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4th Gen T1XX - 2020-2026 generation coverage
2020-2026 Chevrolet Silverado 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
110 documented Chevrolet Silverado 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 / engine control module - Silverado HD gas or diesel powertrain modules 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
- VERIFY EXACT SILVERADO 2500HD ECM, GDS2 WORKFLOW
- Protocol / method
- GM Techline Connect/SPS by VIN
- Cloning supported
- Conditional
- Chip / MCU
- Verify by VIN
- Notes
- Verify exact engine, emissions, security, and module hardware by VIN. Replacement can require SPS programming, VIN learn, security parameter setup, throttle or idle learn, fuel/emissions setup, and post-repair DTC checks.
TCM / transmission control module - if equipped separately 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
- VERIFY EXACT SILVERADO 2500HD TCM, GDS2 WORKFLOW
- Protocol / method
- GM Techline Connect/SPS and GDS2 setup by VIN
- Cloning supported
- Conditional
- Chip / MCU
- Verify by VIN
- Notes
- Transmission-control architecture and quick-learn procedures vary by build. Verify exact TCM, adaptive reset, and setup requirements by VIN.
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 Chevrolet Silverado 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 Silverado 2500 HD Buyers Guide year/engine branch. The 2020-2021 branch does not print an RPO; no RPO is assigned here. No ECU family, 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, Silverado 1500/3500, Sierra, other model or other year application is included. No relationship to previously held GM HD module numbers is established; all prior selection holds remain.
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 Chevrolet Silverado 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 Silverado 2500 HD Buyers Guide year/engine branch. The 2020-2021 branch does not print an RPO; no RPO is assigned here. No ECU family, 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, Silverado 1500/3500, Sierra, other model or other year application is included. No relationship to previously held GM HD module numbers is established; all prior selection holds remain.
ECM - L8T 6.6L V8 Gas 2 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.
- Notes
- SPS + VIN + PASS-Key transfer + idle/throttle relearn. Traditional pushrod V8 - no AFM/DFM. Exact part number for this entry remains unverified.
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
- 12710 (APPROX)
- Notes
- SPS + VIN + PASS-Key + idle relearn.
ECM - L5P 6.6L Duramax Diesel 3 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.
- Notes
- SPS + VIN + PASS-Key + DPF adaptation reset + injector trim codes + DEF system initialization. !!See general_notes DEF WARNING.!! Exact part number for this entry remains unverified.
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
- 12714 (APPROX)
- Notes
- SPS + VIN + PASS-Key + DPF adaptation reset + injector trim + DEF initialization via GDS2. !!See general_notes DEF WARNING.!!
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
- 12714 (APPROX)
- Notes
- SPS + VIN + PASS-Key + DPF adaptation reset + injector trim + DEF system initialization. !!See DEF WARNING in general_notes.!!
DEF ECU (L5P - SCR system) Verify by VIN 2021 1 record
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.
- Notes
- !!CRITICAL!!: GDS2 DEF initialization after DEF ECU or any DEF/SCR component replacement. Failure = derate. ISO 22241 fluid only. Exact part number for this entry remains unverified.
TCM - Allison 10L1000 (diesel) 3 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.
- Notes
- Allison DOC or TIS2WEB Allison path. Quick learn. Allison TES 295/668 fluid only. Exact part number for this entry remains unverified.
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.
- Notes
- Allison DOC or TIS2WEB. Quick learn. TES 295/668 fluid.
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.
- Notes
- Allison DOC or TIS2WEB. Quick learn. TES 295/668.
TCM - 6L90 (Gas) 2 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.
- Notes
- GDS2 quick learn. Verify shift quality. Exact part number for this entry remains unverified.
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
- 24285
- Notes
- GDS2 quick learn.
EBCM (HD) 3 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.
- Notes
- GDS2 ABS init + 4-wheel bleed + SAS zero-point. Critical at HD GVWR. Exact part number for this entry remains unverified.
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 HD
- Notes
- GDS2 init + pressure bleed + SAS zero-point. HD GVWR - critical.
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 HD
- Notes
- GDS2 init + pressure bleed + SAS zero-point.
Engine / powertrain control module Verify by VIN 2021 1 record
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
- 12725133
- Notes
- Parts reference for 2021 Chevrolet Silverado 2500 HD 4WD 6.6L gasoline V8. Application: 6.6L gasoline engine, not Duramax diesel. Match VIN, build date, equipment and the full module label before selecting a replacement. This reference does not establish interchange, cloning or unlock support.
DEF ECU (L5P) 2 records
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.
- Notes
- !!CRITICAL!!: GDS2 DEF init after replacement or any DEF/SCR component service. ISO 22241 fluid only.
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.
- Notes
- !!CRITICAL!!: GDS2 DEF init after any DEF/SCR component service. ISO 22241 fluid only. Contamination = SCR destruction.
ECM - L8T 6.6L V8 Gas (401HP) Verify by VIN 2024-2026 1 record
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
- 12710 (APPROX - VERIFY 2024 GMDB)
- Notes
- SPS programming via TIS2WEB. VIN tie. PASS-Key III+ parameter transfer. Idle/throttle relearn via GDS2. No AFM/DFM on L8T.
ECM - L5P 6.6L Duramax Diesel (445HP) Verify by VIN 2024-2026 1 record
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
- 12714 (APPROX - VERIFY 2024 GMDB)
- Notes
- SPS via TIS2WEB. VIN + PASS-Key transfer. !!DIESEL CRITICAL!!: DPF adaptation reset required. Injector return flow / trim code programming via GDS2. Glow plug module check. DEF system initialization via GDS2 after ECM replacement. Extended SPS programming time. See DEF WARNING in general_notes.
DEF ECU - SCR Control Unit (L5P only) Verify by VIN 2024-2026 1 record
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
- OEM GM DURAMAX (VERIFY 2024 GMDB BY VIN)
- Notes
- !!SAFETY-CRITICAL!!: GDS2 DEF system initialization MANDATORY after DEF ECU replacement or any service to: DEF pump, DEF injector, DEF tank level sensor, NOx sensor upstream, NOx sensor downstream, SCR catalyst. Failure to initialize = engine derate condition (speed/power limited). Verify DEF fluid is ISO 22241 certified before completing service. Using wrong fluid or contaminated DEF = SCR catalyst destruction = major repair ($3,000-$8,000+ catalyst replacement).
