GM Service Manual Online
For 1990-2009 cars only

Instrument Panel Brightness

This feature controls the brightness of the instrument panel lights.


Object Number: 822616  Size: A2

The knob for this feature is located on the driver's side of the instrument panel.

Turn the knob clockwise to brighten the instrument panel cluster lights and displays. Turn the knob counterclockwise to dim the instrument panel cluster lights and displays.

If it is day and your parking lamps are on, the instrument panel cluster lights and displays will come on at full intensity and will not be adjustable. If it is dark enough outside and your parking lamps are on, the instrument panel cluster lights and displays and the backlighting for the door switches will come on, and can also be adjusted.

Courtesy Lamps

If it is dark enough outside and the front reading lamp slider lever, located on the overhead console, is in the DOOR position, when any door is opened all of the vehicles courtesy lamps will come on. See "Front Reading Lamps" and "Rear Reading Lamps" later in this section for more information. They make it easier for you to enter and leave the vehicle. The courtesy lamps will remain on for about 25 seconds after all doors have been closed. They will then theater dim to off.

Move the front reading lamp slider lever to ON to turn on the interior courtesy lamps. When the control is moved back to either OFF or DOOR, the courtesy lamps will immediately turn off.

If the control is OFF when the doors are opened, only the lower instrument panel courtesy lamps will come on. Also, if the control is OFF when illuminated entry or delayed exit lighting are active, only the lower instrument panel courtesy lamps will be on.

If a door is left ajar, your interior lamps will turn off after 10 minutes to save your battery.

Entry Lighting

If it is dark enough outside and you press the unlock symbol on the remote keyless entry transmitter while all doors are closed, the interior courtesy lamps will come on and stay on for approximately 40 seconds. When the 40 seconds are up, the lights will automatically fade until they turn off. The lamps will turn off immediately by pressing the lock symbol on the remote keyless entry transmitter, by turning the ignition key to ON or by activating the power door locks.

Delayed Entry Lighting

When you open the door to enter your vehicle, the interior lamps will come on if it is dark enough outside. When you close the door with the ignition off, the interior lamps will stay on for 25 seconds. When the 25 seconds are up the lights will automatically fade until they turn off. Locking the doors with the power door lock switch or with the lock symbol on the remote keyless entry transmitter, will override the delayed entry lighting and the lamps will turn off immediately.

Theater Dimming

This feature allows for a three to five-second fade out of the overhead courtesy lamps instead of immediate turn off after you remove the key from the ignition. They will not fade if the interior lamps are manually turned on. The lower instrument panel courtesy lamps will not fade out.

Delayed Exit Lighting

This feature will turn on the interior lamps for 25 seconds after you remove the key from the ignition while the doors are closed and it is night. This will give you time to find the door handle or lock switches as you exit the vehicle. When the 25 seconds are up, or if the key is reinserted into the ignition, the lights will be turned off by the theater dimming system. The lamps will turn off immediately by pressing the lock symbol on the remote keyless entry transmitter, by turning the ignition key to ON or by activating the power door locks.

Parade Dimming

To activate the instrument panel backlighting during the day, turn the exterior lamps control to the parking lamp position. Dimming of the instrument panel display is not possible during daylight hours. The instrument panel display can only be adjusted when the parking lamps are on and it is dark outside.

Perimeter Lighting

When the unlock symbol on the remote keyless entry transmitter is pressed, the DRL headlamps, parking lamps and back-up lamps will turn on for approximately 25 seconds if it is dark enough outside.

This feature can be programmed to be on or off for each transmitter. You can also program how long the exterior lamps will stay on after unlocking the vehicle.

You must program this feature through the DIC. See DIC Vehicle Personalization .

Front Reading Lamps


Object Number: 822617  Size: B3

These lamps and the interior courtesy lamps will come on when you open a door. They will turn off when you turn on the ignition. If a door is left open, they will turn off after about 10 minutes.

To turn on the reading lamps when the doors are closed, press the button under the lamp you want on. Press it again to turn the lamp off.

These lamps work even when the ignition is off. To avoid draining your vehicle's battery, be sure to turn off all front and rear reading lamps when leaving your vehicle.

Rear Reading Lamps


Object Number: 822618  Size: B2

These lamps will come on when you open the doors. You can also turn them on by pressing the button on the side of the lamp. Press it again to turn them off.

Inadvertent Power Battery Saver

This feature is designed to protect your vehicle's battery against drainage from the interior lamps, trunk lamp, glove box lamp or cigarette lighters. When the ignition is turned off, the power to these features will automatically turn off after 10 minutes. Power will be restored for an additional 10 minutes if any door is opened, the trunk is opened or the courtesy lamp control is turned on. To restore power to the cigarette lighters, the ignition must be turned back to ON.

Battery Load Management

The battery load management feature is designed to monitor the vehicle's electrical load and determine when the battery is in a heavy discharge condition. During times of high electrical loading, the engine may idle at a higher rpm setting than normal to make sure the battery charges. High electrical loads may occur when several of the following are on: headlamps, high beams, fog lamps, rear window defogger, blower fan, heated seats and engine cooling fans.

If your vehicle's battery remains in a heavy discharge condition for a long period of time, the fan, rear defogger, heated seats and heated mirrors will be disabled and the DIC will display BATTERY SAVER ACTIVE. This can happen either under long periods of idling or low speed driving with high electrical loading, or in the event of a charging system fault.