Available: Forward Camera Safety Package, Adaptive Cruise w/Trailer Brake Assist
AvailableCalibration required after windshield replacement, camera/radar service, or structural repair affecting sensor alignment.
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2020-2026 Chevrolet Silverado 2500HD Generation Guide
Chevrolet Silverado 2500HD 4th Gen T1XX (2020-2026) ADAS Calibration & Module Programming
Covers model years 2020-2026 - one service guide for the whole generation.
Full ADAS calibration, module programming, and key security work for every Chevrolet Silverado 2500HD built on this platform. Same-day mobile service across the Dallas/Fort Worth metroplex; mail-in accepted nationwide.
- Platform GMT T1 HD (Heavy Duty)
- CAN Architecture GMLAN (HS-CAN + MS-CAN), Ethernet select modules; HD powertrain CAN; OBD2 DLC 500kbps HS-CAN
- Security GM PASS-Key III+ - BCM PKE passive entry, RKE fob, 128-bit rolling code; GDS2 + TIS2WEB AKL
The ADAS, module, and security rows below are consolidated across the full 2020-2026 generation. A year badge marks rows that apply only to part of the span; rows without a badge apply to every year. Year-specific differences are summarized under “What changes across 2020-2026”.
OVERVIEW
Expert ADAS calibration, module programming, and diagnostic recovery for the 2024 Chevrolet Silverado-2500hd. On this vehicle we cover documented systems include Forward Camera (Monocular), Forward Radar (77GHz), and Blind Spot Monitor Sensor - Left (BSM), this GMT T1 HD (Heavy Duty) platform vehicle, GM PASS-Key III+ (T1 HD Gen) immobilizer support, Chevrolet Infotainment 3 Premium infotainment programming. Mobile across the DFW Metroplex, mail-in nationwide for module-bench work.
Platform
GMT T1 HD (Heavy Duty)
Production
2001-present
Trim Levels
Multiple trim levels available. ADAS feature availability varies by trim and options package. Contact us for specific trim calibration requirements.
Drivetrain
RWD / 4WD
Engine
-
CAN Speed
GMLAN (HS-CAN + MS-CAN), Ethernet select modules; HD powertrain CAN; OBD2 DLC 500kbps HS-CAN
Feature availability 3
Immobilizer: GM PASS-Key III+ (T1 HD Gen)
StandardKey programming requires manufacturer-level tool access.
Platform: GMT T1 HD (Heavy Duty)
ConfirmedVerify platform code matches when cross-referencing part numbers across model years.
Tool access for this exact year
Representative tool access paths for this exact model year, gated by the vehicle data and source packet we currently trust.
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.
OEM subscription required
Make-level OEM tool map plus exact-year gateway and ADAS fields.
ADAS scan, setup, and verification
Autel, Launch Tech, Topdon
Used where aftermarket coverage supports the procedure; OEM software remains required for locked factory routines.
Tool subscription required
Service-level scanner-vendor source packet plus exact-year ADAS records.
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
Bench programmer source packet plus exact-year module/security records.
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)
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.
Choose a yearADAS coverage
Merged ADAS coverage includes 8 system records, including Forward Camera (Monocular), Forward Radar (77GHz), Blind Spot Monitor Sensor - Left (BSM), and Blind Spot Monitor Sensor - Right (BSM). Year-marked systems apply only to the shown range.
View ADAS dataCalibration triggers
This generation has 16 merged calibration trigger records. Trigger applicability can vary by year - verify by VIN before setup.
View triggersProgrammable modules
Module support is confirmed by VIN and part number when no merged module records are listed.
View modulesGateway and security
Gateway and immobilizer access is checked by VIN before programming or key service.
View securityCore Auto Logic capability
Core Auto Logic supports generation-level diagnostics, ADAS calibration, module programming, security-access planning, and mail-in bench work for the Chevrolet Silverado 2500HD 2020-2026 span, with exact-year validation before service.
Get a quoteDo I need calibration?
Windshield Replacement (Forward Camera Equipped) 1
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) 1
GDS2 HD initialization + static calibration. Inspect bracket. Confirm FCA and AEB operational.
Forward Radar Replacement (HD) 1
GDS2 HD radar alignment. Level surface, 10 ft front clearance. Remove fascia before confirming alignment. HD calibration values only.
BCM Replacement 1
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 1
SPS via TIS2WEB + VIN + PASS-Key parameter transfer + idle/throttle relearn.
ECM Replacement - L5P Duramax Diesel 1
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) 1
!!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) 1
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 1
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) 1
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
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.
