GM Service Manual Online
For 1990-2009 cars only

Instrument Panel Brightness

This feature controls the instrument panel lights.

The control for this feature is located on the exterior lamps control. Your parking lamps must be on for this feature to work. Turn the control clockwise to brighten the lights or counterclockwise to dim them.

Courtesy Lamps

When any door is opened, several lamps come on. These lamps are courtesy lamps. They make it easy for you to enter and leave your vehicle. You can also turn these lamps on by turning the exterior lamps control all the way clockwise.

Some of the lamps have switches so you can turn them on, even when the doors are closed. These lamps are reading lamps.

Entry Lighting

Your vehicle may be equipped with courtesy lamps that will come on and stay on for a set time whenever you press UNLOCK on the remote keyless entry transmitter (if equipped).

If you open a door, the lamps will stay on while it's open and then turn off automatically about 25 seconds after you close it. If you press UNLOCK and don't open a door, the lamps will turn off after about 40 seconds.

Entry lighting includes a feature called theater dimming. With theater dimming, the lamps don't just turn off at the end of the delay time. Instead, they slowly dim after the delay time until they go out. The delay time is canceled if you turn the ignition key to ON or press the power door lock switch. The lamps will dim right away.

When the ignition is on, illuminated entry is inactive, which means the courtesy lamps won't come on unless a door is opened.

Delayed Entry Lighting

Delayed entry lighting illuminates the interior for a period of time after all the doors have been closed.

The ignition must be off for delayed entry lighting to work. Immediately after all the doors have been closed, the delayed entry lighting feature will continue to work until one of the following occurs:

    • The ignition is moved to ON,
    • the doors are locked, or
    • an illumination period of 25 seconds has elapsed.

If during the illumination period a door is opened, the timed illumination period will be canceled and the interior lamps will remain on because a door is open.

Delayed Exit Lighting

This feature illuminates the interior for a period of time after the key is removed from the ignition.

The ignition must be off for delayed exit lighting to work. When the key is removed, interior illumination will activate and remain on until one of the following occurs:

    • The ignition is moved to ON,
    • the power door locks are activated, or
    • an illumination period of 25 seconds has elapsed.

If during the illumination period a door is opened, the timed illumination period will be canceled and the interior lamps will remain on because a door is open.

Parade Dimming

The instrument panel has an added feature called parade mode. This feature prohibits the dimming of your instrument panel displays during the daylight while the headlamps are on so that you'll still be able to see the displays.

Reading Lamps

Your vehicle may be equipped with reading lamps that are located on the assist handles in the headliner. These lamps and the interior courtesy lamps come on when any door is opened. Press the lens to turn them on. Press it again to turn them off.

Dome Lamp

If your vehicle has this feature, the dome lamp will come on when you open a door. You can also turn this lamp on by turning the exterior lamps control clockwise as far as it will go. Vehicles that have the optional sunroof do not have a dome lamp.

Battery Rundown Protection

Your vehicle has a feature to help prevent you from draining the battery in case you accidentally leave on the interior courtesy lamps, reading/map lamps, visor vanity lamps, trunk lamp or glove box lamps. If you leave any of these lamps on, they will automatically turn off after 10 minutes, if the ignition is moved to OFF. The lamps won't come back on again until you do the following:

    • Turn the ignition on, or
    • turn the exterior lamps control off, then on again.

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

Battery rundown protection will also work if the headlamps are left on. After having been left on for 10 minutes, the headlamps and the parking lamps will flash three times. They will remain on for one more minute before being turned off automatically.