TCM - Allison 10L1000 (L5P diesel only) Verify by VIN 2024-2026 1 record
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
- OEM ALLISON (VERIFY 2024 GMDB)
- Notes
- Allison DOC software or TIS2WEB Allison programming path. Allison quick learn procedure. Use ONLY Allison TES 295 or TES 668 approved fluid - standard Dexron is NOT approved for 10L1000. Verify shift quality through full range post-replacement.
TCM - 6L90 6-Speed (L8T gas only) Verify by VIN 2024-2026 1 record
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
- 24285 (APPROX - VERIFY 2024 GMDB)
- Notes
- GDS2 TCM quick learn. Adaptive shift reset. Verify smooth shift quality.
EBCM (HD - 2024) Verify by VIN 2024-2026 1 record
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 HD (CONTINENTAL, DELPHI - VERIFY 2024 GMDB)
- Notes
- HD-specific EBCM - not interchangeable with 1500. GDS2 ABS/StabiliTrak initialization + 4-wheel pressure brake bleed + SAS zero-point calibration mandatory. At 10,000+ lbs GVWR this is a critical safety procedure. Drive straight 35+ mph post-calibration before any towing.
TCM / Transmission
TCU - 6L90 6-Speed Auto 3 records
J2534
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 24282573 - requires cloning
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- 24282573
- Protocol / method
- J2534
- Coding required
- Yes
- Cloning supported
- Yes
- Chip / MCU
- Continental MPC5675K
- Notes
- Requires GM SPS2 programming, transmission adaptation learn via Tech2/MDI, Dexron VI ATF, VIN coding mandatory
J2534
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 24282605 - requires cloning
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- 24282605
- Protocol / method
- J2534
- Coding required
- Yes
- Cloning supported
- Yes
- Chip / MCU
- Continental MPC5674F
- Notes
- Requires VIN coding, transmission adaptive learn procedure, use DEXRON VI ATF, SPS programming required
J2534
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 24258 - requires cloning
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- 24258
- Protocol / method
- J2534
- Coding required
- Yes
- Cloning supported
- Yes
- Chip / MCU
- Bosch TC1797
- Notes
- Legacy option, requires SPS programming, transmission adaptation procedure via GDS2, Dexron VI specification
TCU - 10L90 10-Speed Auto 3 records
J2534
Documented for 2020-2021 within this generation. Confirm the exact vehicle by VIN.
Coverage and replacement notes
Documented years: 2020, 2021
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- 84632141
- Protocol / method
- J2534
- Coding required
- Yes
- Cloning supported
- No
- Chip / MCU
- Continental TC1797
- Notes
- GM ACDelco TDS programming required, extensive clutch adaptation learn cycles, Mobil 1 Syn LV ATF HP required, security linked to BCM
J2534
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 24282773 - requires cloning
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- 24282773
- Protocol / method
- J2534
- Coding required
- Yes
- Cloning supported
- Yes
- Chip / MCU
- Continental MPC5777M
- Notes
- Requires VIN coding, transmission adaptive learn procedure, use DEXRON VI ATF, SPS programming required, extended relearn drive cycle
J2534
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 84632 - requires cloning
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- 84632
- Protocol / method
- J2534
- Coding required
- Yes
- Cloning supported
- Yes
- Chip / MCU
- Continental TC297
- Notes
- Requires VIN programming, TCM relearn via Tech2Win or GDS2, Dexron VI ATF, shift adaptation reset required
TCU - Allison 1000 6-Speed Auto Verify by VIN 2022-2023 1 record
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
- 29545962
- Protocol / method
- J2534
- Coding required
- Yes
- Cloning supported
- No
- Chip / MCU
- Allison Proprietary Controller
- Notes
- Allison proprietary system, requires Allison DOC software for programming, use TranSynd ATF, extensive relearn required
TCU - 10L1000 10-Speed Auto Verify by VIN 2026 1 record
Documented for 2026 within this generation. Confirm the exact vehicle by VIN.
Coverage and replacement notes
Documented years: 2026
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- 84632
- Protocol / method
- J2534
- Coding required
- Yes
- Cloning supported
- No
- Chip / MCU
- Continental TC1797
- Notes
- VIN coding required, CAN gateway programming, TCM relearn via Tech2Win, Dexron VI ATF
TCU - 6L90E 6-Speed Auto Verify by VIN 2026 1 record
Documented for 2026 within this generation. Confirm the exact vehicle by VIN.
Coverage and replacement notes
Documented years: 2026
Donor must match part family 24283 - requires cloning
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- 24283
- Protocol / method
- OBD
- Coding required
- Yes
- Cloning supported
- Yes
- Chip / MCU
- Bosch TC1797
- Notes
- TAP shift adaptive learning, GM MDI required, Dexron VI specification
BCM / Body electronics
BCM / body control module - VIN-specific 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
Donor must match part family VERIFY EXACT SILVERADO 2500HD BCM; VIN-locked
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- VERIFY EXACT SILVERADO 2500HD BCM, GDS2 WORKFLOW
- Security
- GM immobilizer/key security varies by build
- Coding required
- Yes
- Notes
- Verify exact BCM, RKE/passive-entry, trailer, lighting, theft, and body-option content by VIN. Replacement can require Techline Connect/SPS programming, GDS2 setup, option configuration, and key/security relearn.
BCM (HD) 3 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.
- Notes
- SPS + VIN + all options (trailer brake type/weight, snowplow prep RPO VYU/V76 if equipped, BSM, remote start) + PASS-Key relearn all keys. Exact part number for this entry remains unverified.
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
- 84252 HD (VERIFY 2022 GMDB)
- Notes
- SPS + VIN + all options (trailer brake, snowplow RPO if equipped, BSM, remote start) + PASS-Key relearn all keys.
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
- 84252 HD (VERIFY 2023 SUFFIX)
- Notes
- SPS + VIN + trailer brake type/weight + Rear Ped Alert if equipped + snowplow RPO if equipped + BSM + PASS-Key all keys.
Integrated Trailer Brake Controller 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.
- Notes
- GDS2 config - trailer type and weight class. Safety-critical at HD GVWR. IOR gain adjustment. Exact part number for this entry remains unverified.
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.
- Notes
- GDS2 config - type + weight class. Safety-critical at HD GVWR. IOR gain.
