufacturer
- Continental
- Notes
- Requires GM GDS2 / Tech2 or J2534 for SRS reset. DTC B0100 common after crash events. Wait 90 seconds after ignition off before disconnecting battery.
Under center console
Documented for 2022-2023 within this generation. Confirm the exact vehicle by VIN.
Coverage and replacement notes
Documented years: 2022, 2023
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- 13548962
- Location
- Under center console
- Manufacturer
- Continental
- Notes
- Requires GM GDS2 / Tech2 or J2534 for SRS reset. DTC B0100 common after crash events. Wait 90 seconds after ignition off before disconnecting battery.
Under center console
Documented for 2024-2026 within this generation. Confirm the exact vehicle by VIN.
Coverage and replacement notes
Documented years: 2024, 2025, 2026
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- 13552072
- Location
- Under center console
- Manufacturer
- Continental
- Notes
- Requires GM GDS2 / Tech2 or J2534 for SRS reset. DTC B0100 common after crash events. Wait 90 seconds after ignition off before disconnecting battery.
Under center console
Documented for 2024-2026 within this generation. Confirm the exact vehicle by VIN.
Coverage and replacement notes
Documented years: 2024, 2025, 2026
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- 13525286
- Location
- Under center console
- Manufacturer
- Continental
- Notes
- Requires GM GDS2 / Tech2 or J2534 for SRS reset. DTC B0100 common after crash events. Wait 90 seconds after ignition off before disconnecting battery.
Under center console
Documented for 2024-2026 within this generation. Confirm the exact vehicle by VIN.
Coverage and replacement notes
Documented years: 2024, 2025, 2026
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- 85133042
- Location
- Under center console
- Manufacturer
- Continental
- Notes
- Requires GM GDS2 / Tech2 or J2534 for SRS reset. DTC B0100 common after crash events. Wait 90 seconds after ignition off before disconnecting battery.
Under center console
Documented for 2024-2026 within this generation. Confirm the exact vehicle by VIN.
Coverage and replacement notes
Documented years: 2024, 2025, 2026
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- 85133043
- Location
- Under center console
- Manufacturer
- Continental
- Notes
- Requires GM GDS2 / Tech2 or J2534 for SRS reset. DTC B0100 common after crash events. Wait 90 seconds after ignition off before disconnecting battery.
ABS / Brakes
Electronic Brake Control Module (EBCM) Verify by VIN 2020 ~84 (CONTINENTAL
Documented for 2020 within this generation. Confirm the exact vehicle by VIN.
Coverage and replacement notes
Documented years: 2020
Donor must match part family ~84 (CONTINENTAL - requires cloning
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- ~84 (CONTINENTAL
- Cloning supported
- Yes
- Notes
- GDS2 ABS/StabiliTrak initialization + 4-wheel brake bleed after replacement. Pressure bleed preferred on HD application. Steering angle sensor zero-point calibration - GDS2 SAS reset, drive straight at 35+ mph on level surface. StabiliTrak and Tow/Haul mode warnings persist until SAS learning completes. DTC C0035-C0045 common if wheel speed sensor disturbed during EBCM removal on large-bolt hub.
Electronic Brake Control Module (EBCM) Verify by VIN 2021 ~84 (VERIFY GMDB)
Documented for 2021 within this generation. Confirm the exact vehicle by VIN.
Coverage and replacement notes
Documented years: 2021
Donor must match part family ~84 (VERIFY GMDB) - requires cloning
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- ~84 (VERIFY GMDB)
- Cloning supported
- Yes
- Notes
- GDS2 ABS/StabiliTrak initialization + 4-wheel bleed. Pressure bleed preferred on HD. SAS zero-point calibration required - GDS2 reset, drive straight 35+ mph. StabiliTrak warning persists until SAS learning completes.
Electronic Brake Control Module (EBCM) Verify by VIN 2022 ~84 (VERIFY GMDB)
Documented for 2022 within this generation. Confirm the exact vehicle by VIN.
Coverage and replacement notes
Documented years: 2022
Donor must match part family ~84 (VERIFY GMDB) - requires cloning
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- ~84 (VERIFY GMDB)
- Cloning supported
- Yes
- Notes
- GDS2 ABS init + 4-wheel pressure bleed. SAS zero-point calibration - GDS2 reset, drive straight 35+ mph. StabiliTrak warning persists until SAS learning completes.
Electronic Brake Control Module (EBCM) Verify by VIN 2023 ~84 (VERIFY GMDB)
Documented for 2023 within this generation. Confirm the exact vehicle by VIN.
Coverage and replacement notes
Documented years: 2023
Donor must match part family ~84 (VERIFY GMDB) - requires cloning
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- ~84 (VERIFY GMDB)
- Cloning supported
- Yes
- Notes
- GDS2 ABS init + 4-wheel pressure bleed. SAS zero-point calibration required - drive straight 35+ mph after GDS2 reset.
Electronic Brake Control Module (EBCM) Verify by VIN 2024-2026 ~84 (VERIFY GMDB)
Documented for 2024-2026 within this generation. Confirm the exact vehicle by VIN.
Coverage and replacement notes
Documented years: 2024, 2025, 2026
Donor must match part family ~84 (VERIFY GMDB) - requires cloning
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- ~84 (VERIFY GMDB)
- Cloning supported
- Yes
- Notes
- GDS2 ABS init + 4-wheel pressure bleed. SAS zero-point calibration - drive straight 35+ mph after GDS2 reset.
Other modules
Instrument Panel Cluster (IPC) 8 records
Documented for 2020 within this generation. Confirm the exact vehicle by VIN.
Coverage and replacement notes
Documented years: 2020
Donor must match part family 84682069 - requires cloning
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- 84682069
- Cloning supported
- Yes
- Notes
- IPC cloning required for mileage preservation during replacement. Use Launch advanced programming tool or EEPROM programming tool for EEPROM read/write.
Documented for 2020-2021 within this generation. Confirm the exact vehicle by VIN.
Coverage and replacement notes
Documented years: 2020, 2021
Donor must match part family 84935280 - requires cloning
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- 84935280
- Cloning supported
- Yes
- Notes
- IPC cloning required for mileage preservation during replacement. Use Launch advanced programming tool or EEPROM programming tool for EEPROM read/write.
Documented for 2021-2022 within this generation. Confirm the exact vehicle by VIN.
Coverage and replacement notes
Documented years: 2021, 2022
Donor must match part family 84578513 - requires cloning
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- 84578513
- Cloning supported
- Yes
- Notes
- IPC cloning required for mileage preservation during replacement. Use Launch advanced programming tool or EEPROM programming tool for EEPROM read/write.
Documented for 2021-2022 within this generation. Confirm the exact vehicle by VIN.
Coverage and replacement notes
Documented years: 2021, 2022
Donor must match part family 84911492 - requires cloning
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- 84911492
- Cloning supported
- Yes
- Notes
- IPC cloning required for mileage preservation during replacement. Use Launch advanced programming tool or EEPROM programming tool for EEPROM read/write.
Documented for 2022-2023 within this generation. Confirm the exact vehicle by VIN.
Coverage and replacement notes
Documented years: 2022, 2023
Donor must match part family 84960258 - requires cloning
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- 84960258
- Cloning supported
- Yes
- Notes
- IPC cloning required for mileage preservation during replacement. Use Launch advanced programming tool or EEPROM programming tool for EEPROM read/write.
Documented for 2022-2023 within this generation. Confirm the exact vehicle by VIN.
Coverage and replacement notes
Documented years: 2022, 2023
Donor must match part family 84960253 - requires cloning
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- 84960253
- Cloning supported
- Yes
- Notes
- IPC cloning required for mileage preservation during replacement. Use Launch advanced programming tool or EEPROM programming tool for EEPROM read/write.
