ADAS coverage
This 2021 Chevrolet Tahoe page documents 7 ADAS systems, including Forward Camera (Monocular), Forward Radar (77GHz), Blind Spot Monitor Sensor - Left (BSM), and Blind Spot Monitor Sensor - Right (BSM).
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2021 Chevrolet Tahoe Supported Services
2021 Chevrolet Tahoe
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 (5th Gen Full-Size SUV)
- CAN Architecture GMLAN (HS-CAN + MS-CAN), Ethernet backbone on select modules; OBD2 DLC Pin 6/14 HS-CAN 500kbps
- Security GM PASS-Key III+ - BCM PKE passive entry, RKE 315MHz 128-bit rolling code; GDS2 + TIS2WEB for AKL
What do you need fixed?
Choose a service to start your quote.
Exact-year service summary for 2021 Chevrolet Tahoe
Calibration triggers
Documented calibration triggers include Windshield Replacement (Forward Camera Equipped), Forward Camera Replacement, Forward Radar (77GHz) Replacement, and Surround View Camera Replacement (any of 4). Use the ADAS tab for the full trigger list.
View triggersProgrammable modules
This page indexes 29 programmable module records across SRS, ECU, BCM, TCU/TCM, ABS, and IPC coverage.
View modulesGateway and security
This page includes 6 gateway, immobilizer, or key-security records for this 2021 Chevrolet Tahoe.
View securityCore Auto Logic capability
Core Auto Logic supports exact-year diagnostics, ADAS calibration, module programming, and security-access planning for the 2021 Chevrolet Tahoe using the documented systems and module data on this page.
Choose a sectionVIN and build details determine exact service eligibility. A missing record does not mean we cannot help; ask about your vehicle.
YEAR-SPECIFIC NOTES
VIN / Build Split
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.
Infotainment
Chevrolet Infotainment 3
Vehicle specifications & technical reference
OVERVIEW
Platform
GMT T1XX (5th Gen Full-Size SUV)
Production
2000-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
CAN Speed
GMLAN (HS-CAN + MS-CAN), Ethernet backbone on select modules; OBD2 DLC Pin 6/14 HS-CAN 500kbps
What changes on this exact year
Feature availability
GM Co-Pilot360: Forward Collision Alert/Automatic Emergency Braking, Lane Change - Available; Platform: GMT T1XX (5th Gen Full-Size SUV) - Confirmed
Driver-assist suite
GM Co-Pilot360: Forward Collision Alert/Automatic Emergency Braking, Lane Change Alert w/Blind Spot Monitoring, Rear Cross-Traffic Alert, HD Rear Camera, Front Camera Safety Package, Surround View (available), Super Cruise (High Country RPO KSG)
VIN and build split
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.
Infotainment context
Chevrolet Infotainment 3; Chevrolet Infotainment 3 Premium - 10.2" touchscreen standard; 15" diagonal portrait display on High Country; Apple CarPlay + Android Auto
Network and access
CAN: GMLAN (HS-CAN + MS-CAN), Ethernet backbone on select modules; OBD2 DLC Pin 6/14 HS-CAN 500kbps
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.
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
Choose a section to view data
SUPPORTED SYSTEMS
What we service on this vehicle
Documented module coverage for the 2021 Chevrolet Tahoe. Counts reflect modules our techs have programmed or calibrated on this exact platform.
ADAS Calibration
7 modules documented
Forward camera, radar, surround-view and lane-keep recalibration after windshield, suspension or fascia work.
Open ADAS tabEngine / ECU Programming
7 modules documented
Powertrain reprogramming, calibration updates, replacement ECU configuration and security access.
Open Modules tabBCM / Body Programming
5 modules documented
Body control module, gateway and accessory programming. Includes feature-bit reconfiguration.
Open Modules tabGateway / Security Access
1 module documented
Secure gateway module identification, bypass workflow and security-access planning before programming.
Open Security tabTCU / Transmission
1 module documented
Transmission control module reprogramming, adaptive learning reset and replacement TCM clone.
Open Modules tabSRS / Airbag Reset
3 modules documented
Crash-data clear, hard-code reset and replacement airbag module configuration.
Open Modules tabABS / Brake Module
6 modules documented
ABS / EBCM bleed support, replacement module coding and yaw-rate sensor calibration.
Open Modules tabIPC, SAS & Other Modules
2 modules documented
Instrument cluster cloning, steering angle sensor calibration and other supporting modules.
Open Modules tabConnectivity & Accessories
5 modules documented
Infotainment radio, surround view, remote start, trailer brake controller and other equipped systems.