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.
- Notes
- GDS2 config. Safety-critical. IOR gain.
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.
- Notes
- !!MANDATORY GDS2 configuration before any towing!!: Set trailer brake type (electric vs. electric-over-hydraulic) and weight class. IOR gain adjustment. Safety-critical at 10,000+ lbs GVWR - improper config = unsafe braking.
HVAC Module 3 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.
- Notes
- GDS2 actuator calibration. Exact part number for this entry remains unverified.
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
- 84 HD
- Notes
- GDS2 actuator cal.
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 HD (VERIFY 2024)
- Notes
- GDS2 HVAC actuator calibration after replacement.
Body control module Verify by VIN 2021 1 record
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
- 13531840
- Notes
- Parts reference for 2021 Chevrolet Silverado 2500 HD 4WD 6.6L gasoline V8. Application: 6.6L gasoline configuration; match equipment and original label. Match VIN, build date, equipment and the full module label before selecting a replacement. This reference does not establish interchange, cloning or unlock support.
BCM (HD - 2024) Verify by VIN 2024-2026 1 record
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
- 84252 HD (VERIFY 2024 GMDB SUFFIX)
- Notes
- SPS programming via TIS2WEB. Configure: integrated trailer brake type/weight class, snowplow prep RPO VYU/V76 if equipped, BSM, remote start, Rear Ped Alert, surround vision. VIN programming required.
SRS / Airbag
Sensing & Diagnostic Module (SDM) 11 records
Under center console
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.
- Part number
- 84750512
- 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
- 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.
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
- 13518546
- 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
EBCM (HD-specific) 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
- 84 HD (VERIFY GMDB - DO NOT SUBSTITUTE 1500 PART)
- Notes
- GDS2 ABS/ESC init. 4-wheel brake bleed - pressure bleed preferred given HD brake system volume. SAS zero-point calibration: GDS2 reset + drive straight 35+ mph. Especially critical on HD at GVWR 10,000+ lbs - improper SAS = unstable braking under load.
Wheel Speed Sensor - Front (each) 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
- 13512 HD VARIANT
- Notes
- Active magnetic. Torque to spec. GDS2 DTC clear + road test 15+ mph.
Wheel Speed Sensor - Rear (each) 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
- 13512 HD REAR VARIANT
- Notes
- Rear axle (Dana/AAM HD axle). Same procedure as front.
Brake Pressure Modulator (HCU - HD) 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.
- Notes
- GDS2 automated bleed sequence. HD brake system has higher fluid volume - ensure full bleed. Firm pedal required before any towing or GVWR-rated load.
EBCM (HD) 3 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
- 84 HD (VERIFY - NOT INTERCHANGEABLE WITH 1500)
- Notes
- GDS2 ABS/ESC init. Pressure bleed preferred. SAS zero-point mandatory - 35+ mph straight. Verify at operating load.
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 HD
- Notes
- GDS2 ABS/ESC init. Pressure bleed. SAS zero-point 35+ mph.
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 HD
- Notes
- Pressure bleed + SAS zero-point 35+ mph. HD GVWR - critical.
Wheel Speed Sensor (each corner) Verify by VIN 2021 1 record
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
- 13512 HD VARIANT
- Notes
- Torque spec. GDS2 DTC clear. Road test 15+ mph.
HCU (HD) 3 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.
- Notes
- GDS2 auto bleed. Higher fluid volume - ensure full bleed.
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.
- Notes
- GDS2 auto bleed. Full bleed required.
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.
- Notes
- GDS2 auto bleed. Full volume bleed.
Wheel Speed Sensors (all four) 2 records
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
- 13512 HD VARIANT
- Notes
- Torque. Road test 15+ mph.
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
- 13512 HD
- Notes
- Torque. Road test.
EBCM (HD - 2024) Verify by VIN 2024-2026 1 record
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 HD (VERIFY 2024 GMDB - DO NOT SUBSTITUTE 1500 PART)
- Notes
- GDS2 ABS/ESC initialization. Pressure bleed preferred - HD brake system has higher fluid volume. SAS zero-point: GDS2 reset + drive straight 35+ mph on level surface. StabiliTrak and Tow/Haul braking limited until SAS learning completes. Do not tow at GVWR until SAS calibration is verified.
Wheel Speed Sensor - Front Left Verify by VIN 2024-2026 1 record
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
- 13512 HD VARIANT
- Notes
- Active magnetic. Torque to spec. GDS2 DTC clear + road test 15+ mph.
Wheel Speed Sensor - Front Right Verify by VIN 2024-2026 1 record
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
- 13512 HD VARIANT
- Notes
- Same procedure.
Wheel Speed Sensor - Rear Left Verify by VIN 2024-2026 1 record
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
- 13512 HD REAR (AAM
- Notes
- HD rear axle. Torque to spec. Road test verify.
Wheel Speed Sensor - Rear Right Verify by VIN 2024-2026 1 record
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
- 13512 HD REAR
- Notes
- Same procedure.
Brake Pressure Modulator / HCU (HD) Verify by VIN 2024-2026 1 record
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.
- Notes
- GDS2 automated bleed sequence. HD brake system volume is higher - ensure complete bleed. Verify firm pedal before any towing or rated-GVWR operation.
Other modules
Instrument Panel Cluster (IPC) 10 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 2020-2022 within this generation. Confirm the exact vehicle by VIN.
Coverage and replacement notes
Documented years: 2020, 2021, 2022
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 2023 within this generation. Confirm the exact vehicle by VIN.
Coverage and replacement notes
Documented years: 2023
Donor must match part family 85031034 - requires cloning
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- 85031034
- 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 within this generation. Confirm the exact vehicle by VIN.
Coverage and replacement notes
Documented years: 2024
Donor must match part family 85012310 - requires cloning
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- 85012310
- 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 20 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.
- Notes
- !!IMPORTANT!!: Must be configured via GDS2 for trailer type (electric brake vs. electric-over-hydraulic) and weight class. User gain adjustable via IOR. After BCM replacement, reconfigure trailer brake parameters before any towing. Improper configuration at GVWR 10,000+ lbs is a safety hazard.
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.
- Notes
- GDS2 OnStar init. VIN-tied modem. Active subscription for remote features.
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
- RPO UF8, AP9
- Notes
- GDS2 BCM enable. Verify after BCM replacement.