Documented for 2024-2025 within this generation. Confirm the exact vehicle by VIN.
Coverage and replacement notes
Documented years: 2024, 2025
Donor must match part family 85766102 - requires cloning
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- 85766102
- Cloning supported
- Yes
- Notes
- IPC cloning required for mileage preservation during replacement. Use Launch advanced programming tool or EEPROM programming tool for EEPROM read/write.
Documented for 2026 within this generation. Confirm the exact vehicle by VIN.
Coverage and replacement notes
Documented years: 2026
Donor must match part family 85X - requires cloning
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- 85X
- Cloning supported
- Yes
- Notes
- IPC cloning required for mileage preservation during replacement. Use Launch advanced programming tool or EEPROM programming tool for EEPROM read/write.
Steering Angle Sensor (SAS) Verify by VIN 1 record
Confirm the procedure for your VIN and part number. Review the documented notes below.
Coverage and replacement notes
Documented years: 2020, 2021, 2022, 2023, 2024, 2025, 2026
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Coding required
- Yes
- Notes
- INTEGRATED (SCM clock spring)
Connectivity / Accessories
Other 15 records
Documented for 2020 within this generation. Confirm the exact vehicle by VIN.
Coverage and replacement notes
Documented years: 2020
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- ~84 (VERIFY GMDB BY SCREEN SIZE)
- Notes
- SPS programming via TIS2WEB. 8-inch standard, 13.4-inch on Denali/AT4X builds. Apple CarPlay + Android Auto. Wireless CarPlay on 2022+ builds.
Documented for 2020 within this generation. Confirm the exact vehicle by VIN.
Coverage and replacement notes
Documented years: 2020
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- ~84 (VERIFY GMDB BY TRIM)
- Notes
- SPS programming via TIS2WEB. Mileage stored in BCM on T1 HD - IPC replacement does not reset odometer. Verify all gauge cluster functions and ProGrade Trailering System display after programming.
Documented for 2020 within this generation. Confirm the exact vehicle by VIN.
Coverage and replacement notes
Documented years: 2020
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- ~84 (VERIFY GMDB)
- Notes
- Available on SLT/Denali/AT4. Includes trailer camera view integration, trailer tire pressure monitoring, trailer sway detection. GDS2 module setup after replacement. Sway detection relies on EBCM + ProGrade module - verify both modules communicate DTC-free.
Documented for 2020 within this generation. Confirm the exact vehicle by VIN.
Coverage and replacement notes
Documented years: 2020
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- ~84 (VERIFY GMDB)
- Notes
- SPS programming via TIS2WEB. Steering angle sensor calibration after replacement - GDS2 SAS reset. Electric power steering on T1 HD 2020+ - not hydraulic. DTC C0455 if PSCM not programmed.
Documented for 2021 within this generation. Confirm the exact vehicle by VIN.
Coverage and replacement notes
Documented years: 2021
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- ~84 (VERIFY GMDB BY SCREEN SIZE)
- Notes
- SPS via TIS2WEB. 8-inch standard, 13.4-inch Denali. Apple CarPlay + Android Auto.
Documented for 2021 within this generation. Confirm the exact vehicle by VIN.
Coverage and replacement notes
Documented years: 2021
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- ~84 (VERIFY GMDB BY TRIM)
- Notes
- SPS via TIS2WEB. Mileage in BCM - IPC replacement does not reset odometer. Verify ProGrade Trailering display and tow metrics after programming.
Documented for 2021 within this generation. Confirm the exact vehicle by VIN.
Coverage and replacement notes
Documented years: 2021
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- ~84 (VERIFY GMDB)
- Notes
- SPS via TIS2WEB. SAS calibration after replacement. DTC C0455 if PSCM not programmed.
Documented for 2022 within this generation. Confirm the exact vehicle by VIN.
Coverage and replacement notes
Documented years: 2022
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- ~84 (VERIFY GMDB BY SCREEN SIZE)
- Notes
- SPS via TIS2WEB. 13.4-inch standard on Denali 2022+. Wireless CarPlay added 2022.
Documented for 2022 within this generation. Confirm the exact vehicle by VIN.
Coverage and replacement notes
Documented years: 2022
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- ~84 (VERIFY GMDB)
- Notes
- SPS via TIS2WEB. Mileage in BCM. Verify ProGrade Trailering display after programming.
Documented for 2022-2026 within this generation. Confirm the exact vehicle by VIN.
Coverage and replacement notes
Documented years: 2022, 2023, 2024, 2025, 2026
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- ~84 (VERIFY GMDB)
- Notes
- SPS via TIS2WEB. SAS calibration after replacement.
Documented for 2023 within this generation. Confirm the exact vehicle by VIN.
Coverage and replacement notes
Documented years: 2023
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- ~84 (VERIFY GMDB)
- Notes
- SPS via TIS2WEB. 13.4-inch standard on Denali Ultimate. OTA capable - VIN association after replacement.
Documented for 2023 within this generation. Confirm the exact vehicle by VIN.
Coverage and replacement notes
Documented years: 2023
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- ~84 (VERIFY GMDB)
- Notes
- Denali Ultimate only. GDS2 SPS2 initialization. OnStar subscription required. Map update via USB or OTA after module replacement. Attention camera (driver monitoring) function verify after windshield or interior repair.
Documented for 2023-2026 within this generation. Confirm the exact vehicle by VIN.
Coverage and replacement notes
Documented years: 2023, 2024, 2025, 2026
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- ~84 (VERIFY GMDB)
- Notes
- SPS via TIS2WEB. Mileage in BCM.
Documented for 2024-2026 within this generation. Confirm the exact vehicle by VIN.
Coverage and replacement notes
Documented years: 2024, 2025, 2026
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- ~84 (VERIFY GMDB)
- Notes
- SPS via TIS2WEB. 13.4-inch on Denali Ultimate. OTA capable.
Documented for 2024-2026 within this generation. Confirm the exact vehicle by VIN.
Coverage and replacement notes
Documented years: 2024, 2025, 2026
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- ~84 (VERIFY GMDB)
- Notes
- Denali Ultimate only. GDS2 SPS2 init. OnStar + HD map required. Map update after module replacement.
Reference information for 2020-2026. Coverage can vary by year and equipment. Confirm the VIN and full part number before ordering a replacement.
Vehicle overview
- Vehicle
- GMC Sierra 2500HD
- Model years
- 2020-2026
- Generation
- 4th Gen T1XX
- Platform
- T1XX
Tools we use for this vehicle
Factory scan, coding, and calibration access
GM GDS2 / GM Tech2Win / GM MDI 2
Factory routines and secure server authorization control this path when aftermarket coverage is not enough for the VIN.
ADAS scan, setup, and verification
Autel, Launch Tech, Topdon
Used where aftermarket coverage supports the procedure; OEM software remains required for locked factory routines.
Bench cloning and chip-level recovery
Alientech / Autotuner / Orange5 / Scanmatik / Flex / VVDI2 / PCMFlash / CGDI / X-Prog
Used only when the module, donor data, EEPROM, MCU, or crash-data workflow requires bench or chip-level handling.
Bench/chip-level only
Tool requirements
Basic OBD2 scanner
View capabilities and limitations
Supported work
- Read codes on SRS systems (9 documented rows)
- Read codes on ECU systems (20 documented rows)
- Read codes on BCM systems (14 documented rows)
- Read codes on TCU / TCM systems (4 documented rows)
- Read codes on ABS systems (5 documented rows)
- Read codes on IPC / SAS systems (9 documented rows)
- Read codes on Keys systems (3 documented rows)
- Read codes on Immobilizer systems (5 documented rows)
- Read codes on Accessory systems (15 documented rows)
Factory programming software (J2534)
View capabilities and limitations
Supported work
- Factory scan, coding, and calibration access: Factory routines and secure server authorization control this path when aftermarket coverage is not enough for the VIN.