Open Modules tabRecalibration Triggers
16 modules documented
Service events that require ADAS recalibration on this vehicle. Tap to see what triggers what.
Open ADAS tabNeed something not listed? Most undocumented modules can still be programmed.
Get a QuoteFeature availability 2
GM Co-Pilot360: Forward Collision Alert/Automatic Emergency Braking, Lane Change
AvailableCalibration required after windshield replacement, camera/radar service, or structural repair affecting sensor alignment.
Platform: GMT T1XX (5th Gen Full-Size SUV)
ConfirmedVerify platform code matches when cross-referencing part numbers across model years.
WHAT WE RESOLVE
Common issues on this vehicle
Common Chevrolet Tahoe 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 (5th Gen Full-Size SUV) platform uses GMLAN (HS-CAN + MS-CAN), Ethernet backbone on select modules; OBD2 DLC Pin 6/14 HS-CAN 500kbps.
ADAS CALIBRATION MATRIX
ADAS systems on this vehicle
GM Co-Pilot360: Forward Collision Alert/Automatic Emergency Braking, Lane Change Alert w/Blind Spot Monitoring, Rear Cross-Traffic Alert, HD Rear Camera, Front Camera Safety Package, Surround View (available), Super Cruise (High Country RPO KSG)
Scroll for part numbers and Details
| System | Type | Category | Cal. Type | Supported | Part # | Actions |
|---|---|---|---|---|---|---|
| Forward Camera (Monocular) | Camera | ADAS | Static | YES | 84394 (APPROX - VERIFY GMDB) | |
| Forward Radar (77GHz) | Radar | ADAS | Static + Dynamic | YES | 84277 (APPROX) | |
| Blind Spot Monitor Sensor - Left (BSM) | Radar | ADAS | Static + Dynamic | YES | 23234 (APPROX) | |
| Blind Spot Monitor Sensor - Right (BSM) | Radar | ADAS | Static + Dynamic | YES | 23234 | |
| Surround View Camera System (4-camera) | Camera | ADAS | Static | YES | 84 (EACH CAMERA - VERIFY GMDB) | |
| HD Rear Camera | Camera | ADAS | Static | YES | 84495 (APPROX) | |
| Super Cruise Camera/Sensor Suite (High Country RPO KSG) | Software | ADAS | None | YES | - |
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)
Forward camera static calibration required via GDS2 after any windshield replacement. Level surface. GM-specified forward target chart at WSM distance. Camera and radar calibrated sequentially. Confirm FCA, AEB, Lane Change Alert all operational.
Forward Camera Replacement
GDS2 camera initialization + static calibration. Inspect windshield bracket - do not reuse damaged bracket. Confirm Forward Collision Alert and AEB functional.
Forward Radar (77GHz) Replacement
GDS2 radar alignment. Level surface, 10 ft front clearance, no metallic obstructions in radar FOV. Remove bumper fascia before confirming alignment complete.
Surround View Camera Replacement (any of 4)
All 4 surround view cameras must be recalibrated together. Calibration mat J-49878 required on flat, level surface per WSM placement diagram. GDS2 surround view calibration procedure. Partial calibration not acceptable.
BZA Rear Radar Replacement (either side)
GDS2 BZA module initialization. No physical aiming - fixed mount. Verify RCTA + BZA DTC clear. Road verify at 20+ mph both sides.
BCM Replacement
SPS programming (TIS2WEB) + VIN + all vehicle options (Surround View, Super Cruise RPO KSG, BSM, remote start, trailer, heated seats) + PASS-Key III+ key relearn with ALL keys present.
ECM Replacement (any engine)
SPS programming (TIS2WEB) + VIN + PASS-Key parameter transfer + idle/throttle relearn. L84: AFM adaptation reset. L87: DFM adaptation reset. LM2 diesel: DPF adaptation reset + DEF system check + injector calibration.
EBCM / ABS Module Replacement
GDS2 ABS/ESC initialization + 4-wheel brake bleed + steering angle sensor zero-point calibration. Drive straight at 35+ mph on level surface. StabiliTrak warning remains until SAS learning completes.
Steering Angle Sensor / Wheel Alignment
GDS2 SAS zero-point reset after alignment or SAS replacement. Drive straight at 35+ mph. StabiliTrak and LKAS may be limited until calibration completes.
Super Cruise System Service (High Country)
GDS2 Super Cruise initialization required after any sensor replacement. Active OnStar subscription must be verified. RPO KSG must be present in BCM. System requires LiDAR map coverage for operation.
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.
Forward Radar Replacement
Radar module replacement requires alignment/calibration using 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.