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.
- Notes
- No module calibration - structural/wiring prep. Trailer brake configuration via GDS2 still required.
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.
- Notes
- Snowplow prep changes engine idle, cooling fan, and alternator parameters. BCM configuration must include snowplow prep RPO after replacement.
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.
- Notes
- GDS2 config mandatory before towing. Type + weight class. Safety-critical at 10,000+ lbs GVWR.
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.
- Notes
- GDS2 init. VIN-tied.
Documented for 2021, 2023 within this generation. Confirm the exact vehicle by VIN.
Coverage and replacement notes
Documented years: 2021, 2023
Year coverage is not proof of interchangeability. Confirm the full part number and vehicle configuration before buying a used module.
- Part number
- RPO UF8, AP9
- Notes
- BCM GDS2 enable.
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.
- Notes
- BCM must include snowplow RPO after replacement. Affects idle, fan, alternator.
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.
- Notes
- GDS2 config before towing. Safety-critical.
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.
- Notes
- GDS2 init.
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
- RPO UF8, AP9
- Notes
- BCM GDS2.
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.
- Notes
- BCM must include RPO 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.
- Notes
- GDS2 config mandatory. Type + weight. Safety-critical.
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.
- Notes
- Include RPO in BCM config after replacement.
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.
- Notes
- !!GDS2 configuration MANDATORY before towing!!: trailer type (electric brakes or electric-over-hydraulic), weight class, gain setting via IOR. At GVWR 10,000+ lbs, improper trailer brake config is a safety-critical failure risk - jackknife or loss of braking.
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.
- Notes
- GDS2 init. VIN-tied modem. Active subscription for remote features and diagnostics.
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
- RPO UF8, AP9
- Notes
- GDS2 BCM configuration. Verify after BCM replacement.
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.
- Notes
- After BCM replacement, snowplow prep RPO must be re-entered in BCM configuration. Affects engine idle speed, cooling fan engagement, alternator output. Verify snowplow operation if equipped.
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.
- Notes
- No module calibration - structural and wiring prep. Trailer brake controller GDS2 config still required before use.
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
- Chevrolet Silverado 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 (11 documented rows)
- Read codes on ECU systems (27 documented rows)
- Read codes on BCM systems (13 documented rows)
- Read codes on TCU / TCM systems (9 documented rows)
- Read codes on ABS systems (19 documented rows)
- Read codes on IPC / SAS systems (11 documented rows)
- Read codes on Keys systems (5 documented rows)
- Read codes on Immobilizer systems (11 documented rows)
- Read codes on Accessory systems (20 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 + MS-CAN), Ethernet select modules; HD powertrain CAN; OBD2 DLC 500kbps HS-CAN with ISO 15765-4 CAN (500 kbps HS-CAN).
- CAN
- GMLAN (HS-CAN + MS-CAN), Ethernet select modules; HD powertrain CAN; OBD2 DLC 500kbps HS-CAN
- OBD
- ISO 15765-4 CAN (500 kbps HS-CAN)
CAN architecture varies by year
OPENPILOT / COMMA.AI
Openpilot Compatibility
Not Supported
Not supported - silverado-2500hd not in openpilot support tree
Not in openpilot support tree as of April 2026.
Generation service summary for Chevrolet Silverado 2500HD 4th Gen T1XX (2020-2026)
Generation coverage
This page consolidates Chevrolet Silverado 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 22 system records, including Forward camera / collision or lane camera - if equipped (2020), Forward radar / adaptive cruise radar - if equipped (2020), Rear blind-zone, parking, rear camera, or surround-view sensors - if equipped (2020), and Forward Camera (Monocular) (2021). Year-marked systems apply only to the shown range.
View ADAS dataCalibration triggers
This generation has 52 merged calibration trigger records. Trigger applicability can vary by year - verify by VIN before setup.
View triggersProgrammable modules
The merged generation page indexes 110 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 Chevrolet Silverado 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 (Forward Camera Equipped) 2
2020
HD-specific forward camera static cal via GDS2. Use HD WSM calibration procedure - chassis height differs from 1500. Level surface, forward target per HD WSM.
2024-2026
GDS2 HD camera static calibration. HD chassis height - use HD WSM procedure, NOT light-duty 1500 procedure. Level surface, target chart at HD-specified distance and height.
Forward Camera Replacement (HD) 3
2020
GDS2 init + static cal using HD procedure. Inspect bracket. Confirm FCA/AEB.
2021
GDS2 init + HD static cal.
2024-2026
GDS2 HD initialization + static calibration. Inspect bracket. Confirm FCA and AEB operational.
Forward Radar Replacement (HD) 3
2020
GDS2 HD radar alignment. Different calibration height than 1500. Level, 10 ft clear. Remove fascia before confirming.
2021
GDS2 HD alignment. Fascia off. No 1500 calibration values.
2024-2026
GDS2 HD radar alignment. Level surface, 10 ft front clearance. Remove fascia before confirming alignment. HD calibration values only.
BCM Replacement 5
2020
SPS + VIN + all options (trailer brake type/weight, snowplow RPO if equipped, BSM, remote start, camera options) + PASS-Key relearn all keys.
2021
SPS + VIN + all options + trailer brake config + snowplow RPO if equipped + PASS-Key all keys.
2022
SPS + VIN + trailer brake config + all options + PASS-Key all keys.
2023
SPS + VIN + trailer brake + all RPOs + PASS-Key all keys.
2024-2026
SPS + VIN + trailer brake type/weight + snowplow RPO (if equipped) + all options (BSM, remote start, Rear Ped Alert, surround vision) + PASS-Key III+ relearn ALL customer keys.
ECM Replacement - L8T Gas 2
2020
SPS + VIN + PASS-Key transfer + idle/throttle relearn.
2024-2026
SPS via TIS2WEB + VIN + PASS-Key parameter transfer + idle/throttle relearn.
ECM Replacement - L5P Duramax Diesel 2
2020
SPS + VIN + PASS-Key transfer + DPF adaptation reset + injector trim codes + DEF system initialization via GDS2. Extended SPS time required.
2024-2026
SPS via TIS2WEB + VIN + PASS-Key + DPF adaptation reset + injector trim codes via GDS2 + DEF system initialization. Extended programming time. Do not return vehicle with active aftertreatment DTCs.