Know this platform
This platform uses GMLAN (HS-CAN 500kbps + MS-CAN 33.3kbps); LIN bus body peripherals; OBD2 DLC Pin 6/14 HS-CAN 500kbps with ISO 15765-4 CAN (500kbps HS-CAN).
- CAN
- GMLAN (HS-CAN 500kbps + MS-CAN 33.3kbps); LIN bus body peripherals; OBD2 DLC Pin 6/14 HS-CAN 500kbps
- OBD
- ISO 15765-4 CAN (500kbps HS-CAN)
CAN architecture varies by year
OPENPILOT / COMMA.AI
Openpilot Compatibility
Not Supported
Not supported - sierra-2500hd not in openpilot support tree
Not in openpilot support tree as of April 2026.
Generation service summary for GMC Sierra 2500HD 4th Gen T1XX (2020-2026)
Generation coverage
This page consolidates GMC Sierra 2500HD service data for 2020-2026 across 7 model years; service information is available for 7 years.
Choose a yearADAS coverage
Merged ADAS coverage includes 28 system records, including Forward Camera (Monocular) (2020), Forward Radar (77GHz) (2020), Blind Spot Monitor Sensor - Left (BSM) (2020), and Blind Spot Monitor Sensor - Right (BSM) (2020). Year-marked systems apply only to the shown range.
View ADAS dataCalibration triggers
This generation has 33 merged calibration trigger records. Trigger applicability can vary by year - verify by VIN before setup.
View triggersProgrammable modules
The merged generation page indexes 76 programmable module records across SRS, ECU, BCM, TCU/TCM, ABS, IPC coverage. Part numbers are confirmed for the exact year/VIN.
View modulesCore Auto Logic capability
Core Auto Logic supports generation-level diagnostics, ADAS calibration, module programming, and security-access planning for the GMC Sierra 2500HD 2020-2026 span, with exact-year validation before service. Mail-in module service is available nationwide.
Get a quoteDo I need calibration?
Windshield Replacement 23
FEC Camera
2020required
FEC static calibration required via GDS2 after windshield replacement. Level surface, calibration target at WSM distance. DTC B127E common if calibration skipped. Use OEM-equivalent glass - aftermarket glass with incorrect rake angle causes calibration failure on T1 HD due to high mounting position.
Forward Collision Alert
2020required
FEC static calibration required via GDS2 after windshield replacement. Level surface, calibration target at WSM distance. DTC B127E common if calibration skipped. Use OEM-equivalent glass - aftermarket glass with incorrect rake angle causes calibration failure on T1 HD due to high mounting position.
AEB
2020required
FEC static calibration required via GDS2 after windshield replacement. Level surface, calibration target at WSM distance. DTC B127E common if calibration skipped. Use OEM-equivalent glass - aftermarket glass with incorrect rake angle causes calibration failure on T1 HD due to high mounting position.
Lane Keep Assist
2020required
FEC static calibration required via GDS2 after windshield replacement. Level surface, calibration target at WSM distance. DTC B127E common if calibration skipped. Use OEM-equivalent glass - aftermarket glass with incorrect rake angle causes calibration failure on T1 HD due to high mounting position.
Lane Departure Warning
2020required
FEC static calibration required via GDS2 after windshield replacement. Level surface, calibration target at WSM distance. DTC B127E common if calibration skipped. Use OEM-equivalent glass - aftermarket glass with incorrect rake angle causes calibration failure on T1 HD due to high mounting position.
FEC Camera
2021required
FEC static calibration via GDS2 required. Target at WSM distance. DTC B127E if skipped.
FCA
2021required
FEC static calibration via GDS2 required. Target at WSM distance. DTC B127E if skipped.
AEB
2021required
FEC static calibration via GDS2 required. Target at WSM distance. DTC B127E if skipped.
Lane Keep Assist
2021required
FEC static calibration via GDS2 required. Target at WSM distance. DTC B127E if skipped.
FEC Camera
2022required
FEC static calibration via GDS2. OTA-capable builds: verify camera firmware current before calibration.
FCA
2022required
FEC static calibration via GDS2. OTA-capable builds: verify camera firmware current before calibration.
AEB
2022required
FEC static calibration via GDS2. OTA-capable builds: verify camera firmware current before calibration.
Lane Keep Assist
2022required
FEC static calibration via GDS2. OTA-capable builds: verify camera firmware current before calibration.
FEC Camera
2023required
FEC static calibration required. Super Cruise builds: FEC calibration is prerequisite for Super Cruise re-enable. Complete FEC before Super Cruise initialization.
FCA
2023required
FEC static calibration required. Super Cruise builds: FEC calibration is prerequisite for Super Cruise re-enable. Complete FEC before Super Cruise initialization.
AEB
2023required
FEC static calibration required. Super Cruise builds: FEC calibration is prerequisite for Super Cruise re-enable. Complete FEC before Super Cruise initialization.
Lane Keep Assist
2023required
FEC static calibration required. Super Cruise builds: FEC calibration is prerequisite for Super Cruise re-enable. Complete FEC before Super Cruise initialization.
Super Cruise (if equipped)
2023required
FEC static calibration required. Super Cruise builds: FEC calibration is prerequisite for Super Cruise re-enable. Complete FEC before Super Cruise initialization.
FEC Camera
2024-2026required
FEC static calibration required. Super Cruise: FEC must be calibrated before Super Cruise re-enable. Attention camera function verify after any windshield or interior work on Super Cruise builds.
FCA
2024-2026required
FEC static calibration required. Super Cruise: FEC must be calibrated before Super Cruise re-enable. Attention camera function verify after any windshield or interior work on Super Cruise builds.
AEB
2024-2026required
FEC static calibration required. Super Cruise: FEC must be calibrated before Super Cruise re-enable. Attention camera function verify after any windshield or interior work on Super Cruise builds.
Lane Keep Assist
2024-2026required
FEC static calibration required. Super Cruise: FEC must be calibrated before Super Cruise re-enable. Attention camera function verify after any windshield or interior work on Super Cruise builds.
Super Cruise (Denali Ultimate)
2024-2026required
FEC static calibration required. Super Cruise: FEC must be calibrated before Super Cruise re-enable. Attention camera function verify after any windshield or interior work on Super Cruise builds.
Front Bumper Repair or Replacement 4
Front Radar (FCA/AEB)
2020required
Front radar static aim calibration required via GDS2 after any front bumper work. Inspect radar mounting bracket for deformation. Aftermarket winch plates and bull bars require standoff distance verification - radar aim tolerance is strict. Park assist sensors verify after bumper cover R&R.
Front Park Assist Sensors
2020required
Front radar static aim calibration required via GDS2 after any front bumper work. Inspect radar mounting bracket for deformation. Aftermarket winch plates and bull bars require standoff distance verification - radar aim tolerance is strict. Park assist sensors verify after bumper cover R&R.
Front Radar (FCA/AEB)
2021required
Radar static aim calibration via GDS2. Inspect bracket. Verify aftermarket accessory standoff distance.
Front Park Assist
2021required
Radar static aim calibration via GDS2. Inspect bracket. Verify aftermarket accessory standoff distance.
Rear Bumper Repair or Replacement 7
SBZA Rear Sensors
2020required
SBZA rear corner sensors require GDS2 initialization if removed or replaced. Drive-off self-calibration after PMI. Hitch camera re-registration if tailgate disturbed. Trailer hitch installation that physically relocates sensors triggers DTC B176C.
