Action Taken When the DTC Sets: P0856
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.
- The PCM sends a serial data message to the EBCM stating that the PCM has lost the ability to reduce engine torque.
- The EBCM sets DTC C0298 as a current DTC for as long as the malfunction is present.