DTC will set when the following conditions are present:
WARNING: This page is about a different car, the 1997 GMC Savana, 1997 Chevrolet Chevy Van, and 1997 Chevrolet Chevy Express. However, it is still accessible from the selected car via links, so may be relevant.
- Vehicle speed is at least one MPH.
- Engine speed is less than 5800 RPM.
- Engine load is not greater than 89.9 percent.
- DTC P0300 is set and requesting MIL on.
- Rough road indicator not being sent by EBCM.