Rear Cross Traffic Alert
2020required
SBZA rear corner sensors require GDS2 initialization if removed or replaced. Drive-off self-calibration after PMI. Hitch camera re-registration if tailgate disturbed. Trailer hitch installation that physically relocates sensors triggers DTC B176C.
Hitch Guidance Camera
2020required
SBZA rear corner sensors require GDS2 initialization if removed or replaced. Drive-off self-calibration after PMI. Hitch camera re-registration if tailgate disturbed. Trailer hitch installation that physically relocates sensors triggers DTC B176C.
SBZA Sensors
2021required
SBZA initialization via GDS2 if sensors removed. Hitch camera re-registration if tailgate disturbed.
RCTA
2021required
SBZA initialization via GDS2 if sensors removed. Hitch camera re-registration if tailgate disturbed.
Hitch Camera
2021required
SBZA initialization via GDS2 if sensors removed. Hitch camera re-registration if tailgate disturbed.
2022-2026
Yes
BSD radar alignment required after rear bumper R&R. Use GDS2/MDI2.
DPF / DEF System Service (Diesel L5P) 5
ECM
2020required
DIESEL SPECIFIC: After DPF cleaning or replacement, DEF module service, or NOx sensor replacement - ECM DPF adaptation reset required via GDS2 special functions. NOx sensor upstream and downstream relearn. EGR valve position relearn. Failure to reset adaptation data causes premature forced DPF regeneration cycles and MIL illumination.
DPF
2020required
DIESEL SPECIFIC: After DPF cleaning or replacement, DEF module service, or NOx sensor replacement - ECM DPF adaptation reset required via GDS2 special functions. NOx sensor upstream and downstream relearn. EGR valve position relearn. Failure to reset adaptation data causes premature forced DPF regeneration cycles and MIL illumination.
DEF
2020required
DIESEL SPECIFIC: After DPF cleaning or replacement, DEF module service, or NOx sensor replacement - ECM DPF adaptation reset required via GDS2 special functions. NOx sensor upstream and downstream relearn. EGR valve position relearn. Failure to reset adaptation data causes premature forced DPF regeneration cycles and MIL illumination.
EGR
2020required
DIESEL SPECIFIC: After DPF cleaning or replacement, DEF module service, or NOx sensor replacement - ECM DPF adaptation reset required via GDS2 special functions. NOx sensor upstream and downstream relearn. EGR valve position relearn. Failure to reset adaptation data causes premature forced DPF regeneration cycles and MIL illumination.
NOx Sensors
2020required
DIESEL SPECIFIC: After DPF cleaning or replacement, DEF module service, or NOx sensor replacement - ECM DPF adaptation reset required via GDS2 special functions. NOx sensor upstream and downstream relearn. EGR valve position relearn. Failure to reset adaptation data causes premature forced DPF regeneration cycles and MIL illumination.
Any Collision 27
SDM
2020required
Full scan mandatory. SDM replace-only after hard deployment - no crash clear on T1 HD. Verify all impact sensors. Calibrate all disturbed ADAS systems before delivery. ProGrade Trailering system scan if rear damage occurred.
all deployed airbags and sensors
2020required
Full scan mandatory. SDM replace-only after hard deployment - no crash clear on T1 HD. Verify all impact sensors. Calibrate all disturbed ADAS systems before delivery. ProGrade Trailering system scan if rear damage occurred.
FEC Camera
2020required
Full scan mandatory. SDM replace-only after hard deployment - no crash clear on T1 HD. Verify all impact sensors. Calibrate all disturbed ADAS systems before delivery. ProGrade Trailering system scan if rear damage occurred.
Front Radar
2020required
Full scan mandatory. SDM replace-only after hard deployment - no crash clear on T1 HD. Verify all impact sensors. Calibrate all disturbed ADAS systems before delivery. ProGrade Trailering system scan if rear damage occurred.
SBZA Sensors
2020required
Full scan mandatory. SDM replace-only after hard deployment - no crash clear on T1 HD. Verify all impact sensors. Calibrate all disturbed ADAS systems before delivery. ProGrade Trailering system scan if rear damage occurred.
SDM
2021required
SDM replace-only after hard deployment. Full scan + ADAS recalibration mandatory before delivery.
all airbags
2021required
SDM replace-only after hard deployment. Full scan + ADAS recalibration mandatory before delivery.
FEC Camera
2021required
SDM replace-only after hard deployment. Full scan + ADAS recalibration mandatory before delivery.
Front Radar
2021required
SDM replace-only after hard deployment. Full scan + ADAS recalibration mandatory before delivery.
SBZA
2021required
SDM replace-only after hard deployment. Full scan + ADAS recalibration mandatory before delivery.
SDM
2022required
SDM replace-only after deployment. Full scan + ADAS recalibration mandatory.
all airbags
2022required
SDM replace-only after deployment. Full scan + ADAS recalibration mandatory.
FEC Camera
2022required
SDM replace-only after deployment. Full scan + ADAS recalibration mandatory.
Front Radar
2022required
SDM replace-only after deployment. Full scan + ADAS recalibration mandatory.
SBZA
2022required
SDM replace-only after deployment. Full scan + ADAS recalibration mandatory.
SDM
2023required
SDM replace-only. Full scan + ADAS recalibration. Super Cruise disable verification after any collision.
all airbags
2023required
SDM replace-only. Full scan + ADAS recalibration. Super Cruise disable verification after any collision.
FEC
2023required
SDM replace-only. Full scan + ADAS recalibration. Super Cruise disable verification after any collision.
Front Radar
2023required
SDM replace-only. Full scan + ADAS recalibration. Super Cruise disable verification after any collision.
SBZA
2023required
SDM replace-only. Full scan + ADAS recalibration. Super Cruise disable verification after any collision.
Super Cruise
2023required
SDM replace-only. Full scan + ADAS recalibration. Super Cruise disable verification after any collision.
SDM
2024-2026required
SDM replace-only after deployment. Full scan + ADAS recalibration. Super Cruise verification after any front-end collision.
all airbags
2024-2026required
SDM replace-only after deployment. Full scan + ADAS recalibration. Super Cruise verification after any front-end collision.
FEC
2024-2026required
SDM replace-only after deployment. Full scan + ADAS recalibration. Super Cruise verification after any front-end collision.
Front Radar
2024-2026required
SDM replace-only after deployment. Full scan + ADAS recalibration. Super Cruise verification after any front-end collision.
SBZA
2024-2026required
SDM replace-only after deployment. Full scan + ADAS recalibration. Super Cruise verification after any front-end collision.
Super Cruise
2024-2026required
SDM replace-only after deployment. Full scan + ADAS recalibration. Super Cruise verification after any front-end collision.
Lift Kit or Leveling Kit Installation 2
Front Radar (FCA/AEB)
2020required
Front radar aim and FEC camera calibration required after any suspension height change. Vehicle must be at final ride height before calibration. T1 HD is commonly lifted - this trigger applies to a high percentage of service units.
FEC Camera aim
2020required
Front radar aim and FEC camera calibration required after any suspension height change. Vehicle must be at final ride height before calibration. T1 HD is commonly lifted - this trigger applies to a high percentage of service units.
Any Module Replacement 10
BCM
2020required
SPS programming via TIS2WEB mandatory for all replaced modules via GDS2. RPO option configuration must be transferred or reconfigured. BCM replacement requires PASS-Key III+ key relearn with all keys present. Diesel ECM additionally requires emissions adaptation reset. Coordinate ECM/TCM relearn after programming.