DEF System Component Service (L5P) 1
2020
!!MANDATORY!!: GDS2 DEF system initialization after any DEF pump, DEF injector, DEF tank, NOx sensor, or SCR catalyst service. Failure to initialize = engine derate. Verify DEF fluid quality (ISO 22241) before completing service.
EBCM Replacement (HD) 2
2020
GDS2 ABS/ESC init + full 4-wheel brake bleed + SAS zero-point. Critical at HD GVWR 10,000+ lbs - must verify at operating load.
2024-2026
GDS2 ABS/ESC initialization + 4-wheel pressure brake bleed + SAS zero-point calibration. Drive straight 35+ mph on level surface before any towing or GVWR-rated load.
Wheel Alignment / Suspension Work 5
2020
SAS zero-point calibration via GDS2 after ANY suspension height change. Drive straight 35+ mph. At HD GVWR this is a critical safety procedure - incorrect SAS affects towing stability and trailer brake assist.
2021
GDS2 SAS reset. Drive 35+ mph straight. Critical for towing stability at HD GVWR.
2022
SAS reset. Drive 35+ mph. Critical for HD towing stability.
2023
SAS reset. HD towing stability critical.
2024-2026
SAS zero-point calibration via GDS2 mandatory after any suspension height change. Drive 35+ mph straight. At 10,000+ lbs GVWR, incorrect SAS directly compromises towing stability and trailer brake assist effectiveness.
Allison 10L1000 TCM Replacement (diesel) 1
2020
GDS2 + Allison DOC or TIS2WEB Allison path. Allison quick learn. Verify Allison TES 295/668 fluid - do not use standard Dexron.
Trailer Brake Controller Configuration 1
2020
GDS2 required - configure trailer brake type and weight class before any towing. User gain adjustment via IOR. Safety-critical at HD payload ratings.
Any Front-End Collision 1
2020-2026
Yes
Inspect and recalibrate forward camera after any front-end collision using GDS2/MDI2.
Front Bumper Repair or Replacement 1
2020-2026
Yes
Forward radar angular alignment required after front bumper R&R. Use GDS2/MDI2.
Rear Bumper Repair or Replacement 1
2020-2026
Yes
BSD radar alignment required after rear bumper R&R. Use 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.
Windshield Replacement (Camera Equipped) 3
2021
HD WSM forward camera static cal via GDS2. HD chassis height offset - not same as 1500.
2022
GDS2 HD camera static cal. HD chassis height procedure.
2023
GDS2 HD camera static cal procedure.
ECM - L8T Replacement 1
2021
SPS + VIN + PASS-Key + idle relearn.
ECM - L5P Replacement 1
2021
SPS + VIN + PASS-Key + DPF adaptation reset + injector trim + DEF initialization.
DEF System Service (L5P) 1
2021
!!MANDATORY!!: GDS2 DEF init after any DEF/SCR component. Failure = derate. Verify ISO 22241 fluid quality.
EBCM Replacement 3
2021
ABS init + pressure bleed + SAS zero-point (35+ mph). HD GVWR - safety critical.
2022
ABS init + pressure bleed + SAS zero-point.
2023
ABS init + pressure bleed + SAS zero-point (35+ mph).
Allison TCM Replacement 2
2021
Allison DOC or TIS2WEB Allison path. Quick learn. TES 295/668 fluid verify.
2023
Allison DOC or TIS2WEB. Quick learn. TES 295/668 fluid.
Forward Camera Replacement 2
2022
GDS2 HD init + cal.
2023
GDS2 HD init + static cal.
Forward Radar Replacement 1
2022-2023
GDS2 HD alignment. Fascia off.
ECM L5P Replacement 1
2022-2023
SPS + DPF reset + injector trim + DEF init.
DEF System Service 2
2022
!!GDS2 DEF init mandatory!!. ISO 22241 fluid verify.
2023
!!GDS2 DEF init mandatory - no exceptions!!. Verify ISO 22241 fluid quality.
DEF System Component Service - L5P (ANY component) 1
2024-2026
!!MANDATORY - NO EXCEPTIONS!!: GDS2 DEF system initialization required after service to DEF pump, DEF injector, DEF tank, NOx sensor (either), or SCR catalyst. Failure = engine derate. Verify ISO 22241 DEF fluid quality before completing service. Contaminated DEF requires immediate correction - do not allow customer to drive with contaminated DEF.
Allison 10L1000 TCM Replacement (L5P diesel) 1
2024-2026
Allison DOC or TIS2WEB Allison programming path. Allison quick learn procedure. Verify Allison TES 295 or TES 668 approved fluid is in use - do NOT use standard Dexron in 10L1000.
Trailer Brake Controller Configuration (after BCM R&R or new trailer) 1
2024-2026
GDS2 mandatory configuration: trailer brake type and weight class. IOR gain adjustment. Verify operation with connected trailer before releasing vehicle. Safety-critical at HD GVWR.
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: 1G1 (Chevy car), 1GC (Chevy truck), 3GN (Chevy SUV). Position 8 = engine code. Position 10 = model year code. | Chevrolet 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: 1G1 (Chevy car), 1GC (Chevy truck), 3GN (Chevy SUV). Position 8 = engine code. Position 10 = model year code. | Chevrolet 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: 1G1 (Chevy car), 1GC (Chevy truck), 3GN (Chevy SUV). Position 8 = engine code. Position 10 = model year code. | Chevrolet 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: 1G1 (Chevy car), 1GC (Chevy truck), 3GN (Chevy SUV). Position 8 = engine code. Position 10 = model year code. | Chevrolet 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: 1G1 (Chevy car), 1GC (Chevy truck), 3GN (Chevy SUV). Position 8 = engine code. Position 10 = model year code. | Chevrolet 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: 1G1 (Chevy car), 1GC (Chevy truck), 3GN (Chevy SUV). Position 8 = engine code. Position 10 = model year code. | Chevrolet 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: 1G1 (Chevy car), 1GC (Chevy truck), 3GN (Chevy SUV). Position 8 = engine code. Position 10 = model year code. | Chevrolet 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.