No matching records. Try a shorter part number or clear the filters. You can still request help if your module is not listed.
SRS - Airbag Modules
Sensing & Diagnostic Module (SDM) 13518546
- 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.
Sensing & Diagnostic Module (SDM) 84396838
- 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.
Sensing & Diagnostic Module (SDM) 84396837
- 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.
ECU - Engine Computer
ECM - L84 5.3L V8 EcoTec3 (standard engine) 1 record
- Part number
- 12719704
- Notes
- SPS programming via TIS2WEB. VIN tie required. PASS-Key III+ security parameter transfer from old ECM. AFM (Active Fuel Management) adaptation reset after ECM replacement. Cam phaser relearn via GDS2. Injector balance rate reset. Idle relearn procedure. Parts reference for 2021 Chevrolet Tahoe 4WD 5.3L V8. Application: 5.3L V8 configuration; match VIN, build date and equipment. ECU family: GM E90. Match VIN, build date, equipment and the full module label before selecting a replacement. This reference does not establish interchange, cloning or unlock support.
ECM - L87 6.2L V8 EcoTec3 (High Country / RST) 1 record
- Notes
- SPS programming via TIS2WEB. VIN tie. DFM (Dynamic Fuel Management) cylinder deactivation adaptation reset. Cam phaser relearn. PASS-Key parameter transfer. Exact part number for this entry remains unverified.
ECM - LM2 3.0L Duramax Diesel (if equipped) 1 record
- Notes
- SPS programming via TIS2WEB. VIN tie + PASS-Key parameter transfer. DIESEL-SPECIFIC: DPF (Diesel Particulate Filter) adaptation reset required after ECM replacement. Injector return flow calibration. Glow plug module communication check. DEF system check via GDS2. Diesel ECM programming takes longer - allow extra SPS time on TIS2WEB. Exact part number for this entry remains unverified.
TCM - 10L80 10-Speed Automatic 1 record
- Notes
- GDS2 TCM quick learn procedure after replacement. Transmission adaptive shift data reset. SPS programming if required per RPO. Verify smooth shift quality through all 10 gears on road test. Exact part number for this entry remains unverified.
EBCM (Electronic Brake Control Module) 1 record
- Notes
- GDS2 ABS/StabiliTrak initialization + 4-wheel manual bleed sequence after replacement. Steering angle sensor calibration required post-replacement - GDS2 SAS reset + drive straight at 35+ mph. Exact part number for this entry remains unverified.
IOR / Infotainment Module (10.2" or 15") 1 record
- Notes
- GDS2 radio/IOR setup after replacement. RKE remote pairing via GDS2 if radio-integrated. 15" High Country unit is a different part number. Exact part number for this entry remains unverified.
E90 ECM - historical OEM reference, 5.3 L84 or 6.2 L87 1 record
- Part number
- 12711353
- Notes
- 2021 Chevrolet Tahoe, North America, 5.3 L84 or 6.2 L87 gasoline engines. Historical GM PIP5726 reference dated June 12, 2020 identifies E90 ECM 12711353. This does not establish current parts restriction, replacement ordering or universal interchange. Excludes the 3.0L diesel. Match VIN, engine RPO and the original label before replacement selection.
BCM - Body Electronics
Body Control Module (BCM) 13548775
- Part number
- 13548775
- Notes
- SPS programming via TIS2WEB required after replacement. Configure all vehicle options in BCM calibration (trailer, heated seats, remote start, BSM, Surround View, Super Cruise RPO KSG if equipped). VIN programming required. OTA module on 2021+ - verify connectivity after replacement. Parts reference for 2021 Chevrolet Tahoe 4WD 5.3L V8. Application: 5.3L V8 configuration; match VIN, build date and equipment; match original BCM label; applicable label references include 13546971, 13546972, 13546978 and 13548771. Match VIN, build date, equipment and the full module label before selecting a replacement. This reference does not establish interchange, cloning or unlock support.
Trailer Brake Control Module (if equipped)
- Notes
- Integrated trailer brake controller. GDS2 configuration for trailer type and weight class. User gain adjustment via IOR infotainment interface. Exact part number for this entry remains unverified.
HVAC Control Module
- Notes
- Tri-zone or dual-zone auto climate. GDS2 HVAC actuator calibration after replacement. Verify all zones operational. Exact part number for this entry remains unverified.
IPM (Integrated Power Module)
- Notes
- Fuse/relay distribution. SPS programming if module-equipped variant. Verify all circuits post-replacement. Exact part number for this entry remains unverified.
