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2020 GMC Sierra-1500 Supported Services

2020 GMC Sierra-1500

ADAS calibration, module programming, and security relearns

Multiple trim levels available. ADAS feature availability varies by trim and options package. Contact us for specific trim calibration requirements.

Technical snapshot

Platform GMT T1XX (4th Gen)
CAN Architecture GMLAN (HS-CAN 500kbps + MS-CAN 33.3kbps); OBD2 DLC Pin 6/14 HS-CAN 500kbps
Security GM SecureConnect Gen 3 - PASS-Key III+ transponder, PKE passive entry (Denali), RKE 433.92MHz 128-bit rolling code; no OBD pin extraction; AKL via GDS2 + TIS2WEB dealer authorization

Get a Quote See Supported Modules

OVERVIEW

Expert ADAS calibration, module programming, and diagnostic recovery for the 2020 GMC Sierra-1500. On this vehicle we cover documented systems include Forward Camera (Monocular), Forward Radar (77GHz), and Blind Spot Monitor Sensor - Left (BSM), this GMT T1XX (4th Gen) platform vehicle, GM PASS-Key III+ (T1XX Gen 3) immobilizer support, GMC Infotainment 3 infotainment programming. Mobile across the DFW Metroplex; mail-in module work is temporarily unavailable.

Platform

GMT T1XX (4th Gen)

Production

1999-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 / AWD / 4WD

Engine

CAN Speed

GMLAN (HS-CAN 500kbps + MS-CAN 33.3kbps); OBD2 DLC Pin 6/14 HS-CAN 500kbps

YEAR-SPECIFIC NOTES

VIN / Build Split

VIN pos 4-8 identifies series/body/engine. GM WMI: 1GK (GMC SUV), 1GT (GMC truck). Position 8 = engine code. Position 10 = model year code.

Infotainment

GMC Infotainment 3

SERVICE SNAPSHOT

Exact-year service summary for 2020 GMC Sierra-1500

ADAS coverage

This 2020 GMC Sierra-1500 page documents 5 ADAS systems, including Forward Camera (Monocular), Forward Radar (77GHz), Blind Spot Monitor Sensor - Left (BSM), and Blind Spot Monitor Sensor - Right (BSM).

View ADAS data

Calibration triggers

Documented calibration triggers include Windshield Replacement (if Forward Camera Equipped), Forward Camera Replacement, Forward Radar Replacement, and BZA Rear Radar Replacement (either side). Use the ADAS tab for the full trigger list.

View triggers

Programmable modules

This page indexes 25 programmable module records across SRS, ECU, BCM, TCU/TCM, ABS, and IPC coverage.

View modules

Gateway and security

This page includes 11 gateway, immobilizer, or key-security records for this 2020 GMC Sierra-1500.

View security

Core Auto Logic capability

Core Auto Logic supports exact-year diagnostics, ADAS calibration, module programming, and security-access planning for the 2020 GMC Sierra-1500 using the documented systems and module data on this page.

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EXACT-YEAR DIFFERENTIATORS

What changes on this exact year

Feature availability

Available SLE/SLT+: Forward Collision Alert/Automatic Emergency Braking, Lane Ch - Available; Immobilizer: GM PASS-Key III+ (T1XX Gen 3) - Standard; Platform: GMT T1XX (4th Gen) - Confirmed

Driver-assist suite

Available SLE/SLT+: Forward Collision Alert/Automatic Emergency Braking, Lane Change Alert w/Blind Spot Monitoring, Rear Cross-Traffic Alert, HD Rear Camera, Front Camera Safety Package; ProGrade Trailering System (Denali)

VIN and build split

VIN pos 4-8 identifies series/body/engine. GM WMI: 1GK (GMC SUV), 1GT (GMC truck). Position 8 = engine code. Position 10 = model year code.

Infotainment context

GMC Infotainment 3; GMC Infotainment 3 (IOR) - 8" touchscreen; Apple CarPlay + Android Auto standard

Network and access

CAN: GMLAN (HS-CAN 500kbps + MS-CAN 33.3kbps); OBD2 DLC Pin 6/14 HS-CAN 500kbps

TOOL ACCESS MATRIX

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.