ECM
2020required
SPS programming via TIS2WEB mandatory for all replaced modules via GDS2. RPO option configuration must be transferred or reconfigured. BCM replacement requires PASS-Key III+ key relearn with all keys present. Diesel ECM additionally requires emissions adaptation reset. Coordinate ECM/TCM relearn after programming.
TCM
2020required
SPS programming via TIS2WEB mandatory for all replaced modules via GDS2. RPO option configuration must be transferred or reconfigured. BCM replacement requires PASS-Key III+ key relearn with all keys present. Diesel ECM additionally requires emissions adaptation reset. Coordinate ECM/TCM relearn after programming.
EBCM
2020required
SPS programming via TIS2WEB mandatory for all replaced modules via GDS2. RPO option configuration must be transferred or reconfigured. BCM replacement requires PASS-Key III+ key relearn with all keys present. Diesel ECM additionally requires emissions adaptation reset. Coordinate ECM/TCM relearn after programming.
SDM
2020required
SPS programming via TIS2WEB mandatory for all replaced modules via GDS2. RPO option configuration must be transferred or reconfigured. BCM replacement requires PASS-Key III+ key relearn with all keys present. Diesel ECM additionally requires emissions adaptation reset. Coordinate ECM/TCM relearn after programming.
ICS
2020required
SPS programming via TIS2WEB mandatory for all replaced modules via GDS2. RPO option configuration must be transferred or reconfigured. BCM replacement requires PASS-Key III+ key relearn with all keys present. Diesel ECM additionally requires emissions adaptation reset. Coordinate ECM/TCM relearn after programming.
IPC
2020required
SPS programming via TIS2WEB mandatory for all replaced modules via GDS2. RPO option configuration must be transferred or reconfigured. BCM replacement requires PASS-Key III+ key relearn with all keys present. Diesel ECM additionally requires emissions adaptation reset. Coordinate ECM/TCM relearn after programming.
TCCM
2020required
SPS programming via TIS2WEB mandatory for all replaced modules via GDS2. RPO option configuration must be transferred or reconfigured. BCM replacement requires PASS-Key III+ key relearn with all keys present. Diesel ECM additionally requires emissions adaptation reset. Coordinate ECM/TCM relearn after programming.
TBC
2020required
SPS programming via TIS2WEB mandatory for all replaced modules via GDS2. RPO option configuration must be transferred or reconfigured. BCM replacement requires PASS-Key III+ key relearn with all keys present. Diesel ECM additionally requires emissions adaptation reset. Coordinate ECM/TCM relearn after programming.
PSCM
2020required
SPS programming via TIS2WEB mandatory for all replaced modules via GDS2. RPO option configuration must be transferred or reconfigured. BCM replacement requires PASS-Key III+ key relearn with all keys present. Diesel ECM additionally requires emissions adaptation reset. Coordinate ECM/TCM relearn after programming.
Forward Camera Replacement 1
2020-2026
Yes
Camera module replacement requires full recalibration using GDS2/MDI2.
Forward Radar Replacement 1
2020-2026
Yes
Radar module replacement requires alignment/calibration using GDS2/MDI2.
BSM Sensor Replacement 1
2020-2026
Yes
Blind spot monitoring sensor replacement requires calibration using GDS2/MDI2.
Mirror Replacement 1
2020-2026
Yes
Surround view mirror camera recalibration required after mirror R&R. Use GDS2/MDI2.
DPF / DEF / Injector Service (Diesel L5P) 10
ECM
2021required
DPF adaptation reset, DEF relearn, injector return flow cal, EGR position relearn, NOx sensor relearn via GDS2 special functions. Mandatory after any emission-system service.
DPF
2021required
DPF adaptation reset, DEF relearn, injector return flow cal, EGR position relearn, NOx sensor relearn via GDS2 special functions. Mandatory after any emission-system service.
DEF
2021required
DPF adaptation reset, DEF relearn, injector return flow cal, EGR position relearn, NOx sensor relearn via GDS2 special functions. Mandatory after any emission-system service.
EGR
2021required
DPF adaptation reset, DEF relearn, injector return flow cal, EGR position relearn, NOx sensor relearn via GDS2 special functions. Mandatory after any emission-system service.
NOx Sensors
2021required
DPF adaptation reset, DEF relearn, injector return flow cal, EGR position relearn, NOx sensor relearn via GDS2 special functions. Mandatory after any emission-system service.
ECM
2022required
DPF adaptation reset, DEF relearn, EGR relearn, NOx sensor relearn via GDS2 special functions after any emission system service.
DPF
2022required
DPF adaptation reset, DEF relearn, EGR relearn, NOx sensor relearn via GDS2 special functions after any emission system service.
DEF
2022required
DPF adaptation reset, DEF relearn, EGR relearn, NOx sensor relearn via GDS2 special functions after any emission system service.
EGR
2022required
DPF adaptation reset, DEF relearn, EGR relearn, NOx sensor relearn via GDS2 special functions after any emission system service.
NOx Sensors
2022required
DPF adaptation reset, DEF relearn, EGR relearn, NOx sensor relearn via GDS2 special functions after any emission system service.
Lift or Level Kit Installation 4
Front Radar
2021required
Radar aim and camera calibration required after suspension height change. Must be at final ride height. Very common trigger on Sierra 2500 HD.
FEC Camera
2021required
Radar aim and camera calibration required after suspension height change. Must be at final ride height. Very common trigger on Sierra 2500 HD.
Front Radar
2022required
Radar and camera calibration required at final ride height. Very common on Sierra 2500 HD.
FEC Camera
2022required
Radar and camera calibration required at final ride height. Very common on Sierra 2500 HD.
Front Bumper Repair 6
Front Radar
2022required
Radar aim calibration via GDS2. AT4X skid plate: confirm no FOV obstruction after reinstall.
Park Assist
2022required
Radar aim calibration via GDS2. AT4X skid plate: confirm no FOV obstruction after reinstall.
Front Radar
2023required
Radar aim calibration via GDS2. Super Cruise requires radar + FEC calibration before hands-free mode restored. Inspect bracket.
Super Cruise (if equipped)
2023required
Radar aim calibration via GDS2. Super Cruise requires radar + FEC calibration before hands-free mode restored. Inspect bracket.
Front Radar
2024-2026required
Radar aim calibration via GDS2. Super Cruise requires radar + FEC both calibrated. Inspect bracket.
Super Cruise
2024-2026required
Radar aim calibration via GDS2. Super Cruise requires radar + FEC both calibrated. Inspect bracket.
DPF / DEF Service (Diesel L5P) 10
ECM
2023required
DPF adaptation reset, DEF relearn, EGR relearn, NOx sensor relearn required after any diesel emissions system service.
DPF
2023required
DPF adaptation reset, DEF relearn, EGR relearn, NOx sensor relearn required after any diesel emissions system service.
DEF
2023required
DPF adaptation reset, DEF relearn, EGR relearn, NOx sensor relearn required after any diesel emissions system service.
EGR
2023required
DPF adaptation reset, DEF relearn, EGR relearn, NOx sensor relearn required after any diesel emissions system service.
NOx Sensors
2023required
DPF adaptation reset, DEF relearn, EGR relearn, NOx sensor relearn required after any diesel emissions system service.
ECM
2024-2026required
Mandatory DPF adaptation reset, DEF relearn, EGR relearn, NOx sensor relearn after any diesel emissions system service.
DPF
2024-2026required
Mandatory DPF adaptation reset, DEF relearn, EGR relearn, NOx sensor relearn after any diesel emissions system service.
DEF
2024-2026required
Mandatory DPF adaptation reset, DEF relearn, EGR relearn, NOx sensor relearn after any diesel emissions system service.
