Conditions for Setting the DTC
WARNING: This page is about a different car, the 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Silverado, and 2003 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
- Valid Class 2 messages are not detected on the Class 2 serial data circuit.
- The above condition is met for approximately 3 seconds.
- The vehicle harness line, Class 2 serial data circuit, short to battery or ground or open circuit.