Choose a section to view data

SUPPORTED SYSTEMS

What we service on this vehicle

Documented module coverage for the 2020 GMC Sierra-1500. Counts reflect modules our techs have programmed or calibrated on this exact platform.

ADAS Calibration

5 modules documented

Forward camera, radar, surround-view and lane-keep recalibration after windshield, suspension or fascia work.

Open ADAS tab

Engine / ECU Programming

6 modules documented

Powertrain reprogramming, calibration updates, replacement ECU configuration and security access.

Open Modules tab

BCM / Body Programming

3 modules documented

Body control module, gateway and accessory programming. Includes feature-bit reconfiguration.

Open Modules tab

Gateway / Security Access

6 modules documented

Secure gateway module identification, bypass workflow and security-access planning before programming.

Open Security tab

TCU / Transmission

1 module documented

Transmission control module reprogramming, adaptive learning reset and replacement TCM clone.

Open Modules tab

SRS / Airbag Reset

5 modules documented

Crash-data clear, hard-code reset and replacement airbag module configuration.

Open Modules tab

ABS / Brake Module

4 modules documented

ABS / EBCM bleed support, replacement module coding and yaw-rate sensor calibration.

Open Modules tab

Key Security & Immobilizer

3 modules documented

Immobilizer modules, key/fob types, add-key + all-keys-lost (AKL) capability and security overview.

Open Security tab

IPC, SAS & Other Modules

3 modules documented

Instrument cluster cloning, steering angle sensor calibration and other supporting modules.

Open Modules tab

Connectivity & Accessories

3 modules documented

Infotainment radio, surround view, remote start, trailer brake controller and other equipped systems.

Open Modules tab

Recalibration Triggers

12 modules documented

Service events that require ADAS recalibration on this vehicle. Tap to see what triggers what.

Open ADAS tab

Need something not listed? Most undocumented modules can still be programmed.

Get a Quote

Feature availability 3

Available SLE/SLT+: Forward Collision Alert/Automatic Emergency Braking, Lane Ch

Available

Calibration required after windshield replacement, camera/radar service, or structural repair affecting sensor alignment.

Immobilizer: GM PASS-Key III+ (T1XX Gen 3)

Standard

Key programming requires manufacturer-level tool access.

Platform: GMT T1XX (4th Gen)

Confirmed

Verify platform code matches when cross-referencing part numbers across model years.

WHAT WE RESOLVE

Common issues on this vehicle

Common GMC Sierra-1500 issues we resolve on this platform: Forward Camera (Monocular), Forward Radar (77GHz), Blind Spot Monitor Sensor - Left (BSM), and Blind Spot Monitor Sensor - Right (BSM) recalibration after windshield/bumper/suspension/CCM service. Module programming for replacement ECU/PCM, BCM, TCU, or accessory modules - GMT T1XX (4th Gen) platform uses GMLAN (HS-CAN 500kbps + MS-CAN 33.3kbps); OBD2 DLC Pin 6/14 HS-CAN 500kbps. Key programming and immobilizer faults - GM PASS-Key III+ (T1XX Gen 3) immobilizer; all-keys-lost supported.

ADAS CALIBRATION MATRIX

ADAS systems on this vehicle

Scroll for part numbers and Details

System	Type	Category	Cal. Type	Supported	Part #
Forward Camera (Monocular)	Camera	ADAS Camera	Static	YES	84394 (APPROX - VERIFY GMDB BY VIN)
Forward Radar (77GHz)	Radar	ADAS Radar	Static	YES	84277 (APPROX - VERIFY GMDB)
Blind Spot Monitor Sensor - Left (BSM)	Radar	ADAS Radar	Static + Dynamic	YES	23234 (APPROX - VERIFY GMDB)
Blind Spot Monitor Sensor - Right (BSM)	Radar	ADAS Radar	Static + Dynamic	YES	23234
HD Rear Camera	Camera	Rear Vision	None (registration only)	YES	84495 (APPROX - VERIFY GMDB)

WHEN IS CALIBRATION REQUIRED?

