GM Service Manual Online
For 1990-2009 cars only

The dome lamp override button is located to the left of the steering column on the instrument panel.

Press to turn the dome lamps off. The dome lamps will remain off when a door is open. This overrides the illuminated entry feature unless the remote keyless entry transmitter is used to unlock the vehicle.

To return the lamps to automatic operation, press again. The dome lamps will come on when any door is opened.