Conditions for Setting the DTC
WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
One of the following conditions will cause this DTC to set:
- The BCM detects a high voltage level on the control circuit of the DEFOG relay, while the relay is energized.
- The BCM detects a low voltage level or an open on the control circuit of the DEFOG relay, while the relay is not energized.