Triggers for ADAS recalibration

Windshield Replacement (if Forward Camera Equipped) Affected: Forward Camera, FCA, LCA

Forward camera static calibration via GDS2. Level surface. GM forward target chart at WSM distance. Confirm FCA and LCA DTC-free.

Forward Camera Replacement Affected: Forward Camera, FCA, LCA

GDS2 camera initialization + static calibration. Same procedure as windshield R&R. Verify bracket not damaged.

Forward Radar Replacement Affected: Forward Radar, FCA, Adaptive Cruise

GDS2 radar alignment. Level surface, no metallic obstructions. Bumper fascia R&I for access. Verify Adaptive Cruise and AEB DTC-free.

BZA Rear Radar Replacement (either side) Affected: BZA, RCTA

GDS2 BZA initialization. Fixed mount - no physical aiming. DTC clear. Road verify at 20+ mph.

BCM Replacement Affected: BCM, PASS-Key III+, Remote Start, BSM

SPS programming (TIS2WEB) + VIN tie + all vehicle options + PASS-Key III+ relearn with all keys present.

ECM Replacement (Diesel LM2) Affected: ECM, PASS-Key III+, DPF

SPS programming + VIN tie + PASS-Key parameter transfer + DPF adaptation reset + injector calibration. Diesel-specific extra TIS2WEB session time required.

EBCM / ABS Module Replacement Affected: ABS, StabiliTrak, SAS

GDS2 ABS/ESC initialization + 4-wheel brake bleed + SAS zero-point calibration. Drive 35+ mph straight on level surface.

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

If BSD sensor is mirror-integrated, recalibration required. Verify sensor location; use GDS2/MDI2 if applicable.

SRS MODULES

SRS Modules

Sensing & Diagnostic Module (SDM) 13524234

PART: 13524234
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) 84396838

PART: 84396838
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) 84396837

PART: 84396837
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) 13514198

PART: 13514198
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) 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.

ECU MODULES

ECU Modules

ECM - L3B 2.7L Turbo 4-cyl 12697 (APPROX - VERIFY GMDB)

PART: 12697 (APPROX - VERIFY GMDB)
PROTOCOL: SPS / TIS2WEB
CODING: Yes
CLONE: No
NOTES: SPS programming + VIN tie + PASS-Key III+ parameter transfer. Throttle body relearn + idle relearn via GDS2.

ECM - L84 5.3L V8 EcoTec3 12694 (APPROX - VERIFY GMDB)

PART: 12694 (APPROX - VERIFY GMDB)
PROTOCOL: SPS / TIS2WEB
CODING: Yes
CLONE: No
NOTES: SPS programming + VIN tie + PASS-Key parameter transfer. AFM adaptation reset. Cam phaser relearn. Injector balance rate reset. Idle relearn.

ECM - L87 6.2L V8 EcoTec3 12697 (APPROX

PART: 12697 (APPROX
PROTOCOL: SPS / TIS2WEB
CODING: Yes
CLONE: No
NOTES: SPS programming + VIN tie + PASS-Key parameter transfer. DFM adaptation reset. Cam phaser relearn.

ECM - LM2 3.0L Duramax Diesel 12708 (APPROX - VERIFY GMDB BY VIN)

PART: 12708 (APPROX - VERIFY GMDB BY VIN)
PROTOCOL: SPS / TIS2WEB
CODING: Yes
CLONE: No
NOTES: SPS programming + VIN tie + PASS-Key parameter transfer. DIESEL SPECIFIC: DPF adaptation reset required after ECM replacement. Injector return flow calibration. Glow plug module communication check. DEF system check via GDS2. Allow extra SPS time on TIS2WEB for diesel ECM.

TCM - 8L90 / 8L45 8-Speed Automatic 24285 (APPROX - VERIFY GMDB)

PART: 24285 (APPROX - VERIFY GMDB)
PROTOCOL: GDS2 quick learn + SPS if required
CODING: Yes
CLONE: No
NOTES: GDS2 TCM quick learn after replacement. Adaptive shift data reset. Verify smooth shift quality on road test.