2020
- Infotainment: Chevrolet Infotainment 3 (was Chevrolet Infotainment 3 Premium)
2021
- Infotainment: Chevrolet Infotainment 3 (was Chevrolet Infotainment 3 Premium)
2022
- Infotainment: Chevrolet Infotainment 3 (was Chevrolet Infotainment 3 Premium)
22 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
Available: Forward Camera Safety Package, Adaptive Cruise w/Trailer Brake Assist, Rear Camera, Blind Zone Alert, HD Surround Vision, Rear Pedestrian Alert, Lane Change Alert w/Blind Spot Monitoring
Scroll for part numbers and Details
| System | Type | Category | Cal. Type | Supported | Part # | Actions |
|---|---|---|---|---|---|---|
| Forward camera / collision or lane camera - if equipped 2020 | Forward Camera | - | Static or dynamic per GM service information | Conditional | VERIFY EXACT SILVERADO 2500HD FORWARD CAMERA PART NUMBERS BY VIN IN GM SERVICE INFORMATION, GDS2 WORKFLOW | |
| Forward radar / adaptive cruise radar - if equipped 2020 | Radar | - | Static or dynamic per GM service information | Conditional | VERIFY EXACT SILVERADO 2500HD FORWARD RADAR PART NUMBERS BY VIN IN GM SERVICE INFORMATION, GDS2 WORKFLOW | |
| Rear blind-zone, parking, rear camera, or surround-view sensors - if equipped 2020 | Parking / blind-zone / camera | - | Setup or calibration per GM service information | Conditional | VERIFY EXACT SILVERADO 2500HD PARKING, GDS2 WORKFLOW | |
| Forward Camera (Monocular) 2021 | Camera | ADAS | Static | YES | 84394 HD VARIANT (APPROX) | |
| Forward Radar (77GHz) 2021 | Radar | ADAS | Static + Dynamic | YES | 84277 HD VARIANT (APPROX) | |
| Blind Spot Monitor Sensor - Left (BSM) 2021-2023 | Radar | ADAS | Static + Dynamic | YES | 23234 HD | |
| Blind Spot Monitor Sensor - Right (BSM) 2021-2023 | Radar | ADAS | Static + Dynamic | YES | 23234 HD | |
| HD Surround Vision (if equipped) 2021 | Camera | ADAS | Static | YES | - | |
| HD Rear Camera 2021-2023 | Camera | ADAS | Static | YES | - | |
| Forward Camera (Monocular) 2022 | Camera | ADAS | Static | YES | 84394 HD (APPROX) | |
| Forward Radar (77GHz) 2022-2023 | Radar | ADAS | Static + Dynamic | YES | 84277 HD (APPROX) | |
| HD Surround Vision 2022-2023 | Camera | ADAS | Static | YES | - | |
| Forward Camera (Monocular) 2023 | Camera | ADAS | Static | YES | 84394 HD (APPROX - VERIFY 2023 GMDB) | |
| Rear Pedestrian Alert (2023) 2023 | Radar | ADAS | Static | YES | - | |
| Forward Camera (Monocular) 2024-2026 | Camera | ADAS | Static | YES | 84394 HD (APPROX - VERIFY 2024 GMDB) | |
| Forward Radar (77GHz) 2024-2026 | Radar | ADAS | Static + Dynamic | YES | 84277 HD (APPROX - VERIFY 2024 GMDB) | |
| Blind Spot Monitor Sensor - Left (BSM) 2024-2026 | Radar | ADAS | Static + Dynamic | YES | 23234 HD (APPROX) | |
| Blind Spot Monitor Sensor - Right (BSM) 2024-2026 | Radar | ADAS | Static + Dynamic | YES | 23234 HD | |
| HD Surround Vision (if equipped) 2024-2026 | Camera | ADAS | Static | YES | OEM GM HD (VERIFY 2024 GMDB) | |
| Rear Pedestrian Alert 2024-2026 | Radar | ADAS | Static | YES | - | |
| Adaptive Cruise w/Trailer Brake Assist 2024-2026 | Software | ADAS | None | YES | - | |
| HD Rear Camera 2024-2026 | Camera | ADAS | Static | YES | OEM GM HD (VERIFY 2024 PN) |
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 (Forward Camera Equipped) 2020
HD-specific forward camera static cal via GDS2. Use HD WSM calibration procedure - chassis height differs from 1500. Level surface, forward target per HD WSM.
Forward Camera Replacement (HD) 2020
GDS2 init + static cal using HD procedure. Inspect bracket. Confirm FCA/AEB.
Forward Radar Replacement (HD) 2020
GDS2 HD radar alignment. Different calibration height than 1500. Level, 10 ft clear. Remove fascia before confirming.
BCM Replacement 2020
SPS + VIN + all options (trailer brake type/weight, snowplow RPO if equipped, BSM, remote start, camera options) + PASS-Key relearn all keys.
ECM Replacement - L8T Gas 2020
SPS + VIN + PASS-Key transfer + idle/throttle relearn.
ECM Replacement - L5P Duramax Diesel 2020
SPS + VIN + PASS-Key transfer + DPF adaptation reset + injector trim codes + DEF system initialization via GDS2. Extended SPS time required.
DEF System Component Service (L5P) 2020
!!MANDATORY!!: GDS2 DEF system initialization after any DEF pump, DEF injector, DEF tank, NOx sensor, or SCR catalyst service. Failure to initialize = engine derate. Verify DEF fluid quality (ISO 22241) before completing service.
EBCM Replacement (HD) 2020
GDS2 ABS/ESC init + full 4-wheel brake bleed + SAS zero-point. Critical at HD GVWR 10,000+ lbs - must verify at operating load.
Wheel Alignment / Suspension Work 2020
SAS zero-point calibration via GDS2 after ANY suspension height change. Drive straight 35+ mph. At HD GVWR this is a critical safety procedure - incorrect SAS affects towing stability and trailer brake assist.
Allison 10L1000 TCM Replacement (diesel) 2020
GDS2 + Allison DOC or TIS2WEB Allison path. Allison quick learn. Verify Allison TES 295/668 fluid - do not use standard Dexron.
Trailer Brake Controller Configuration 2020
GDS2 required - configure trailer brake type and weight class before any towing. User gain adjustment via IOR. Safety-critical at HD payload ratings.
Any Front-End Collision
Inspect and recalibrate forward camera after any front-end collision using GDS2/MDI2.
Front Bumper Repair or Replacement
Forward radar angular alignment required after front bumper R&R. Use GDS2/MDI2.
