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.
Circuit/System Verification
Refer to Diagnostic Aids before performing Circuit/System Verification.
- Ignition ON.
- Verify the K43 Power Steering Control Module (if equipped) and the K17 Electronic Brake Control Module do not have any DTCs set.
- If any DTC is set
Refer to Diagnostic Trouble Code (DTC) List - Vehicle .
- Go to next step: If the DTC is not set
- If any DTC is set
- Verify that DTC B356A is not set.
- If the DTC is set
Refer to DTC B356A (Chevrolet) , or DTC B356A (GMC) .
- Go to next step: If the DTC is not set
- If the DTC is set
- Verify that DTC B0987 is not set.
- If the DTC is set
Refer to DTC B0987 (GMC) , or DTC B0987 (Chevrolet) .
- Go to next step: If the DTC is not set
- If the DTC is set
- Verify that DTC B1011 is not set.
- If the DTC is set
Refer to DTC B1011 .
- Go to next step: If the DTC is not set
- If the DTC is set
- Verify the scan tool Frontview Camera Disable History 1 parameter does not have a current Malfunction
- If the parameter is Malfunction
Refer to Diagnostic Aids.
- Go to next step: If the parameter is Normal
- If the parameter is Malfunction
- Verify the scan tool Frontview Camera System Status parameter is Normal.
- If the parameter is Undefined or Malfunction
Refer to Diagnostic Aids.
- Go to next step: If the parameter is Normal
- If the parameter is Undefined or Malfunction
- Verify the scan tool Lane Departure Warning Switch Status parameter changes between Open and Closed while pressing and releasing the lane departure warning switch.
- If the parameter does not change between Open and Closed
Refer to DTC B356A (Chevrolet) , or DTC B356A (GMC) .
- Go to next step: If the parameter changes between Open and Closed
- If the parameter does not change between Open and Closed
- Verify the scan tool Lane Departure Warning Switch indicator turns on and off while pressing and releasing the lane departure warning switch.
- If the indicator does not turn on and off
Refer to DTC B0987 (GMC) , or DTC B0987 (Chevrolet) .
- Go to next step: If the indicator turns on and off
- If the indicator does not turn on and off
- Verify the area of the B174W Frontview Camera - Windshield for contamination.
- If it needs to be cleaned
Clean the windshield.
- Go to next step: If it does not need to be cleaned
- If it needs to be cleaned
- All OK.
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.
Rather have a pro handle this?
A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.
No obligation. See pricing before you book.