GM Service Manual Online
For 1990-2009 cars only

Instrument Panel Brightness

When it is dark outside, you can brighten or dim your instrument panel cluster lights using the DIM knob, located to the left of the steering wheel on the instrument panel.

Turn the knob clockwise to brighten the instrument panel cluster lights and displays. Turn the knob clockwise all the way to turn on the interior courtesy lamps. Turn the knob counterclockwise to dim the instrument panel cluster lights and displays and to turn off the courtesy lamps.

Courtesy Lamps

If it is dark enough outside, when any door is opened, several lamps will come on. They make it easier for you to enter and leave the vehicle. Turn the dimmer knob all the way clockwise to turn the interior courtesy lamps on.

Entry Lighting

If it is dark enough outside and you press the button with the unlock symbol on the remote keyless entry transmitter (if equipped), the interior courtesy lamps will come on and stay on for approximately 25 seconds. The lamps will turn off immediately by pressing the button with the lock symbol on the remote keyless entry transmitter, by turning the ignition key to ON or by activating the power door locks.

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

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 or until the ignition is turned on. Locking the doors with the power door lock switch, or with the lock button on the remote keyless entry transmitter (if equipped), 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 courtesy lamps instead of immediate turn off after you remove the key from the ignition.

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.

This lighting will only be deactivated if the key is reinserted into the ignition switch or the power door locks are activated.

Parade Dimming

To activate the instrument panel backlighting during the day, turn the exterior lamp switch to the parking lamp or headlamp 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 or headlamps are on and it is dark outside.

Perimeter Lighting

When the button with the unlock symbol on the remote keyless entry transmitter (if equipped) is pressed, the DRL headlamps, parking lamps and back-up lamps will turn on if it is dark enough outside.

Personal Choice Programming

This feature can be programmed in the on or off mode for each transmitter.

If your vehicle is equipped with the Driver Information Center (DIC), you must program this feature through the DIC. See DIC Vehicle Personalization .

To turn the feature off do the following:

  1. Keep all doors closed, the vehicle in PARK (P) and the ignition on throughout this procedure.
  2. Press and hold LOCK on the power door lock switch throughout this procedure. All the doors will lock.
  3. Press the instant alarm on the transmitter. Perimeter lighting remains on at this time and the horn will chirp twice.
  4. Press the instant alarm on the transmitter again. Perimeter lighting is disabled and the horn will chirp once.
  5. Release the door lock switch. The perimeter lighting feature is now off.

To turn the feature on do the following:

  1. Keep all doors closed, the vehicle in PARK (P) and the ignition on throughout this procedure.
  2. Press and hold LOCK on the power door lock switch throughout this procedure. All the doors will lock.
  3. Press the instant alarm on the transmitter. Perimeter lighting remains off at this time and the horn will chirp once.
  4. Press the instant alarm on the transmitter again. Perimeter lighting is now enabled and the horn will chirp twice.
  5. Release the door lock switch. The perimeter lighting feature is now on.

This procedure only changes the mode for the transmitter used to change this setting. The procedure will need to be repeated for the second transmitter.

Front Reading Lamps


Object Number: 807343  Size: B3

The front reading lamps, located on the headliner, will come on as courtesy lamps when you open any of the doors while it is dark outside. They will also come on as part of the interior lighting features listed previously.

To turn on a reading lamp when the doors are closed, press either button. Press it again to turn the lamp off.

To avoid draining your vehicle's battery, be sure to turn off the reading lamps when leaving your vehicle. See "Inadvertent Power Battery Saver" later in this section for more information.

Rear Reading Lamps


Object Number: 807341  Size: B2

The rear reading lamps, located over each rear door, will come on as courtesy lamps when you open any of the doors while it is dark outside. They will also come on as part of the interior lighting features listed previously.

To turn on a reading lamp when the doors are closed, press either button. Press it again to turn the lamp 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 lamps are turned on. To restore power back 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 higher revolutions per minute (rpm) 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, fan on high speed, 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.

Monitor the battery voltage when in the BATTERY SAVER ACTIVE mode.

    • If the voltmeter remains in the shaded area (below 11 volts) when driving then have the charging system serviced immediately.
    • If the voltage increases above 12 volts then the battery needs to be recharged. Try driving on the highway with as few electrical accessories on as possible.