Any Front-End Collision 1
Yes
Inspect and recalibrate forward camera after any front-end collision using GDS2/MDI2.
Front Bumper Repair or Replacement 1
Yes
Forward radar angular alignment required after front bumper R&R. Use GDS2/MDI2.
Rear Bumper Repair or Replacement 1
Yes
BSD radar alignment required after rear bumper R&R. Use GDS2/MDI2.
BSM Sensor Replacement 1
Yes
Blind spot monitoring sensor replacement requires calibration using GDS2/MDI2.
Mirror Replacement 1
Yes
Surround view mirror camera recalibration required after mirror R&R. Use GDS2/MDI2.
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 year. 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)
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 (Monocular) | Camera | ADAS | Static | YES | 84394 HD (APPROX - VERIFY 2024 GMDB) | |
| Forward Radar (77GHz) | Radar | ADAS | Static + Dynamic | YES | 84277 HD (APPROX - VERIFY 2024 GMDB) | |
| Blind Spot Monitor Sensor - Left (BSM) | Radar | ADAS | Static + Dynamic | YES | 23234 HD (APPROX) | |
| Blind Spot Monitor Sensor - Right (BSM) | Radar | ADAS | Static + Dynamic | YES | 23234 HD | |
| HD Surround Vision (if equipped) | Camera | ADAS | Static | YES | OEM GM HD (VERIFY 2024 GMDB) | |
| Rear Pedestrian Alert | Radar | ADAS | Static | YES | - | |
| Adaptive Cruise w/Trailer Brake Assist | Software | ADAS | None | YES | - | |
| HD Rear Camera | 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)
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)
GDS2 HD initialization + static calibration. Inspect bracket. Confirm FCA and AEB operational.
Forward Radar Replacement (HD)
GDS2 HD radar alignment. Level surface, 10 ft front clearance. Remove fascia before confirming alignment. HD calibration values only.
BCM Replacement
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
SPS via TIS2WEB + VIN + PASS-Key parameter transfer + idle/throttle relearn.
ECM Replacement - L5P Duramax Diesel
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)
!!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)
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
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)
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)
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.
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.
Modules we program on this generation
Documented Chevrolet Silverado 2500HD module coverage for 2020-2026. Open a group for part numbers, programming protocol, security notes, and clone support.
SRS MODULES
SRS Modules
Sensing & Diagnostic Module (SDM) 84750512
- PART
- 84750512
- LOCATION
- Under center console
- MFG
- 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.
Sensing & Diagnostic Module (SDM) 13552072
- PART
- 13552072
- LOCATION
- Under center console
- MFG
- 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.
Sensing & Diagnostic Module (SDM) 13525286
- PART
- 13525286
- LOCATION
- Under center console
- MFG
- 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.
Sensing & Diagnostic Module (SDM) 85133042
- PART
- 85133042
- LOCATION
- Under center console
- MFG
- 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.
Sensing & Diagnostic Module (SDM) 85133043
- PART
- 85133043
- LOCATION
- Under center console
- MFG
- 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.
Sensing & Diagnostic Module (SDM) 13518546
- PART
- 13518546
- LOCATION
- Under center console
- MFG
- 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.
ECU MODULES
ECU Modules
ECM - L8T 6.6L V8 Gas (401HP) 12710 (APPROX - VERIFY 2024 GMDB)
- PART
- 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) 12714 (APPROX - VERIFY 2024 GMDB)
- PART
- 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) OEM GM DURAMAX (VERIFY 2024 GMDB BY VIN)
- PART
- 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) OEM ALLISON (VERIFY 2024 GMDB)
- PART
- 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) 24285 (APPROX - VERIFY 2024 GMDB)
- PART
- 24285 (APPROX - VERIFY 2024 GMDB)
- NOTES
- GDS2 TCM quick learn. Adaptive shift reset. Verify smooth shift quality.
EBCM (HD - 2024) 84 HD (CONTINENTAL, DELPHI - VERIFY 2024 GMDB)
- PART
- 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.
BCM MODULES
BCM Modules
BCM (HD - 2024) 84252 HD (VERIFY 2024 GMDB SUFFIX)
- PART
- 84252 HD (VERIFY 2024 GMDB SUFFIX)
- NOTES
- SPS programming via TIS2WEB. PASS-Key III+ database - ALL customer keys required for relearn. 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. Do not return vehicle until all keys confirmed learned.
Integrated Trailer Brake Controller
- 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 84 HD (VERIFY 2024)
- PART
- 84 HD (VERIFY 2024)
- NOTES
- GDS2 HVAC actuator calibration after replacement.
