GM Service Manual Online
For 1990-2009 cars only

Exterior Lighting

Backup Lamps

The backup lamps are incorporated into the tail lamps. The backup lamps operate with the ignition in the ON position. On a vehicle with a manual transaxle, placing the manual transaxle shift lever in R activates the backup lamps. On a vehicle with an automatic transaxle, placing the automatic transaxle control lever in R activates the backup lamps.

The following switches complete the backup lamps circuit and will turn ON the backup lamps:

    • The backup lamp switch on a vehicle with a manual transaxle
    • The transmission range switch on a vehicle with an automatic transaxle

High Mounted Stoplamp

The high mounted stop lamp operates in conjunction with the stop lamps if you press the brake pedal. On 2-door models, the stop lamp consists of 1 bulb and is at the bottom of the liftgate window. On 4-door models, the stop lamp consists of 2 bulbs and is in the center of the rear window trim panel.

Daytime Running Lamps (DRL)

The daytime running lamps (DRL) are standard equipment on all models. The DRL indicator on the instrument cluster illuminates if the DRL system is active. Operating through the low beams at an output lower than normal, the DRL system operates under the following conditions:

    • If the engine is running
    • If the parking brake is not applied
    • If the combination switch lever is in the OFF position or in the park lamps position

Object Number: 351420  Size: SH

The DRL system consists of a DRL control module (2). The DRL control module (2) is under the instrument panel, and between the brake pedal (4) and the accelerator pedal.

Park and Turn Lamps


Object Number: 351440  Size: SH

The park and turn lamp is part of the headlamp (6). The turn lamp shares a bulb (8) with the park lamp. The park and turn lamp contains a double filament bulb (8). The turn lamp illuminates if you operate the turn signals. Refer to Turn Signal Operation for details regarding the turn signal system. The park lamp lens is part of the headlamp (6). The reflector alerts approaching vehicles for safe nighttime driving. The park lamp illuminates if you activate one of the following systems:

    • The park lamps
    • The headlamps

Headlamps


Object Number: 351440  Size: SH

This vehicle has composite headlamps. Each headlamp (6) consists of a serviceable halogen bulb (3) which provides the following operations:

    • High beam operation
    • Low beam operation

Do NOT use the J 25300-B headlamp aiming kit in order to adjust the headlamps. Each headlamp has a Vehicle Headlamp Aiming Device that is built-in. For additional details regarding aiming procedures, refer to Headlamp Aiming .

Rear License Plate Lamps


Object Number: 351460  Size: SH

The rear license plate lamp (3) is in the rear bumper fascia directly over the license plate. This lamp contains one clear bulb (2) with a single filament. The rear license plate lamp bulb illuminates if you activate one of the following lamps:

    • The park lamps
    • The headlamps

Tail Lamps

The tail lamps are in the following locations:

    • Each side of the rear compartment lid on 4-door models
    • The liftgate on 2-door models

Each tail lamp consists of the following bulbs:

    • A stop lamp bulb with a double filament
    • A turn lamp bulb with a double filament
    • A backup lamp bulb
    • A rear side marker lamp bulb on 2-door models

Pressing the brake pedal will cause the stop lamp switch to close. The stop lamp bulb lights when the stop lamp switch is closed. The tail lamp bulb and the rear side marker lamp bulb illuminate if you activate one of the following systems:

    • The park lamps
    • The headlamps

The turn lamp bulbs illuminate during turn signal operation. For additional details regarding turn signal operation, refer to Turn Signal Operation.

Interior Lighting

Dome Lamp

The dome lamp is in the following locations:

    • The center of the windshield header on 2-door models
    • The center of the roof panel between the front seats on 4-door models

The dome lamp consists of the following components:

    • A clear lens
    • The dome lamp bulb
    • The dome-lamp switch

The lamp switch has 3 detents:

    • With the dome lamp switch in the door position, the dome lamp lights if the left front door is open. This happens because the door-jamb switch closes. The lamp remains ON until you close the door. This happens because the door-jamb switch is open.
    • With the dome-lamp switch in the ON position, the dome lamp illuminates, regardless of whether the door-jamb switch is open or closed.
    • If the switch is OFF, the dome lamp does not illuminate, regardless of whether the door-jamb switch is open or closed.

Rear Compartment Lamp

The rear compartment lamp is available on the 4-door models only. The rear compartment lamp is in the center of the rear window trim panel. Refer to Rear Compartment Lid Switch Replacement in Body Rear End for the replacement procedures for the rear compartment lamp switch.