Body Control Module (exact label/VIN/region qualification) 13548775
- Part number
- 13548775
- Notes
- Parts reference: GM Genuine Parts Body Control Module 13548775 for 2021 Chevrolet Tahoe, 5.3L V8 gasoline, engine VIN character D only. The module label must match one of these catalog qualification values: 13548775, 13548771, 13548772, 13546978, 13546971 or 13546972. These six values are original-label selection conditions, not six newly identified service modules or an interchange chain. Excludes Russia Group (MBR). Drivetrain, trim, transmission, build interval, additional equipment, RPO and ECU family remain unverified; an Any Trim search does not establish every-trim fitment. Match complete VIN, original module label and current OEM catalog before replacement selection. Current ordering, supersession, availability, warranty eligibility, interchange, key functions, programming, cloning, OTA support and repair capability remain unverified. No adjacent model year, other engine or other configuration application is included. This separately qualified reference does not validate preexisting module notes or service capability flags.
TCM - Transmission Computer
TCU - 10L90 10-Speed Auto 84632
- Part number
- 84632
- Protocol / method
- J2534
- Coding required
- Yes
- Cloning supported
- Yes
- Chip / MCU
- Continental TC1797
- Notes
- Requires transmission adaptive relearn via Tech2Win or GM MDI. Use Dexron VI ATF. VIN coding mandatory.
ABS - Brake Modules
Electronic Brake Control Module (EBCM) 84 (CONTINENTAL
- Part number
- 84 (CONTINENTAL
- Notes
- GDS2 ABS/ESC initialization. 4-wheel brake bleed (pressure bleed preferred) or GDS2 automated bleed sequence after HCU-integrated EBCM replacement. Steering angle sensor zero-point calibration required - GDS2 SAS reset, then drive straight at 35+ mph on level surface. StabiliTrak warning will remain until SAS learning completes.
Wheel Speed Sensor - Front Left 13512 (APPROX)
- Part number
- 13512 (APPROX)
- Notes
- Active magnetic sensor. Torque to spec.
Wheel Speed Sensor - Front Right 13512 (APPROX)
- Part number
- 13512 (APPROX)
- Notes
- Same procedure as front left.
Wheel Speed Sensor - Rear Left 13512 (REAR VARIANT - APPROX)
- Part number
- 13512 (REAR VARIANT - APPROX)
- Notes
- Rear axle-mounted. Same procedure.
Wheel Speed Sensor - Rear Right 13512 (REAR VARIANT - APPROX)
- Part number
- 13512 (REAR VARIANT - APPROX)
- Notes
- Same procedure.
Brake Pressure Modulator (HCU) 84 (VERIFY GMDB)
- Part number
- 84 (VERIFY GMDB)
- Notes
- GDS2 automated bleed sequence strongly preferred after HCU replacement. Verify firm pedal feel - no spongy pedal before road test.
Instrument Cluster & Steering Angle Modules
Instrument Panel Cluster (IPC) 85119382
- Part number
- 85119382
- 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)
- Coding required
- Yes
- Notes
- INTEGRATED (SCM clock spring)
Connectivity & Accessories
OnStar Module 84 (VERIFY GMDB)
- Part number
- 84 (VERIFY GMDB)
- Notes
- GDS2 OnStar initialization. Active OnStar subscription required for full remote features, Super Cruise, and OTA updates. Modem VIN-tied - replacement requires GDS2 + OnStar reactivation.
Trailer Brake Controller (integrated) 23360 (APPROX)
- Part number
- 23360 (APPROX)
- Notes
- GDS2 configuration for trailer type/weight. 7-pin and 4-pin trailer connector verification. IOR gain adjustment interface.
Remote Start (OEM RKE-based) (BCM PARAMETER - RPO UF8, AP9)
- Part number
- (BCM PARAMETER - RPO UF8, AP9)
- Notes
- BCM AsBuilt parameter for remote start enable. GDS2 BCM configuration. OEM remote start via RKE 315MHz fob sequence. Verify with original key fob.
Power Running Boards (if equipped) OEM GM (84)
- Part number
- OEM GM (84)
- Notes
- BCM controls power boards. GDS2 BCM calibration if boards are non-responsive after BCM replacement.
Power Liftgate / Power Rear Door
- Notes
- GDS2 power liftgate module initialization after replacement. Height adjustment via IOR. Verify obstruction detection.
Gateway / Security Modules
Serial data gateway module 13542886
- Part number
- 13542886
- Notes
- Parts reference for 2021 Chevrolet Tahoe 4WD 5.3L V8. Application: Serial data gateway, separate from BCM; match VIN and original module 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.
