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.
Use vehicle lookup when you know the year, make, and model. Use quote when the car is in front of you and the symptom matters more than the catalog page.
Check coverage by vehicle, or start with the VIN and symptoms.
Call dispatch: (945) 382-4065ADAS, Module Repair & Programming
Multiple trim levels available. ADAS feature availability varies by trim and options package. Contact us for specific trim calibration requirements.
Expert ADAS calibration, module programming, and diagnostic recovery for the 2021 Chevrolet Tahoe. On this vehicle we cover documented systems include Forward Camera (Monocular), Forward Radar (77GHz), and Blind Spot Monitor Sensor - Left (BSM), this GMT T1XX (5th Gen Full-Size SUV) platform vehicle, GM PASS-Key III+ (T1XX Gen 3) immobilizer support, Chevrolet Infotainment 3 infotainment programming. Mobile across the DFW Metroplex, mail-in nationwide for module-bench work.
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
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).
View ADAS dataDocumented 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 triggersThis page indexes 27 programmable module records across SRS, ECU, BCM, TCU/TCM, ABS, and IPC coverage.
View modulesThis page includes 11 gateway, immobilizer, or key-security records for this 2021 Chevrolet Tahoe.
View securityCore 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 sectionGM Co-Pilot360: Forward Collision Alert/Automatic Emergency Braking, Lane Change - Available; Immobilizer: GM PASS-Key III+ (T1XX Gen 3) - Standard; Platform: GMT T1XX (5th Gen Full-Size SUV) - Confirmed
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 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; Chevrolet Infotainment 3 Premium - 10.2" touchscreen standard; 15" diagonal portrait display on High Country; Apple CarPlay + Android Auto
CAN: GMLAN (HS-CAN + MS-CAN), Ethernet backbone on select modules; OBD2 DLC Pin 6/14 HS-CAN 500kbps
Choose a section to view data
Calibration required after windshield replacement, camera/radar service, or structural repair affecting sensor alignment.
Key programming requires manufacturer-level tool access.
Verify platform code matches when cross-referencing part numbers across model years.
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. Key programming and immobilizer faults - GM PASS-Key III+ (T1XX Gen 3) immobilizer; all-keys-lost supported.
Not supported - tahoe not in openpilot support tree
Not in openpilot support tree as of April 2026.
Documented for the 5th Gen T1XX - includes this 2021 model year. Open the full coverage on the generation guide.
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 and we return a number within 4 hours.
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. Bench-only or in-vehicle - both paths are supported. Send the part number and a description of what triggered the light, and we will provide a quote and ETA.
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 (DFW Metroplex) with OE target fixtures or via mail-in for the front camera/radar module.
Most 2021 Chevrolet Tahoe jobs complete same-day once the vehicle or module arrives. This vehicle has roughly 33 programmable modules documented in our database (6 ECU, 4 BCM, 1 TCU, 6 ABS, plus IPC/SAS/gateway/accessory). Module-bench work (ECU clones, BCM reprograms, SRS resets) ships back inside 1-3 business days including return shipping. ADAS calibration is on-site for DFW or mail-in for the front module.
Both. We run a mobile unit across the DFW Metroplex for on-vehicle work (ADAS calibration, key programming, IMMO pairing, post-repair recoding) and a mail-in bench for module-only jobs (ECU cloning, BCM repair, SRS reset, TCU clone). Quote the work and we will tell you which path is right for the 2021 Chevrolet Tahoe.
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.
Yes - all-keys-lost is supported on the 2021 Chevrolet Tahoe. 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.
We program, clone, repair, or replace the full programmable-module stack on a 2021 Chevrolet Tahoe. For this vehicle our database documents:
Infotainment on this platform: Chevrolet Infotainment 3. Send the VIN and the operations performed and we will confirm support and pricing.
Send your VIN and we'll confirm exact module support and pricing for your specific vehicle within 4 hours.
1-year unlimited warranty on every flash and calibration.
Shared module fitment
These vehicles use one or more of the same replacement modules indexed for this vehicle.