TCU / TCM TRANSMISSION MODULES
TCU / TCM Transmission Modules
TCU - 10L90 10-Speed Auto 84632
- PART
- 84632
- PROTOCOL
- J2534
- CODING
- Yes
- CLONE
- Yes
- CHIP/MCU
- Continental TC297
- NOTES
- Requires VIN programming, TCM relearn via Tech2Win or GDS2, Dexron VI ATF, shift adaptation reset required
TCU - 6L90 6-Speed Auto 24258
- PART
- 24258
- PROTOCOL
- J2534
- CODING
- Yes
- CLONE
- Yes
- CHIP/MCU
- Bosch TC1797
- NOTES
- Legacy option, requires SPS programming, transmission adaptation procedure via GDS2, Dexron VI specification
ABS / BRAKE MODULES
ABS / Brake Modules
EBCM (HD - 2024) 84 HD (VERIFY 2024 GMDB - DO NOT SUBSTITUTE 1500 PART)
- PART
- 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 13512 HD VARIANT
- PART
- 13512 HD VARIANT
- NOTES
- Active magnetic. Torque to spec. GDS2 DTC clear + road test 15+ mph.
Wheel Speed Sensor - Front Right 13512 HD VARIANT
- PART
- 13512 HD VARIANT
- NOTES
- Same procedure.
Wheel Speed Sensor - Rear Left 13512 HD REAR (AAM
- PART
- 13512 HD REAR (AAM
- NOTES
- HD rear axle. Torque to spec. Road test verify.
Wheel Speed Sensor - Rear Right 13512 HD REAR
- PART
- 13512 HD REAR
- NOTES
- Same procedure.
Brake Pressure Modulator / HCU (HD)
- 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 (IPC, SAS)
Other Modules (IPC, SAS)
Instrument Panel Cluster (IPC) 85012310
- PART
- 85012310
- CLONE
- Yes
- NOTES
- IPC cloning required for mileage preservation during replacement. Use Launch advanced programming tool or EEPROM programming tool for EEPROM read/write.
Instrument Panel Cluster (IPC) 85766102
- PART
- 85766102
- CLONE
- 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)
- CODING
- Yes
- NOTES
- INTEGRATED (SCM clock spring)
CONNECTIVITY & ACCESSORIES
Connectivity & Accessories
Integrated Trailer Brake Controller
- 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.
OnStar Module (if equipped)
- NOTES
- GDS2 init. VIN-tied modem. Active subscription for remote features and diagnostics.
Remote Start (BCM parameter) RPO UF8, AP9
- PART
- RPO UF8, AP9
- NOTES
- GDS2 BCM configuration. Verify after BCM replacement.
Snowplow Prep Package (RPO VYU / RPO V76)
- 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.
Fifth Wheel / Gooseneck Prep (if equipped)
- NOTES
- No module calibration - structural and wiring prep. Trailer brake controller GDS2 config still required before use.
GATEWAY / SECURITY MODULES
Gateway / Security Modules
Central Gateway Module
- MFG
- Renesas
- SECURITY
- VIN-locked (UDS)
- VIN LOCKED
- Yes
- CODING
- Yes
- CHIP/MCU
- D70F3585
- NOTES
- Compatibility label: Chevrolet. Air conditioning | Notes: Read/Write
Central Gateway Module
- MFG
- Renesas
- SECURITY
- VIN-locked (UDS)
- VIN LOCKED
- Yes
- CODING
- Yes
- CHIP/MCU
- D70F3558
- NOTES
- Compatibility label: Buick. BCM | Notes: Read/Write
Central Gateway Module
- MFG
- Various / Unlisted
- SECURITY
- VIN-locked (UDS)
- VIN LOCKED
- Yes
- CODING
- Yes
- CHIP/MCU
- 1M12S
- NOTES
- Compatibility label: CRUZE. BCM | Notes: Years: 2015-
Central Gateway Module
- MFG
- Various / Unlisted
- SECURITY
- VIN-locked (UDS)
- VIN LOCKED
- Yes
- CODING
- Yes
- CHIP/MCU
- 1M12S
- NOTES
- Compatibility label: Cavalier. BCM | Notes: Years: 2015-
Central Gateway Module
- MFG
- Various / Unlisted
- SECURITY
- VIN-locked (UDS)
- VIN LOCKED
- Yes
- CODING
- Yes
- CHIP/MCU
- 1M12S
- NOTES
- Compatibility label: Excelle. BCM | Notes: Years: 2015-
Central Gateway Module
- MFG
- Various / Unlisted
- SECURITY
- VIN-locked (UDS)
- VIN LOCKED
- Yes
- CODING
- Yes
- CHIP/MCU
- 1M12S
- NOTES
- Compatibility label: SAIL. BCM | Notes: Years: 2015-
KEY SECURITY & IMMOBILIZER
Key Security & Immobilizer
- System GM PASS-Key III+ (T1 HD Gen)
- Add Key Yes
- All Keys Lost Yes
GM PASS-Key III+ - BCM PKE passive entry, RKE fob, 128-bit rolling code; GDS2 + TIS2WEB AKL
IMMOBILIZER MODULES
Immobilizer Modules
PassKey III+ Immobilizer OEM GM HD FOB (VERIFY CURRENT 2024 PN VIA GMDB)
- PART
- OEM GM HD FOB (VERIFY CURRENT 2024 PN VIA GMDB)
- NOTES
- GM PASS-Key III+ with PKE passive entry. GDS2 + TIS2WEB required for add key or AKL. No key pin extraction via OBD. Dealer authorization required for AKL via TIS2WEB.
