Conditions For Running DTC
WARNING: This page is about a different car, the 2002 Oldsmobile Bravada, 2002 GMC Envoy XL, 2002 GMC Envoy, and 2002 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
- The ignition switch is in the crank or run position.
- DTC P1635 is not set.
- The ignition voltage is greater than 5.23 volts.