EBCM (Electronic Brake Control Module) 84 (CONTINENTAL

PART: 84 (CONTINENTAL
PROTOCOL: GDS2
CODING: Yes
CLONE: No
NOTES: GDS2 ABS/StabiliTrak initialization + 4-wheel brake bleed. SAS zero-point calibration: GDS2 reset + drive straight 35+ mph.

BCM MODULES

BCM Modules

Body Control Module (BCM) 84252 (APTIV - VERIFY GMDB)

PART: 84252 (APTIV - VERIFY GMDB)
SECURITY: PASS-Key III+
CODING: Yes
CLONE: No
NOTES: SPS programming via TIS2WEB required. All customer keys must be present for relearn. Configure all vehicle options via GDS2 BCM calibration. VIN tie required.

HVAC Control Module 84 (VERIFY GMDB)

PART: 84 (VERIFY GMDB)
SECURITY: None
CODING: Yes
CLONE: No
NOTES: GDS2 HVAC actuator calibration after replacement. Verify all zones operational.

Trailer Brake Control Module (if equipped) 23360 (APPROX - VERIFY GMDB)

PART: 23360 (APPROX - VERIFY GMDB)
SECURITY: None
CODING: Yes
CLONE: No
NOTES: GDS2 configuration for trailer type. User-adjustable gain via IOR. Verify 7-pin connector.

TCU / TCM TRANSMISSION MODULES

TCU / TCM Transmission Modules

TCU - 10L80 10-Speed Auto 24291766

PART: 24291766
PROTOCOL: Bench
CODING: Yes
CLONE: Yes
CHIP/MCU: NXP MPC5748G
NOTES: 10L80 for V8 models. GM GDS2/MDI2 required. Mobil 1 Synthetic LV ATF HP. TCM relearn via scan tool.

ABS / BRAKE MODULES

ABS / Brake Modules

Electronic Brake Control Module (EBCM) 84 (CONTINENTAL

PART: 84 (CONTINENTAL
CLONE: No
NOTES: GDS2 ABS/ESC initialization. 4-wheel brake bleed. SAS zero-point calibration required - GDS2 reset then drive straight 35+ mph. StabiliTrak warning remains until SAS learning completes.

Wheel Speed Sensor - Front (each) 13512 (APPROX - VERIFY GMDB)

PART: 13512 (APPROX - VERIFY GMDB)
CLONE: No
NOTES: Active magnetic. Torque to WSM spec. GDS2 DTC clear + road test at 15+ mph.

Wheel Speed Sensor - Rear (each) 13512 REAR VARIANT (VERIFY GMDB)

PART: 13512 REAR VARIANT (VERIFY GMDB)
CLONE: No
NOTES: Same procedure as front WSS.

Brake Pressure Modulator (HCU) 84 (VERIFY GMDB)

PART: 84 (VERIFY GMDB)
CLONE: No
NOTES: GDS2 automated bleed preferred after HCU replacement. Verify firm pedal before road test.

OTHER MODULES (IPC, SAS)

Other Modules (IPC, SAS)

Instrument Panel Cluster (IPC) 84597926

PART: 84597926
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) 84608346

PART: 84608346
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

OnStar Module (if equipped) 84 (VERIFY GMDB)

PART: 84 (VERIFY GMDB)
NOTES: GDS2 OnStar initialization. Active OnStar subscription required. Modem VIN-tied.

Trailer Brake Controller (integrated) 23360 (APPROX - VERIFY GMDB)

PART: 23360 (APPROX - VERIFY GMDB)
NOTES: GDS2 trailer type configuration. 7-pin connector verify. IOR gain adjustment.

Remote Start (OEM RKE-based) (BCM PARAMETER - RPO UF8)

PART: (BCM PARAMETER - RPO UF8)
NOTES: BCM AsBuilt parameter for remote start. GDS2 BCM configuration. RKE 433.92MHz fob sequence.

