Circuit/System Testing

WARNING: This page is about a different car, the 2008 GMC Sierra, 2008 GMC Cab & Chassis Sierra, 2008 Chevrolet Silverado, and 2008 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

C0131 00 or 5A

Apply and release brake pedal. Verify brake lamps operate properly.
- If brake lamps do not operate properly, refer to Symptoms - Lighting
Replace EBCM/BPMV assembly.

C0131 3A or 4B

Verify DTC C0131 3A is not set.

If DTC is set, perform the special function, Brake Pressure Sensor Calibration.