PassKey III+ Immobilizer 84252 HD
- PART
- 84252 HD
- NOTES
- BCM replacement erases key database. SPS programming (TIS2WEB) mandatory. Relearn ALL customer keys after BCM replacement - do not deliver vehicle until confirmed.
ECM (PASS-Key Security Seed) 12710, 12714 HD
- PART
- 12710, 12714 HD
- NOTES
- ECM paired to BCM for PASS-Key III+. SPS programming transfers security parameters. L5P diesel: additionally requires DPF + DEF initialization after ECM replacement.
KEY & FOB TYPES
Key & Fob Types
Standard RKE Key Fob OEM GM HD FOB (VERIFY CURRENT 2024 PN VIA GMDB BY VIN)
- PART
- OEM GM HD FOB (VERIFY CURRENT 2024 PN VIA GMDB BY VIN)
- NOTES
- RKE + passive entry. GDS2 + TIS2WEB for add key or AKL. Dealer authorization required for AKL. Rolling code resync via GDS2 if fob desynchronized after battery replacement. CR2032 battery. Maximum keys per VIN - verify in BCM configuration.
Replacement Notes
BCM SPS (TIS2WEB) + PASS-Key relearn all keys. ECM SPS + VIN + PASS-Key. L5P diesel: DPF adaptation reset + DEF system initialization. AKL: GDS2 + TIS2WEB dealer authorization.
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 Unlock Supported
- No
- Custom Programming
- Yes
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), Forward Radar (77GHz), Blind Spot Monitor Sensor - Left (BSM), and Blind Spot Monitor Sensor - Right (BSM). Year-marked systems apply only to the shown range.
- SRS crash-data and warning light SRS service can involve Sensing & Diagnostic Module (SDM). 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.
- Gateway, key, and immobilizer access Gateway, key, and immobilizer procedures are represented by 10 merged security records. Access and all-keys-lost support varies by 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 23 core module records across ECU/PCM, BCM, TCU/TCM, ABS/EBCM, and SRS groups. SRS examples include Sensing & Diagnostic Module (SDM). 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 8 ADAS systems, including Forward Camera (Monocular), Forward Radar (77GHz), Blind Spot Monitor Sensor - Left (BSM), Blind Spot Monitor Sensor - Right (BSM), and HD Surround Vision (if equipped). Calibration triggers include Windshield Replacement (Forward Camera Equipped), Forward Camera Replacement (HD), Forward Radar Replacement (HD), and BCM Replacement. 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 6 SRS records, including Sensing & Diagnostic Module (SDM). 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.
Can you program keys or immobilizer systems for Chevrolet Silverado 2500HD (2020-2026)?
Yes, where the VIN and security workflow support it. The generation data includes 10 gateway, immobilizer, or key-security records. Gateway examples include Central Gateway Module. Key records are present in the merged generation data. Security access, all-keys-lost eligibility, and add-key workflows vary by year - verify by VIN.
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 work typically depends on module condition, donor data, and shipping window.
Is Chevrolet Silverado 2500HD (2020-2026) service mobile or mail-in?
Both paths are available depending on the job. Mobile service covers DFW on-vehicle diagnostics, ADAS setup, key programming, and post-repair coding. Mail-in service covers ECU, BCM, SRS, TCU, ABS, and other bench module work nationwide. We confirm the correct path for your exact year/VIN before scheduling.