EGR
2024-2026required
Mandatory DPF adaptation reset, DEF relearn, EGR relearn, NOx sensor relearn after any diesel emissions system service.
NOx Sensors
2024-2026required
Mandatory DPF adaptation reset, DEF relearn, EGR relearn, NOx sensor relearn after any diesel emissions system service.
Lift or Level Kit 4
Front Radar
2023required
Radar and camera calibration required at final ride height.
FEC Camera
2023required
Radar and camera calibration required at final ride height.
Front Radar
2024-2026required
Radar and camera calibration required at final ride height. Very common trigger on Sierra 2500 HD.
FEC Camera
2024-2026required
Radar and camera calibration required at final ride height. Very common trigger on Sierra 2500 HD.
Year-by-year details
| Year | VIN split | Infotainment | Wireless CarPlay | Wireless Android Auto | Trim notes |
|---|---|---|---|---|---|
| 2020 | VIN pos 4-8 identifies series/body/engine. GM WMI: 1GK (GMC SUV), 1GT (GMC truck). Position 8 = engine code. Position 10 = model year code. | GMC Infotainment 3 | Multiple trim levels available. ADAS feature availability varies by trim and options package. Contact us for specific trim calibration requirements. | ||
| 2021 | VIN pos 4-8 identifies series/body/engine. GM WMI: 1GK (GMC SUV), 1GT (GMC truck). Position 8 = engine code. Position 10 = model year code. | GMC Infotainment 3 | Multiple trim levels available. ADAS feature availability varies by trim and options package. Contact us for specific trim calibration requirements. | ||
| 2022 | VIN pos 4-8 identifies series/body/engine. GM WMI: 1GK (GMC SUV), 1GT (GMC truck). Position 8 = engine code. Position 10 = model year code. | GMC Infotainment 3 | Multiple trim levels available. ADAS feature availability varies by trim and options package. Contact us for specific trim calibration requirements. | ||
| 2023 | VIN pos 4-8 identifies series/body/engine. GM WMI: 1GK (GMC SUV), 1GT (GMC truck). Position 8 = engine code. Position 10 = model year code. | GMC Infotainment 3 Premium | 1 | 1 | Multiple trim levels available. ADAS feature availability varies by trim and options package. Contact us for specific trim calibration requirements. |
| 2024 | VIN pos 4-8 identifies series/body/engine. GM WMI: 1GK (GMC SUV), 1GT (GMC truck). Position 8 = engine code. Position 10 = model year code. | GMC Infotainment 3 Premium | 1 | 1 | Multiple trim levels available. ADAS feature availability varies by trim and options package. Contact us for specific trim calibration requirements. |
| 2025 | VIN pos 4-8 identifies series/body/engine. GM WMI: 1GK (GMC SUV), 1GT (GMC truck). Position 8 = engine code. Position 10 = model year code. | GMC Infotainment 3 Premium | 1 | 1 | Multiple trim levels available. ADAS feature availability varies by trim and options package. Contact us for specific trim calibration requirements. |
| 2026 | VIN pos 4-8 identifies series/body/engine. GM WMI: 1GK (GMC SUV), 1GT (GMC truck). Position 8 = engine code. Position 10 = model year code. | GMC Infotainment 3 Premium | 1 | 1 | Multiple trim levels available. ADAS feature availability varies by trim and options package. Contact us for specific trim calibration requirements. |
What changes across 2020-2026
Differences versus the generation reference. Years not listed here match the shared platform data on this page.
2023
- Infotainment: GMC Infotainment 3 Premium (was GMC Infotainment 3)
- Wireless CarPlay: Yes
- Wireless Android Auto: Yes
2024
- Infotainment: GMC Infotainment 3 Premium (was GMC Infotainment 3)
- Wireless CarPlay: Yes
- Wireless Android Auto: Yes
2025
- Infotainment: GMC Infotainment 3 Premium (was GMC Infotainment 3)
- Wireless CarPlay: Yes
- Wireless Android Auto: Yes
2026
- Infotainment: GMC Infotainment 3 Premium (was GMC Infotainment 3)
- Wireless CarPlay: Yes
- Wireless Android Auto: Yes
28 ADAS systems documented across the 2020-2026 generation. Rows that apply to only part of the generation carries a year badge.
Filter by year
ADAS CALIBRATION MATRIX
ADAS systems on this vehicle
GM Safety Package: Forward Collision Alert/Automatic Emergency Braking, Lane Change Alert w/Blind Spot Monitoring (Side Blind Zone Alert), Rear Cross-Traffic Alert, HD Rear Camera; ProGrade Trailering System (SLT/Denali/AT4)
Scroll for part numbers and Details
| System | Type | Category | Cal. Type | Supported | Part # | Actions |
|---|---|---|---|---|---|---|
| Forward Camera (Monocular) 2020 | Forward Camera | Camera | Static | YES | ~84394 (VERIFY GMDB BY VIN) | |
| Forward Radar (77GHz) 2020 | Front Radar | Radar | Static | YES | ~84277 (VERIFY GMDB) | |
| Blind Spot Monitor Sensor - Left (BSM) 2020 | Side Radar | Radar | Static + Dynamic | YES | ~23367640 (VERIFY GMDB) | |
| Blind Spot Monitor Sensor - Right (BSM) 2020 | Side Radar | Radar | Static + Dynamic | YES | ~23367641 (VERIFY GMDB) | |
| HD Surround Vision Camera System (4-camera, if equipped) 2020 | Multi-Camera | Camera | Static | YES | ~84 EACH CAMERA (VERIFY GMDB) | |
| Trailer Brake Controller (TBC) 2020 | Trailer Integration | Other | None | YES | ~23360 (VERIFY GMDB) | |
| HD Rear Camera / Hitch Guidance 2020 | Rear Camera | Camera | None | YES | ~84495 (VERIFY GMDB) | |
| Forward Camera (Monocular) 2021 | Forward Camera | Camera | Static | YES | ~84394 (VERIFY GMDB BY VIN) | |
| Forward Radar (77GHz) 2021 | Front Radar | Radar | Static | YES | ~84277 (VERIFY GMDB) | |
| Blind Spot Monitor Sensor - Left (BSM) 2021 | Side Radar | Radar | Static + Dynamic | YES | ~23367640 (VERIFY GMDB) | |
| Blind Spot Monitor Sensor - Right (BSM) 2021-2026 | Side Radar | Radar | Static + Dynamic | YES | ~23367641 (VERIFY GMDB) | |
| HD Surround Vision Camera System (4-camera, if equipped) 2021 | Multi-Camera | Camera | Static | YES | ~84 EACH CAMERA (VERIFY GMDB) | |
| HD Rear Camera / Hitch Guidance 2021 | Rear Camera | Camera | None | YES | ~84495 (VERIFY GMDB) | |
| Forward Camera (Monocular) 2022 | Forward Camera | Camera | Static | YES | ~84394 (VERIFY GMDB BY VIN) | |
| Forward Radar (77GHz) 2022 | Front Radar | Radar | Static | YES | ~84277 (VERIFY GMDB) | |
| Blind Spot Monitor Sensor - Left (BSM) 2022 | Side Radar | Radar | Static + Dynamic | YES | ~23367640 (VERIFY GMDB) | |
| HD Surround Vision (4-camera, if equipped) 2022 | Multi-Camera | Camera | Static | YES | ~84 EACH (VERIFY GMDB) | |
| HD Rear Camera / Hitch Guidance 2022, 2024-2026 | Rear Camera | Camera | None | YES | ~84495 (VERIFY GMDB) | |
| Forward Camera (Monocular) 2023 | Forward Camera | Camera | Static | YES | ~84394 (VERIFY GMDB) | |
| Forward Radar (77GHz) 2023 | Front Radar | Radar | Static | YES | ~84277 (VERIFY GMDB) | |
| Super Cruise (Denali Ultimate RPO UDD) 2023 | Multi-Sensor (Camera + Radar + GPS) | Fused | Static | YES | ~84690 (VERIFY GMDB) | |
| Blind Spot Monitor Sensor - Left (BSM) 2023 | Side Radar | Radar | Static + Dynamic | YES | ~23367640 (VERIFY GMDB) | |
| HD Surround Vision (4-camera, if equipped) 2023-2026 | Multi-Camera | Camera | Static | YES | ~84 EACH (VERIFY GMDB) | |
| HD Rear Camera / Hitch Guidance 2023 | Rear Camera | Camera | None | YES | ~84495 (VERIFY GMDB) | |
| Forward Camera (Monocular) 2024-2026 | Forward Camera | Camera | Static | YES | ~84394 (VERIFY GMDB) | |
| Forward Radar (77GHz) 2024-2026 | Front Radar | Radar | Static | YES | ~84277 (VERIFY GMDB) | |
| Super Cruise (Denali Ultimate RPO UDD) 2024-2026 | Multi-Sensor (Camera + Radar + GPS) | Fused | Static | YES | ~84690 (VERIFY GMDB) | |
| Blind Spot Monitor Sensor - Left (BSM) 2024-2026 | Side Radar | Radar | Static + Dynamic | YES | ~23367640 (VERIFY GMDB) |
ADAS SYSTEM
YES Supported
Identification
- System type
- Module category
- Sensor location
Part Numbers
- OEM
- Alternative
Calibration & Triggers
- Calibration type
- Programming approach
- Requires PMI
- Trigger events
Technical Notes
- Chip / MCU
- Service notes
Need this calibrated?