GATEWAY / SECURITY MODULES

Gateway / Security Modules

Central Gateway Module

SECURITY: VIN-locked (UDS)
VIN LOCKED: Yes
CODING: Yes
CHIP/MCU: D70F3558(read-write)
NOTES: Compatibility label: Buick. Central gateway routes CAN/CAN-FD/Ethernet between module domains. Replacement requires VIN write and as-built configuration load via OEM software (ODIS, FDRS, DTS Monaco, etc.).

Central Gateway Module

SECURITY: VIN-locked (UDS)
VIN LOCKED: Yes
CODING: Yes
CHIP/MCU: 2015- 1M12S
NOTES: Compatibility label: CRUZE. Central gateway routes CAN/CAN-FD/Ethernet between module domains. Replacement requires VIN write and as-built configuration load via OEM software (ODIS, FDRS, DTS Monaco, etc.).

Central Gateway Module

SECURITY: VIN-locked (UDS)
VIN LOCKED: Yes
CODING: Yes
CHIP/MCU: 2015- 1M12S
NOTES: Compatibility label: Cavalier. Central gateway routes CAN/CAN-FD/Ethernet between module domains. Replacement requires VIN write and as-built configuration load via OEM software (ODIS, FDRS, DTS Monaco, etc.).

Central Gateway Module

SECURITY: VIN-locked (UDS)
VIN LOCKED: Yes
CODING: Yes
CHIP/MCU: D70F3385(read-write)
NOTES: Compatibility label: Chevrolet. Central gateway routes CAN/CAN-FD/Ethernet between module domains. Replacement requires VIN write and as-built configuration load via OEM software (ODIS, FDRS, DTS Monaco, etc.).

Central Gateway Module

SECURITY: VIN-locked (UDS)
VIN LOCKED: Yes
CODING: Yes
CHIP/MCU: 2015- 1M12S
NOTES: Compatibility label: Excelle. Central gateway routes CAN/CAN-FD/Ethernet between module domains. Replacement requires VIN write and as-built configuration load via OEM software (ODIS, FDRS, DTS Monaco, etc.).

Central Gateway Module

SECURITY: VIN-locked (UDS)
VIN LOCKED: Yes
CODING: Yes
CHIP/MCU: 2015- 1M12S
NOTES: Compatibility label: SAIL. Central gateway routes CAN/CAN-FD/Ethernet between module domains. Replacement requires VIN write and as-built configuration load via OEM software (ODIS, FDRS, DTS Monaco, etc.).

KEY SECURITY & IMMOBILIZER

Key Security & Immobilizer

System GM PASS-Key III+ (T1XX Gen 3)
Add Key Yes
All Keys Lost Yes

GM SecureConnect Gen 3 - PASS-Key III+ transponder, PKE passive entry (Denali), RKE 433.92MHz 128-bit rolling code; no OBD pin extraction; AKL via GDS2 + TIS2WEB dealer authorization

IMMOBILIZER MODULES

Immobilizer Modules

PassKey III+ Immobilizer 84252 (APTIV - VERIFY GMDB)

PART: 84252 (APTIV - VERIFY GMDB)
SECURITY: PASS-Key III+
NOTES: Replacement erases all keys. SPS programming (TIS2WEB) + key relearn with ALL customer keys mandatory.

ECM (PASS-Key Security Seed) 12694, 12697, 12708 (ENGINE-DEPENDENT - VERIFY GMDB)

PART: 12694, 12697, 12708 (ENGINE-DEPENDENT - VERIFY GMDB)
SECURITY: PASS-Key III+
NOTES: ECM paired to BCM for PASS-Key III+ security. SPS programming after ECM replacement includes security parameter transfer. No standalone relearn without TIS2WEB.

Key Fob / Transponder 13508771 OR CURRENT GM NUMBER (VERIFY GMDB)

PART: 13508771 OR CURRENT GM NUMBER (VERIFY GMDB)
SECURITY: PASS-Key III+ rolling code
NOTES: GDS2 + TIS2WEB dealer authorization for add key or AKL. No OBD pin extraction.

