GM Service Manual Online
For 1990-2009 cars only

The vehicle has a feature to help prevent the battery from draining in case the interior, trunk, or underhood lamps are accidentally left on. If any of these lamps are left on while the ignition is in OFF, they will automatically turn off after 10 minutes. The lamps will not come back on again until any of the following are done:

    • The ignition is turned to RUN or ACC.
    • The interior lamps control is turned completely to the right, then back slightly to the left.
    • Open, or close and reopen, a door that is closed.

If the vehicle has less than 15 miles (25 km) on the odometer, the battery saver will turn off the lamps after only three minutes.