Lighting Controls

Turn Signal and Headlamp Dimmer and Windshield Wiper and Washer Switch

The turn signal and headlamp dimmer and windshield wiper and washer switch is on the steering column. The switch contains the following components:

    • The hazard switch
    • Two levers

The headlamp and headlamp dimmer and turn signal switch lever is located on the left side of the steering column. The lever that controls the windshield wiper switch and the windshield washer switch lever is on the right side of the steering column. A twist-type knob on the end of the switch lever controls the operation of the following lamps:

    • The park lamps
    • The headlamps

If you activate the park lamps or the headlamps, the following components illuminate:

    • The front park lamps
    • The rear tail lamps
    • The rear side marker lamps on 2-door models
    • The license plate lamps
    • The instrument cluster
    • The automatic transaxle control position indicator bulb on a vehicle with an automatic transaxle

Move the headlamp and headlamp dimmer and turn signal switch lever forward and rearward in order to control the operation of the dimmer switch. Move the lever up and down in order to control the turn signals.

Replace the levers only as part of the SIR coil assembly. Refer to Inflatable Restraint Steering Wheel Module Coil Replacement in SIR for the replacement procedures for the combination switch.

Headlamp Dimmer Switch Operation

The headlamp and headlamp dimmer and turn signal switch lever controls the operation of the following headlamp functions:

    • The low beam operation
    • The high beam operation

Place the headlamps in the ON position. Push the lever away from the driver into the detent in order to change the headlamps from the low to the high beam operation. Move the lever toward the driver to the center position in order to return the headlamps from high beam operation to low beam operation.

Refer to Inflatable Restraint Steering Wheel Module Coil Replacement in SIR for replacement procedures for the combination switch.

Flash-to-Pass Feature

Move the lever toward the driver in order to illuminate the high-beam headlamps if the lighting system is in one of the following positions:

    • OFF
    • The park lamps setting
    • Low-beam headlamp setting

Release the lever in order to return to the center detent. This returns the system to the previous setting.

The Flash-to-Pass feature allows the driver to signal the driver of another vehicle of the intention to pass.

Hazard Lamps

The hazard switch is on the top of the steering column. The hazard switch is a part of the combination switch and controls the operation of the hazard lamp circuit. Press the hazard switch to the ON position in order to disengage the turn signal circuit through the turn relay. This engages the hazard lamp circuit. This action causes the following lamps to flash:

    • The turn indicator bulbs in the instrument cluster
    • The exterior turn lamp bulbs

The hazard lamp circuit operates regardless of the position of the ignition switch. Press the hazard switch again in order to disengage the hazard lamp circuit. This returns the turn relay to the turn signal mode.

Refer to Inflatable Restraint Steering Wheel Module Coil Replacement in SIR for replacement procedures for the combination switch.

Refer to Hazard and Turn Signal Flasher Replacement in Instrument Panel, Gauges and Console for replacement procedures for the turn relay.

IP Lamp Dimmer Control

The IP lamp dimmer control is on the left side of the instrument panel. Rotate the dimmer control clockwise in order to brighten the following components:

    • The instrument cluster
    • The radio display
    • The rear-window defogger switch, if equipped
    • The rear window wiper and the washer switch, if equipped
    • The heater control

Rotate the dimmer control counterclockwise in order to dim the same components.

If you activate the park lamps or the headlamps, the following lamps illuminate:

    • The instrument panel lamps
    • The instrument cluster lamps

Refer to Instrument Panel Lamp Dimmer Switch Replacement in Instrument Panel, Gauges and Console for the replacement procedures for the dimmer control of the instrument panel lamps.

Turn Signal Operation

The following components control the turn signal operation:

    • The turn signal lamp flasher that is in the junction block
    • The turn signal switch lever that is on the left side of the steering column

The ignition switch must be ON in order to operate the turn signals.

If making a partial turn, or if changing lanes, the driver has the option of moving the lever to a detent. The following components continue to flash as long as you hold the lever in the detent:

    • The turn lamp bulbs
    • The bulbs of the turn signal indicator in the instrument cluster

If you release the lever, the flashing cancels automatically. The detent allows you to make a lane change or a shallow turn without failing to cancel the turn signal circuit. Move the lever past the detent to the furthest up position or to the furthest down position in order to provide conventional turn signal operation.

Refer to Inflatable Restraint Steering Wheel Module Coil Replacement in SIR for replacement procedures for the turn signal switch lever.