Get a quote for ADAS calibration WHEN IS CALIBRATION REQUIRED?
Triggers for ADAS recalibration
Windshield Replacement 2020 Affected: FEC Camera, Forward Collision Alert, AEB, Lane Keep Assist, Lane Departure Warning
FEC static calibration required via GDS2 after windshield replacement. Level surface, calibration target at WSM distance. DTC B127E common if calibration skipped. Use OEM-equivalent glass - aftermarket glass with incorrect rake angle causes calibration failure on T1 HD due to high mounting position.
Front Bumper Repair or Replacement 2020 Affected: Front Radar (FCA/AEB), Front Park Assist Sensors
Front radar static aim calibration required via GDS2 after any front bumper work. Inspect radar mounting bracket for deformation. Aftermarket winch plates and bull bars require standoff distance verification - radar aim tolerance is strict. Park assist sensors verify after bumper cover R&R.
Rear Bumper Repair or Replacement 2020 Affected: SBZA Rear Sensors, Rear Cross Traffic Alert, Hitch Guidance Camera
SBZA rear corner sensors require GDS2 initialization if removed or replaced. Drive-off self-calibration after PMI. Hitch camera re-registration if tailgate disturbed. Trailer hitch installation that physically relocates sensors triggers DTC B176C.
DPF / DEF System Service (Diesel L5P) 2020 Affected: ECM, DPF, DEF, EGR, NOx Sensors
DIESEL SPECIFIC: After DPF cleaning or replacement, DEF module service, or NOx sensor replacement - ECM DPF adaptation reset required via GDS2 special functions. NOx sensor upstream and downstream relearn. EGR valve position relearn. Failure to reset adaptation data causes premature forced DPF regeneration cycles and MIL illumination.
Any Collision 2020 Affected: SDM, all deployed airbags and sensors, FEC Camera, Front Radar, SBZA Sensors
Full scan mandatory. SDM replace-only after hard deployment - no crash clear on T1 HD. Verify all impact sensors. Calibrate all disturbed ADAS systems before delivery. ProGrade Trailering system scan if rear damage occurred.
Lift Kit or Leveling Kit Installation 2020 Affected: Front Radar (FCA/AEB), FEC Camera aim
Front radar aim and FEC camera calibration required after any suspension height change. Vehicle must be at final ride height before calibration. T1 HD is commonly lifted - this trigger applies to a high percentage of service units.
Any Module Replacement 2020 Affected: BCM, ECM, TCM, EBCM, SDM, ICS, IPC, TCCM, TBC, PSCM
SPS programming via TIS2WEB mandatory for all replaced modules via GDS2. RPO option configuration must be transferred or reconfigured. BCM replacement requires PASS-Key III+ key relearn with all keys present. Diesel ECM additionally requires emissions adaptation reset. Coordinate ECM/TCM relearn after programming.
Forward Camera Replacement
Camera module replacement requires full recalibration using GDS2/MDI2.
Forward Radar Replacement
Radar module replacement requires alignment/calibration using GDS2/MDI2.
BSM Sensor Replacement
Blind spot monitoring sensor replacement requires calibration using GDS2/MDI2.
Mirror Replacement
Surround view mirror camera recalibration required after mirror R&R. Use GDS2/MDI2.
Windshield Replacement 2021 Affected: FEC Camera, FCA, AEB, Lane Keep Assist
FEC static calibration via GDS2 required. Target at WSM distance. DTC B127E if skipped.
Front Bumper Repair or Replacement 2021 Affected: Front Radar (FCA/AEB), Front Park Assist
Radar static aim calibration via GDS2. Inspect bracket. Verify aftermarket accessory standoff distance.
Rear Bumper Repair or Replacement 2021 Affected: SBZA Sensors, RCTA, Hitch Camera
SBZA initialization via GDS2 if sensors removed. Hitch camera re-registration if tailgate disturbed.
DPF / DEF / Injector Service (Diesel L5P) 2021 Affected: ECM, DPF, DEF, EGR, NOx Sensors
DPF adaptation reset, DEF relearn, injector return flow cal, EGR position relearn, NOx sensor relearn via GDS2 special functions. Mandatory after any emission-system service.
Lift or Level Kit Installation 2021 Affected: Front Radar, FEC Camera
Radar aim and camera calibration required after suspension height change. Must be at final ride height. Very common trigger on Sierra 2500 HD.
Any Collision 2021 Affected: SDM, all airbags, FEC Camera, Front Radar, SBZA
SDM replace-only after hard deployment. Full scan + ADAS recalibration mandatory before delivery.
Windshield Replacement 2022 Affected: FEC Camera, FCA, AEB, Lane Keep Assist
FEC static calibration via GDS2. OTA-capable builds: verify camera firmware current before calibration.
Front Bumper Repair 2022 Affected: Front Radar, Park Assist
Radar aim calibration via GDS2. AT4X skid plate: confirm no FOV obstruction after reinstall.
DPF / DEF / Injector Service (Diesel L5P) 2022 Affected: ECM, DPF, DEF, EGR, NOx Sensors
DPF adaptation reset, DEF relearn, EGR relearn, NOx sensor relearn via GDS2 special functions after any emission system service.
Any Collision 2022 Affected: SDM, all airbags, FEC Camera, Front Radar, SBZA
SDM replace-only after deployment. Full scan + ADAS recalibration mandatory.
Lift or Level Kit Installation 2022 Affected: Front Radar, FEC Camera
Radar and camera calibration required at final ride height. Very common on Sierra 2500 HD.
Rear Bumper Repair or Replacement 2022-2026
BSD radar alignment required after rear bumper R&R. Use GDS2/MDI2.
Windshield Replacement 2023 Affected: FEC Camera, FCA, AEB, Lane Keep Assist, Super Cruise (if equipped)
FEC static calibration required. Super Cruise builds: FEC calibration is prerequisite for Super Cruise re-enable. Complete FEC before Super Cruise initialization.
