Conditions for Running the DTC
WARNING: This page is about a different car, the 2002 GMC Safari and 2002 Chevrolet Astro. However, it is still accessible from the selected car via links, so may be relevant.
- The battery voltage must be between 9 and 16 volts.
- Ignition switch in the RUN position.
- The headlamp and panel dimmer switch must be turned to the ON position or the ambient light sensor must be in the DARK state with the headlamp and panel dimmer switch in the AUTO position.
- The park brake must be released.