KEY & FOB TYPES

Key & Fob Types

Standard RKE Key Fob 13508771 (OR CURRENT GM NUMBER - VERIFY GMDB)

PART: 13508771 (OR CURRENT GM NUMBER - VERIFY GMDB)
NOTES: 433.92MHz RKE. PKE passive entry on Denali/AT4. GDS2 + TIS2WEB dealer auth for add key or AKL. Battery CR2032. AKL erases all keys - all customer keys must be present.

Emergency Mechanical Key Blade

NOTES: Door lock only. Does NOT bypass PASS-Key III+ for engine start.

Replacement Notes

BCM replacement requires SPS programming (TIS2WEB) + PASS-Key III+ relearn with all customer keys present. ECM replacement: SPS programming + VIN tie + PASS-Key parameter transfer. Diesel ECM: DPF adaptation reset additionally required. No OBD pin extraction. AKL: GDS2 + TIS2WEB dealer authorization.

ARCHITECTURE & CONNECTIVITY

Architecture & Connectivity

Body Construction: Mixed material; high-strength steel frame; aluminum hood/doors
OBD Protocol: ISO 15765-4 CAN (500 kbps HS-CAN)
CAN Architecture: GMLAN (HS-CAN 500kbps + MS-CAN 33.3kbps); OBD2 DLC Pin 6/14 HS-CAN 500kbps
Infotainment: GMC Infotainment 3 (IOR) - 8" touchscreen; Apple CarPlay + Android Auto standard
OTA Capable: No
Infotainment Name: GMC Infotainment 3
ECU/TCM Unlocking: Contact us
ECU/TCM Flashing: Contact us

OPENPILOT / COMMA.AI

Openpilot Compatibility

Not Supported

Officially supported (openpilot master)

Package: Driver Alert Package II
Hardware: Comma 3X + GM harness
Harness: GM Harness

Only 2020-21 supported.

FREQUENTLY ASKED QUESTIONS

FAQ

How much does ADAS calibration cost for a 2020 GMC Sierra-1500?

ADAS calibration pricing for a 2020 GMC Sierra-1500 depends on which of its 5 documented systems need work after a repair. This vehicle is documented with Forward Camera (Monocular), Forward Radar (77GHz), Blind Spot Monitor Sensor - Left (BSM), Blind Spot Monitor Sensor - Right (BSM), and HD Rear Camera. We provide a fixed quote after confirming the operations performed - send the VIN, the repair scope (windshield R&R, bumper work, alignment, collision), and any DTCs so the quote response can include a real number.

Can you reset the airbag light on a 2020 GMC Sierra-1500?

Yes. The 2020 GMC Sierra-1500 uses a factory SRS control module that we support. We read and clear stored crash data, then restore the module to factory status so the airbag warning light goes out and the system returns to full operation. Reference part number on this vehicle: 13524234. Mobile diagnosis and programming are the active service path. Mail-in bench intake is temporarily unavailable. Send the part number and a description of what triggered the light, and we will provide a quote and scheduling window.

What is needed after replacing the windshield on a 2020 GMC Sierra-1500?

After windshield replacement on a 2020 GMC Sierra-1500, Forward Camera (Monocular), Forward Radar (77GHz), and HD Rear Camera rely on the forward-facing camera and require recalibration before the systems return to operation. We perform the calibration on-site in the DFW Metroplex with OE target fixtures. Mail-in intake is temporarily unavailable.

How long does a 2020 GMC Sierra-1500 module service take?

Most 2020 GMC Sierra-1500 onsite jobs are typically scheduled within 24-48 hours once vehicle readiness, access, and route timing are confirmed. This vehicle has roughly 29 programmable modules documented in our database (6 ECU, 3 BCM, 1 TCU, 4 ABS, plus IPC/SAS/gateway/accessory). Mobile module work and ADAS calibration are scheduled in the DFW service area after quote review. Mail-in module intake is temporarily unavailable.

Do you cover the 2020 GMC Sierra-1500 on-site, or is this mail-in only?