Rear Bumper Repair or Replacement
BSD radar alignment required after rear bumper R&R. Use 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 (Camera Equipped) 2021
HD WSM forward camera static cal via GDS2. HD chassis height offset - not same as 1500.
Forward Camera Replacement (HD) 2021
GDS2 init + HD static cal.
Forward Radar Replacement (HD) 2021
GDS2 HD alignment. Fascia off. No 1500 calibration values.
BCM Replacement 2021
SPS + VIN + all options + trailer brake config + snowplow RPO if equipped + PASS-Key all keys.
ECM - L8T Replacement 2021
SPS + VIN + PASS-Key + idle relearn.
ECM - L5P Replacement 2021
SPS + VIN + PASS-Key + DPF adaptation reset + injector trim + DEF initialization.
DEF System Service (L5P) 2021
!!MANDATORY!!: GDS2 DEF init after any DEF/SCR component. Failure = derate. Verify ISO 22241 fluid quality.
EBCM Replacement 2021
ABS init + pressure bleed + SAS zero-point (35+ mph). HD GVWR - safety critical.
Wheel Alignment / Suspension Work 2021
GDS2 SAS reset. Drive 35+ mph straight. Critical for towing stability at HD GVWR.
Allison TCM Replacement 2021
Allison DOC or TIS2WEB Allison path. Quick learn. TES 295/668 fluid verify.
Windshield Replacement (Camera Equipped) 2022
GDS2 HD camera static cal. HD chassis height procedure.
Forward Camera Replacement 2022
GDS2 HD init + cal.
Forward Radar Replacement 2022-2023
GDS2 HD alignment. Fascia off.
BCM Replacement 2022
SPS + VIN + trailer brake config + all options + PASS-Key all keys.
ECM L5P Replacement 2022-2023
SPS + DPF reset + injector trim + DEF init.
DEF System Service 2022
!!GDS2 DEF init mandatory!!. ISO 22241 fluid verify.
EBCM Replacement 2022
ABS init + pressure bleed + SAS zero-point.
Wheel Alignment / Suspension Work 2022
SAS reset. Drive 35+ mph. Critical for HD towing stability.
Windshield Replacement (Camera Equipped) 2023
GDS2 HD camera static cal procedure.
Forward Camera Replacement 2023
GDS2 HD init + static cal.
BCM Replacement 2023
SPS + VIN + trailer brake + all RPOs + PASS-Key all keys.
DEF System Service 2023
!!GDS2 DEF init mandatory - no exceptions!!. Verify ISO 22241 fluid quality.
EBCM Replacement 2023
ABS init + pressure bleed + SAS zero-point (35+ mph).
Wheel Alignment / Suspension Work 2023
SAS reset. HD towing stability critical.
Allison TCM Replacement 2023
Allison DOC or TIS2WEB. Quick learn. TES 295/668 fluid.
Windshield Replacement (Forward Camera Equipped) 2024-2026
GDS2 HD camera static calibration. HD chassis height - use HD WSM procedure, NOT light-duty 1500 procedure. Level surface, target chart at HD-specified distance and height.
Forward Camera Replacement (HD) 2024-2026
GDS2 HD initialization + static calibration. Inspect bracket. Confirm FCA and AEB operational.
Forward Radar Replacement (HD) 2024-2026
GDS2 HD radar alignment. Level surface, 10 ft front clearance. Remove fascia before confirming alignment. HD calibration values only.
BCM Replacement 2024-2026
SPS + VIN + trailer brake type/weight + snowplow RPO (if equipped) + all options (BSM, remote start, Rear Ped Alert, surround vision) + PASS-Key III+ relearn ALL customer keys.
ECM Replacement - L8T Gas 2024-2026
SPS via TIS2WEB + VIN + PASS-Key parameter transfer + idle/throttle relearn.
ECM Replacement - L5P Duramax Diesel 2024-2026
SPS via TIS2WEB + VIN + PASS-Key + DPF adaptation reset + injector trim codes via GDS2 + DEF system initialization. Extended programming time. Do not return vehicle with active aftertreatment DTCs.
DEF System Component Service - L5P (ANY component) 2024-2026
!!MANDATORY - NO EXCEPTIONS!!: GDS2 DEF system initialization required after service to DEF pump, DEF injector, DEF tank, NOx sensor (either), or SCR catalyst. Failure = engine derate. Verify ISO 22241 DEF fluid quality before completing service. Contaminated DEF requires immediate correction - do not allow customer to drive with contaminated DEF.
EBCM Replacement (HD) 2024-2026
GDS2 ABS/ESC initialization + 4-wheel pressure brake bleed + SAS zero-point calibration. Drive straight 35+ mph on level surface before any towing or GVWR-rated load.
Wheel Alignment / Suspension Work 2024-2026
SAS zero-point calibration via GDS2 mandatory after any suspension height change. Drive 35+ mph straight. At 10,000+ lbs GVWR, incorrect SAS directly compromises towing stability and trailer brake assist effectiveness.
Allison 10L1000 TCM Replacement (L5P diesel) 2024-2026
Allison DOC or TIS2WEB Allison programming path. Allison quick learn procedure. Verify Allison TES 295 or TES 668 approved fluid is in use - do NOT use standard Dexron in 10L1000.
Trailer Brake Controller Configuration (after BCM R&R or new trailer) 2024-2026
GDS2 mandatory configuration: trailer brake type and weight class. IOR gain adjustment. Verify operation with connected trailer before releasing vehicle. Safety-critical at HD GVWR.
Module part numbers by generation
34 full part numbers across 22 module groups for this generation.