ARCHITECTURE & CONNECTIVITY
Architecture & Connectivity
- Body Construction
- Body-on-frame; high-strength steel ladder frame; SUV body
- OBD Protocol
- ISO 15765-4 CAN (500 kbps HS-CAN)
- CAN Architecture
- GMLAN (HS-CAN + MS-CAN), Ethernet backbone on select modules; OBD2 DLC Pin 6/14 HS-CAN 500kbps
- Infotainment
- Chevrolet Infotainment 3 Premium - 10.2" touchscreen standard; 15" diagonal portrait display on High Country; Apple CarPlay + Android Auto
- OTA Capable
- Yes
- Infotainment Name
- Chevrolet Infotainment 3
- ECU/TCM Unlocking
- Contact us
- ECU/TCM Flashing
- Confirmed
Reviewed coverage: 2021 - 5.3L V8 EcoTec III 16v (L84), 6.2L Ecotec III V8 (L87).
Confirm the exact engine, ECU, and any prerequisite access method before service.
OPENPILOT / COMMA.AI
Openpilot Compatibility
Not Supported
Not supported - tahoe not in openpilot support tree
Not in openpilot support tree as of April 2026.
FREQUENTLY ASKED QUESTIONS
FAQ
How much does ADAS calibration cost for a 2021 Chevrolet Tahoe?
ADAS calibration pricing for a 2021 Chevrolet Tahoe depends on which of its 7 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 Surround View Camera System (4-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 2021 Chevrolet Tahoe?
Yes. The 2021 Chevrolet Tahoe 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: 13518546. Mobile diagnosis and programming are available in DFW, and mail-in module service is available nationwide. 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 2021 Chevrolet Tahoe?
After windshield replacement on a 2021 Chevrolet Tahoe, Forward Camera (Monocular), Forward Radar (77GHz), Surround View Camera System (4-camera), HD Rear Camera, and Super Cruise Camera/Sensor Suite (High Country RPO KSG) 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 module service is available nationwide for eligible module work.
How long does a 2021 Chevrolet Tahoe module service take?
Most 2021 Chevrolet Tahoe onsite jobs are typically scheduled within 24-48 hours once vehicle readiness, access, and route timing are confirmed. This vehicle has roughly 30 programmable modules documented in our database (7 ECU, 5 BCM, 1 TCU, 6 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 service is available nationwide.
Do you cover the 2021 Chevrolet Tahoe on-site, or is this mail-in only?
We run a mobile unit across the DFW Metroplex for on-vehicle work (ADAS calibration, post-repair recoding, and supported module work). Mail-in module service is available nationwide. Quote the work and we will confirm the active service path for the 2021 Chevrolet Tahoe. Do not ship a module unless support confirms next steps.
What kind of warranty do you offer on 2021 Chevrolet Tahoe programming?
Every programming, cloning, and calibration job on the 2021 Chevrolet Tahoe 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.
Which modules on a 2021 Chevrolet Tahoe can you actually service?
We program, clone, repair, or replace the full programmable-module stack on a 2021 Chevrolet Tahoe. For this vehicle our database documents:
- 7 engine control (ECU/PCM)
- 1 transmission control (TCU/TCM)
- 5 body control (BCM and related)
- 6 ABS / brake control (EBCM)
- 3 immobilizer / security
- 2 key & fob
- 1 instrument cluster (IPC)
- 1 steering angle sensor (SAS)
- 7 ADAS module
Infotainment on this platform: Chevrolet Infotainment 3. Send the VIN and the operations performed and we will confirm support and pricing.
OTHER CHEVROLET MODELS
Additional Module Part Numbers
Additional OEM-sourced part numbers for the 2021 Chevrolet Tahoe 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, 84, 84495
- ECU / PCM Part Numbers
- 12711353
- BCM / Body Module Part Numbers
- 13548775
- TCU / TCM Part Numbers
- 84632
- SRS / Airbag Module Part Numbers
- 13518546, 84396838, 84396837
- ABS / EBCM Part Numbers
- 84528
- Instrument Cluster (IPC) Part Numbers
- 85119382
- Transmission Control Module (TCM) Part Numbers
- 84632
- Gateway / Security Module Part Numbers
- 13542886
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.
Hit a security wall? We've got the keys.
1-year unlimited warranty on every flash and calibration.
Matching catalog references
Other vehicles with matching part references
These pages list a matching part reference in the same module category. This does not confirm interchangeability. Verify the complete part number, suffix, VIN and build before selecting a replacement.
Finish the repair
Need help finishing this repair?
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.