Conditions For Running DTC
WARNING: This page is about a different car, the 2003 Oldsmobile Bravada, 2003 GMC Envoy XL, 2003 GMC Envoy, and 2003 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
- The ignition switch in the crank or run position.
- DTC P1635 is not set.
- The ignition voltage is more than 5.23 volts.