Antilock Brakes / Traction Control Systems
-
85016383 -
85016389 -
85016390 -
85564676
Electronic Brake Control Module
-
85107552Anti-Lock Brakes Control Module -
85107552
Forward / Parking Camera
-
84690426Labeled 84690426 -
84690426Parking Aid front camera; Labeled 84690426 -
84690427Labeled 84690427 -
84690427Parking Aid front camera; Labeled 84690427 -
85636222Labeled 85636222 -
85636222Lane Departure Warning camera; Labeled 85636222
Collision Avoidance Sensor
-
84729106Left -
84729107Right
Body Control Module
-
13531840 -
13531840Controls Body Control Module
Blind Spot / Collision Avoidance Sensors
-
84729106Lane Departure Warning blind spot sensor, left; Left -
84729107Lane Departure Warning blind spot sensor, right; Right
Collision Avoidance and Parking Assist Systems
-
84676845Side
Rear Vision Camera
-
84676845Rear
Engine Control Module (ECM / PCM)
-
12725133 -
12725133Powertrain Control ECM
Serial Data Gateway Module
-
13533490 -
13533490Serial Data Gateway Module
Headlamp
-
87818245Order by vehicle application -
87818246Order by vehicle application -
87818247Order by vehicle application -
87818248Order by vehicle application
Instrument Cluster
-
84911501Instrument Cluster; Labeled 84911501/84578504; order by vehicle application -
84911501Labeled 84911501/84578504; order by vehicle application -
84934297Instrument Cluster; Labeled 84934297/84578492; order by vehicle application -
84934297Labeled 84934297/84578492; order by vehicle application -
84935278Instrument Cluster; Labeled 84724442; order by vehicle application -
84935278Labeled 84724442; order by vehicle application -
84960243Instrument Cluster; Labeled 84960243; order by vehicle application -
84960243Labeled 84960243; order by vehicle application -
84960249Instrument Cluster; Labeled 84960249; order by vehicle application -
84960249Labeled 84960249; order by vehicle application
Keyless Entry Receiver and Transmitters
-
13523298 -
13523298Keyless Entry Receiver -
13577765Keyless Entry Transmitter; Without Remote Start; order by vehicle application -
13577765Without Remote Start; order by vehicle application -
22881479Keyless Entry Transmitter; With Remote Start; order by vehicle application -
22881479With Remote Start; order by vehicle application
Parking Assist Control Module
-
84421595Without Near Obstacle Detect -
84716060With Near Obstacle Detect
Parking Assist Control Module and Sensor
-
84421595Parking Aid Control Module; Without Near Obstacle Detect -
84586217 -
84586217Parking Aid Sensor -
84716060Parking Aid Control Module; With Near Obstacle Detect
Rear Vision Camera
-
84676845Parking Aid rear camera; Rear
Antitheft Control Modules
-
13516351Anti-Theft Components Control Module; Without Keyless Engine Start -
13516351Without Keyless Engine Start -
13516352Anti-Theft Components Control Module; With Keyless Engine Start -
13516352With Keyless Engine Start
Side Looking / Parking Camera
-
84676845Parking Aid side camera; Side
Supplemental Restraint System SDM Module
-
13524234 -
13524234Supplemental Restraint System SDM Module
Transmission Control Module
-
24049790Automatic Transmission Trans Controller -
24049790
Transfer Case Control Module
-
86779724 -
86779724Transfer Case Control Module
Wheel Speed Sensors
-
85016383Rear Speed Sensor, Right -
85016389Front Speed Sensor, Right -
85016390Front Speed Sensor, Left -
85564676Rear Speed Sensor, Left
16 gateway, immobilizer, and security items documented across the 2020-2026 generation.
ARCHITECTURE & CONNECTIVITY
Architecture & Connectivity
- Body Construction
- Body-on-frame; high-strength steel full perimeter HD frame
- OBD Protocol
- ISO 15765-4 CAN (500 kbps HS-CAN)
- CAN Architecture
- GMLAN (HS-CAN + MS-CAN), Ethernet select modules; HD powertrain CAN; OBD2 DLC 500kbps HS-CAN
- Infotainment
- Chevrolet Infotainment 3 Plus - 13.4" standard upper trims; 8" base; Google Built-In available; Wireless Apple CarPlay + Android Auto
- OTA Capable
- No
- Infotainment Name
- Chevrolet Infotainment 3 Premium
- Wireless CarPlay
- Yes
- Wireless Android Auto
- Yes
- 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 / collision or lane camera - if equipped (2020), Forward radar / adaptive cruise radar - if equipped (2020), Rear blind-zone, parking, rear camera, or surround-view sensors - if equipped (2020), and Forward Camera (Monocular) (2021). Year-marked systems apply only to the shown range.
- SRS crash-data and warning light SRS service can involve Sensing & Diagnostic Module (SDM), Sensing & Diagnostic Module (SDM) (2020-2023), and Sensing & Diagnostic Module (SDM) (2022-2023). 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 Chevrolet Silverado 2500HD (2020-2026) modules?
Yes. Core Auto Logic supports generation-scoped module programming for the Chevrolet Silverado 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 Chevrolet Silverado 2500HD (2020-2026)?
The Chevrolet Silverado 2500HD (2020-2026) generation currently shows 79 core module records across ECU/PCM, BCM, TCU/TCM, ABS/EBCM, and SRS groups. SRS modules include Sensing & Diagnostic Module (SDM), Sensing & Diagnostic Module (SDM) (2020-2023), and Sensing & Diagnostic Module (SDM) (2022-2023). Part numbers and module variants must be confirmed for your exact year/VIN. Reference part number: 84750512 - confirm for your exact year/VIN.
Does Chevrolet Silverado 2500HD (2020-2026) need ADAS calibration after glass or collision work?
The merged generation data documents 22 ADAS systems, including Forward camera / collision or lane camera - if equipped (2020), Forward radar / adaptive cruise radar - if equipped (2020), Rear blind-zone, parking, rear camera, or surround-view sensors - if equipped (2020), Forward Camera (Monocular) (2021), and Forward Radar (77GHz) (2021). Calibration triggers include Windshield Replacement (Forward Camera Equipped) (2020), Forward Camera Replacement (HD) (2020), Forward Radar Replacement (HD) (2020), and BCM Replacement (2020). Procedure type is VIN-specific scan-tool procedure; verify exact requirements by VIN before setup.
Can you reset the airbag module on Chevrolet Silverado 2500HD (2020-2026)?
Yes. The generation data includes 11 SRS records, including Sensing & Diagnostic Module (SDM), Sensing & Diagnostic Module (SDM) (2020-2023), and Sensing & Diagnostic Module (SDM) (2022-2023). 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: 84750512 - confirm for your exact year/VIN.
Do all Chevrolet Silverado 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 Chevrolet Silverado 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 Chevrolet Silverado 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 Silverado 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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Factory diagnostic software is available. We confirm the appropriate software and supported procedure for your vehicle.
Get onsite help in Dallas-Fort Worth. Ask about same-day availability or a one-time remote session for eligible work.
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.