GM Service Manual Online
For 1990-2009 cars only

The exterior lamp control is located in the middle of the turn signal/multifunction lever.

(Exterior Lamp Control): Turn the control with this symbol on it to operate the exterior lamps.

The exterior lamp control has four positions:

(Off): Turns off all lamps, except the Daytime Running Lamps (DRL).

AUTO (Automatic): Turns the exterior lamps on and off automatically depending upon how much light is available outside of the vehicle.

(Parking Lamps): Turns on the parking lamps together with the following:

    • Sidemarker Lamps
    • Taillamps
    • License Plate Lamps
    • Instrument Panel Lights
(Headlamps): Turns on the headlamps, together with the previously listed lamps and lights.