Front Bumper Repair 2023 Affected: Front Radar, Super Cruise (if equipped)
Radar aim calibration via GDS2. Super Cruise requires radar + FEC calibration before hands-free mode restored. Inspect bracket.
DPF / DEF Service (Diesel L5P) 2023 Affected: ECM, DPF, DEF, EGR, NOx Sensors
DPF adaptation reset, DEF relearn, EGR relearn, NOx sensor relearn required after any diesel emissions system service.
Any Collision 2023 Affected: SDM, all airbags, FEC, Front Radar, SBZA, Super Cruise
SDM replace-only. Full scan + ADAS recalibration. Super Cruise disable verification after any collision.
Lift or Level Kit 2023 Affected: Front Radar, FEC Camera
Radar and camera calibration required at final ride height.
Windshield Replacement 2024-2026 Affected: FEC Camera, FCA, AEB, Lane Keep Assist, Super Cruise (Denali Ultimate)
FEC static calibration required. Super Cruise: FEC must be calibrated before Super Cruise re-enable. Attention camera function verify after any windshield or interior work on Super Cruise builds.
Front Bumper Repair 2024-2026 Affected: Front Radar, Super Cruise
Radar aim calibration via GDS2. Super Cruise requires radar + FEC both calibrated. Inspect bracket.
DPF / DEF Service (Diesel L5P) 2024-2026 Affected: ECM, DPF, DEF, EGR, NOx Sensors
Mandatory DPF adaptation reset, DEF relearn, EGR relearn, NOx sensor relearn after any diesel emissions system service.
Any Collision 2024-2026 Affected: SDM, all airbags, FEC, Front Radar, SBZA, Super Cruise
SDM replace-only after deployment. Full scan + ADAS recalibration. Super Cruise verification after any front-end collision.
Lift or Level Kit 2024-2026 Affected: Front Radar, FEC Camera
Radar and camera calibration required at final ride height. Very common trigger on Sierra 2500 HD.
8 gateway, immobilizer, and security items documented across the 2020-2026 generation.
ARCHITECTURE & CONNECTIVITY
Architecture & Connectivity
- Body Construction
- Body-on-frame; high-strength steel ladder frame; steel cab and bed
- OBD Protocol
- ISO 15765-4 CAN (500kbps HS-CAN)
- CAN Architecture
- GMLAN (HS-CAN 500kbps + MS-CAN 33.3kbps); LIN bus body peripherals; OBD2 DLC Pin 6/14 HS-CAN 500kbps
- Infotainment
- GMC Infotainment 3 / Infotainment 3 Plus - 8-inch standard; 13.4-inch Denali/AT4X; Apple CarPlay + Android Auto
- OTA Capable
- No
- Infotainment Name
- GMC Infotainment 3
- ECU/TCM Unlocking
- Contact us
- ECU/TCM Flashing
- Contact us
WHAT WE RESOLVE
4th Gen T1XX (2020-2026) common module and ADAS issues
- ADAS calibration drift Watch for calibration needs after windshield, bumper, suspension, camera, or radar work. Documented systems include Forward Camera (Monocular) (2020), Forward Radar (77GHz) (2020), Blind Spot Monitor Sensor - Left (BSM) (2020), and Blind Spot Monitor Sensor - Right (BSM) (2020). Year-marked systems apply only to the shown range.
- SRS crash-data and warning light SRS service can involve Sensing & Diagnostic Module (SDM) (2020-2023), Sensing & Diagnostic Module (SDM) (2022-2023), and Sensing & Diagnostic Module (SDM) (2024-2026). Part numbers and crash-data workflow are confirmed for the exact year/VIN.
- Replacement module setup ECU/PCM replacement programming, BCM configuration, TCU/TCM cloning, ABS/EBCM setup are represented in the merged generation data. Rows with year ranges do not apply to every model year; verify by VIN.
FREQUENTLY ASKED QUESTIONS
FAQ
Can you program GMC Sierra 2500HD (2020-2026) modules?
Yes. Core Auto Logic supports generation-scoped module programming for the GMC Sierra 2500HD (2020-2026). The merged generation data includes ECU/PCM, BCM, TCU/TCM, ABS/EBCM, and SRS coverage. Rows marked with a year range apply only to that part of the span; unmarked rows are present across the merged generation data.
Which modules are documented for GMC Sierra 2500HD (2020-2026)?
The GMC Sierra 2500HD (2020-2026) generation currently shows 52 core module records across ECU/PCM, BCM, TCU/TCM, ABS/EBCM, and SRS groups. SRS modules include Sensing & Diagnostic Module (SDM) (2020-2023), Sensing & Diagnostic Module (SDM) (2022-2023), and Sensing & Diagnostic Module (SDM) (2024-2026). Part numbers and module variants must be confirmed for your exact year/VIN. Reference part number: 13524234 (2020-2023) - confirm for your exact year/VIN.
Does GMC Sierra 2500HD (2020-2026) need ADAS calibration after glass or collision work?
The merged generation data documents 28 ADAS systems, including Forward Camera (Monocular) (2020), Forward Radar (77GHz) (2020), Blind Spot Monitor Sensor - Left (BSM) (2020), Blind Spot Monitor Sensor - Right (BSM) (2020), and HD Surround Vision Camera System (4-camera, if equipped) (2020). Calibration triggers include Windshield Replacement (2020), Front Bumper Repair or Replacement (2020), Rear Bumper Repair or Replacement (2020), and DPF / DEF System Service (Diesel L5P) (2020). Procedure type is VIN-specific scan-tool procedure; verify exact requirements by VIN before setup.
Can you reset the airbag module on GMC Sierra 2500HD (2020-2026)?
Yes. The generation data includes 9 SRS records, including Sensing & Diagnostic Module (SDM) (2020-2023), Sensing & Diagnostic Module (SDM) (2022-2023), and Sensing & Diagnostic Module (SDM) (2024-2026). Bench reset, cloning, and replacement setup are handled after part-number review. Any SRS part number shown for this generation is planning data only - confirm for your exact year/VIN. Reference part number: 13524234 (2020-2023) - confirm for your exact year/VIN.
Do all GMC Sierra 2500HD (2020-2026) years use the same parts?
No assumption should be made across the full span. The generation page merges rows across 2020-2026; any row that does not span all data-bearing years is printed with its year range or treated as varies by year - verify by VIN. Part numbers always require exact year/VIN confirmation before ordering, cloning, or programming.
How long does service take for GMC Sierra 2500HD (2020-2026)?
Most programming, cloning, SRS, and calibration jobs are quoted after VIN, DTC, part number, and repair-scope review. Labor time varies by year - verify by VIN before scheduling. Mail-in module service is available nationwide. Exact service eligibility is confirmed from the year, VIN, module, and requested scope.
Is GMC Sierra 2500HD (2020-2026) service mobile or mail-in?
Mobile service covers DFW on-vehicle diagnostics, post-repair coding, and supported module work. Mail-in module service is available nationwide. We confirm the active path for your exact year, VIN, module, and requested scope before service.
More Sierra 2500HD generations
GMT800 HD 2001-2006 2nd Gen GMT900 2007-2014 3rd Gen K2XX 2015-2019 4th Gen T1XX 2020-2026 You are here
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GM Techline Connect Core Auto Logic has full GM Techline Connect access for Chevrolet, GMC, Buick and Cadillac vehicles. We confirm the supported procedure for your vehicle. Module programming & recovery Replacing a module or dealing with a failed programming attempt? Send the part numbers and fault scan for review. Onsite tools & equipment Bring in a technician or ask about hourly, daily and weekly rentals where licensing and equipment availability allow.