GM Service Manual Online
For 1990-2009 cars only

Object Number: 928199  Size: B2

The exterior lamp control is located to the left of the steering wheel on the multifunction lever.

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

The exterior lamp band has four positions:

(Off): Turning the band to this position turns off all lamps.

AUTO (Automatic): Turning the band to this position sets the exterior lamps in automatic mode.

(Parking Lamp): Turning the band to this position turns on the parking lamps together with the following:

    • Sidemarker Lamps
    • Taillamps
    • License Plate Lamps
    • Instrument Panel Lights

The parking brake indicator light will come on and stay on when the parking lamps are on with the engine off and the ignition in ACCESSORY.

(Headlamps): Turning the control to this position turns on the headlamps, together with the previously listed lamps and lights.

Wiper-Activated Headlamps

This feature activates the headlamps and parking lamps after the windshield wipers have been in use for approximately six seconds.

When the exterior lamp control has been turned off or is in the parking lamp position and the wiper control is on delay, low speed or high speed, the HEADLAMPS SUGGESTED message will appear on the Driver Information Center (DIC).

When the ignition is turned off, the wiper-activated headlamps will immediately turn off.

Lamps on Reminder

A warning chime will sound if the exterior lamp control is left on in either the headlamp or parking lamp position and the driver's door is opened with the ignition off.

Daytime Running Lamps

Daytime Running Lamps (DRL) can make it easier for others to see the front of your vehicle during the day. DRL can be helpful in many different driving conditions, but they can be especially helpful in the short periods after dawn and before sunset. Fully functional daytime running lamps are required on all vehicles first sold in Canada.

The DRL system will make the front turn signal lamps come on when the following conditions are met:

    • It is still daylight and the ignition is on,
    • the exterior lamp control is in the off position and
    • the transmission is not in PARK (P).

When DRL are on, only the front turn signal lamps will be on. No other exterior lamps such as the parking lamps, taillamps, etc. will be on when the DRL are being used. Your instrument panel will not be lit up either.

When it is dark enough outside, the front turn signal lamps will turn off and normal low-beam headlamps will turn on.

When it is bright enough outside, the regular lamps will go off, and the front turn signal lamps will take over. If you start your vehicle in a dark garage, the automatic headlamp system will come on immediately. Once you leave the garage, it will take approximately one minute for the automatic headlamp system to change to DRL if it is light outside. During that delay, your instrument panel cluster may not be as bright as usual. Make sure your instrument panel brightness knob is in the full bright position. See "Instrument Panel Brightness" under Interior Lamps .

If it is dark enough outside and the exterior lamp control is off, a HEADLAMPS SUGGESTED message will display on the Driver's Information Center (DIC). This message informs the driver that turning on the exterior lamps is recommended.

Turning the exterior lamp control to off a second time, or turning on the headlamps will remove the HEADLAMPS SUGGESTED message. If the parking lamps or the fog lamps were turned on instead, the HEADLAMPS SUGGESTED message will continue to be displayed.

As with any vehicle, you should turn on the regular headlamp system when you need it.

Fog Lamps

If your vehicle has fog lamps, use them for better vision in foggy or misty conditions.

The fog lamps control is located on the multifunction lever next to the exterior lamp control.

(Fog Lamps): Turning the band to this position will turn on the fog lamps.

When you turn on the fog lamps, the fog lamp light on the instrument panel cluster will come on to indicate that the fog lamps and the parking lamps are on.

If you turn on the high-beam headlamps, the fog lamps will turn off. They will turn back on again when you switch to low-beam headlamps.

The ignition must be on for the fog lamps to operate.

Twilight Sentinel®

Twilight Sentinel® can turn your lamps on and off for you. A light sensor on top of the instrument panel makes the Twilight Sentinel® work, so be sure it is not covered.

With Twilight Sentinel® you will see the following happen:

    • When it is dark enough outside, the front turn signal lamps (DRL) will go off, and the headlamps and parking lamps will come on. The other lamps that come on with headlamps will also come on.
    • When it is bright enough outside, the headlamps will go off, and the front turn signal lamps (DRL) will come on, as long as the exterior lamp switch is in the OFF position.

If you start your vehicle in a dark garage, the automatic headlamp system will come on immediately. Once you leave the garage, it will take approximately one minute for the automatic headlamp system to change to DRL if it is light outside. During that delay, your instrument panel cluster may not be as bright as usual. Make sure your instrument panel brightness control is in full bright position. See "Instrument Panel Brightness Control" under Interior Lamps .

You can idle the vehicle with the lamps off, even when it is dark outside. First set the parking brake while the ignition is in OFF. Then start the vehicle. The lamps will stay off until you release the parking brake.

Twilight Sentinel® also provides exterior illumination as you leave the vehicle. If Twilight Sentinel® has turned on the lamps when you turn off the ignition, your lamps will remain on until:

    • The exterior lamp switch is moved from OFF to the parking lamp position, or
    • a delay time that you select has elapsed.

See Driver Information Center (DIC) to select the delay time that you want. You can also select no delay time.

If you turn off the ignition with the exterior lamp switch in the parking lamp or headlamp position, the Twilight Sentinel® delay will not occur. The lamps will turn off as soon as the switch is turned off.

As with any vehicle, you should turn on the regular headlamp system when you need it.

Exterior Lighting Battery Saver

If the manual parking lamps or headlamps have been left on, the exterior lamps will turn off as soon as the ignition is turned off or RAP is active. This protects against draining the battery in case you have accidentally left the headlamps or parking lamps on. The battery saver does not work if the headlamps are turned on after the ignition switch is turned to OFF.

If you need to leave the lamps on, use the exterior lamp control to turn the lamps back on.