Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2021 Chevrolet Traverse LFACTORY OEM SERVICE PROCEDURE
Section 68 (Driver Assistance Systems)
WARNING: This page is about a different car, the 2020 Cadillac CT4. However, it is still accessible from the selected car via links, so may be relevant.
- Specifications
- Schematic Wiring Diagrams
- Driver Assistance Systems Wiring Schematics
- Lane Keep Assist and Forward Collision - Module Power, Ground, and Serial Data (UEU)
- Lane Keep Assist and Forward Collision - Controls (UEU)
- Collision Alert Indicators and Safety Seat (UEU)
- Rear Cross Traffic Alert (UFG) and Side Object Detection (UKC)
- Collision Avoidance - Module Power, Ground, and Serial Data (UGN)
- Collision Avoidance - Long Range and Rear Short Range Radars (UGN)
- Driver Assistance Systems Wiring Schematics
- Diagnostic Information and Procedures
- Driver Assistance Systems Disable History Conditions
- Driver Assistance Systems Component Replacement Reference
- DTC B1386 or B1387
- DTC B1388 or B1389
- DTC B13AC
- DTC B13AD
- Diagnostic Instructions
- DTC Descriptors
- Diagnostic Fault Information
- Scan Tool Data
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Action Taken When the DTC Sets
- Conditions for Clearing the DTC
- Diagnostic Aids
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Repair Instructions
- DTC B1A04 (K124 Image Processing Module)
- DTC B1A04 (K160 Brake System Control Module)
- DTC B1B38
- DTC B1B39
- DTC B1B3A
- DTC B1B3B
- DTC P15F6
- DTC P15F7
- DTC U1604 or U1605
- DTC U3000 (B218L Side Obstacle Detection Control Module - Left or B218R Side Obstacle Detection Control Module - Right)
- DTC U3000 (B174W Frontview Camera - Windshield)
- DTC U3000 (B233B Forward Range Radar Sensor - Long Range)
- DTC U3000 (B233 Short Range Radar Sensor)
- Symptoms - Driver Assistance Systems
- Service Drivers Assist Malfunction
- Adaptive Cruise Control Malfunction
- Safety Alert Seat Malfunction
- Forward Collision Alert System Malfunction (without UGN)
- Forward Collision Alert System Malfunction (with UGN)
- Side Blind Zone Alert System Malfunction
- Lane Keep Assist System Malfunction (without UGN)
- Lane Keep Assist System Malfunction (with UGN)
- Repair Instructions
- Front Seat Lane Departure Warning Actuator Replacement
- Forward Range Radar Sensor Replacement
- Front Short Range Radar Sensor Replacement
- Rear Short Range Radar Sensor Replacement
- Image Processing Module Replacement
- Forward Collision Alert Display Replacement
- Side Obstacle Detection Control Module Replacement
- Front View Camera - Windshield Learn
- Radar Sensor Module - Long Range Learn
- Description and Operation
- Active Safety System Description and Operation (with UGN)
- Adaptive Cruise Control Description and Operation (with UGN)
- Driver Assistance Systems Configuration Reference
- Forward Collision Alert Description and Operation (with UGN)
- Forward Collision Alert Description and Operation (without UGN)
- Lane Keep Assist Description and Operation
- Safety Alert Seat Description and Operation (with A45)
- Side Blind Zone Alert Description and Operation
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.