We run a mobile unit across the DFW Metroplex for on-vehicle work (ADAS calibration, key programming, IMMO pairing, post-repair recoding, and supported module work). Mail-in module intake is temporarily unavailable. Quote the work and we will confirm the active service path for the 2020 GMC Sierra-1500. Do not ship a module unless support confirms next steps.

What kind of warranty do you offer on 2020 GMC Sierra-1500 programming?

Every programming, cloning, and calibration job on the 2020 GMC Sierra-1500 is backed by a workmanship warranty covering the scope of work we performed: 1-year unlimited on all flashes, clones, and ADAS calibrations. If a module we programmed or a calibration we performed fails to function as expected, return it and we restore it at no charge. The warranty covers our work; it does not cover unrelated mechanical or electrical failure of the module itself.

Can you program a 2020 GMC Sierra-1500 with no working keys (all-keys-lost)?

Yes - all-keys-lost is supported on the 2020 GMC Sierra-1500. Immobilizer generation on this platform: GM PASS-Key III+ (T1XX Gen 3). Adding a key (with a working key already in hand) is also supported - typically faster and less expensive than an all-keys-lost reset. Submit the VIN and we will confirm the procedure and quote before scheduling.

Which modules on a 2020 GMC Sierra-1500 can you actually service?

We program, clone, repair, or replace the full programmable-module stack on a 2020 GMC Sierra-1500. For this vehicle our database documents:

6 engine control (ECU/PCM)
1 transmission control (TCU/TCM)
3 body control (BCM and related)
4 ABS / brake control (EBCM)
3 immobilizer / security
2 key & fob
2 instrument cluster (IPC)
1 steering angle sensor (SAS)
5 ADAS module

Infotainment on this platform: GMC Infotainment 3. Send the VIN and the operations performed and we will confirm support and pricing.

OTHER MODEL YEARS

2026 2025 2024 2023 2022 2021 2019 2018 2017 2016 2020

OTHER GMC MODELS

Acadia Yukon Sierra-2500HD Canyon Terrain Savana Yukon-Xl Hummer-EV

Additional Module Part Numbers

Additional OEM-sourced part numbers for the 2020 GMC Sierra-1500 covering ADAS, ECU/PCM, BCM, TCU/TCM, SRS, ABS/EBCM, instrument cluster (IPC), gateway, and steering angle sensor modules when available. These reference numbers assist technicians with module identification and sourcing prior to programming.

ADAS Module Part Numbers: 84394, 84277, 23234, 84495
ECU / PCM Part Numbers: 12697, L87 6.2L V8 ECOTEC3, 12694, 12708
BCM / Body Module Part Numbers: 84252 (APTIV - VERIFY GMDB), 84 (VERIFY GMDB), 23360 (APPROX - VERIFY GMDB)
TCU / TCM Part Numbers: 24291766
SRS / Airbag Module Part Numbers: 13524234, 84396838, 84396837, 13514198, 84750512
ABS / EBCM Part Numbers: 84528
Instrument Cluster (IPC) Part Numbers: 84597926, 84608346
Transmission Control Module (TCM) Part Numbers: 24291766

Part numbers are OEM base references. Verify exact suffix via VIN-specific build data before ordering. Core Auto Logic provides mobile programming services for all listed modules in the DFW area.

Different trim or build?

Send your VIN and we'll confirm exact module support and pricing in the quote response.

Send VIN & ask (945) 382-4065

Hit a security wall? We've got the keys.

1-year unlimited warranty on every flash and calibration.

Get a Quote (945) 382-4065

(945) 382-4065 Get a Quote

Shared module fitment

Vehicles sharing modules with the 2020 GMC Sierra 1500

These vehicles use one or more of the same replacement modules indexed for this vehicle.

2015 Gmc Sierra 1500 PCM 2016 Gmc Sierra 1500 PCM 2017 Gmc Sierra 1500 PCM 2018 Gmc Sierra 1500 PCM 2021 Gmc Sierra 1500 PCM 2022 Gmc Sierra 1500 PCM