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.
- Verify that DTC C0277 or C0890 is not set.
- If either DTC is set
Refer to DTC C0277 or C0890 .
- Go to next step: If the DTC is not set
- If either DTC is set
- Verify the B22 Brake Pedal Position Sensor or the brake pedal are not binding causing residual brake pressure to be detected.
- If a condition is found
Repair or replace the appropriate component.
- Go to next step: If a condition is not found
- If a condition is found
- Verify the scan tool Electronic Brake Control Module Brake Pedal Position Sensor parameter changes between Inactive and Active while applying and releasing the brake pedal.
- If the parameter does not change
Refer to Symptoms - Lighting .
- Go to next step: If the parameter changes
- If the parameter does not change
- All OK, refer to Diagnostic Aids.