Circuit/System Verification
WARNING: This page is about a different car, the 2019 GMC Savana 3500, 2019 GMC Savana 2500, 2019 Chevrolet Express 3500, and 2019 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition - On / Vehicle - In Service Mode
- Verify that no DTCs are set.
- If any DTC is set
Refer to Diagnostic Trouble Code (DTC) List - Vehicle .
- Go to next step: If no DTCs are set
- If any DTC is set
- Verify the scan tool Frontview Camera Disable History 1 - 4 parameters does not have a current Malfunction. Refer to Control Module References
for scan tool information.
- If the parameter is Malfunction
Diagnose the system that set the malfunction.
- Go to next step: If the parameter is Normal
- If the parameter is Malfunction
- Perform the scan tool control function:Lane Departure Warning Indicator - Active & Inactive
Verify the component turns On and Off:Lane Departure Warning Indicator
- If the component does not turn On and Off
Refer to: Circuit/System Testing - Test 1
- Go to next step: If the component turns On and Off
- If the component does not turn On and Off
- Press and release the switch:Lane Departure Warning Switch
Verify the scan tool parameter:Lane Departure Warning Switch Status=Active & Inactive
- If not the specified values
Refer to: Circuit/System Testing - Test 2
- Go to next step: If the specified values
- If not the specified values
- All OK.