GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Oldsmobile 🢒 1998 🢒 Silhouette Ext. 🢒 Body and Accessories 🢒 Lighting Systems 🢒 Exterior Lights System Check

Step

Action

Normal Result(s)

Abnormal Result(s)*

1

Turn the headlamp/instrument panel (IP) lamp dimmer switch to the PARK position.

The following lamps light:

    • The license plate lamps
    • The taillight lamps
    • The front side marker lamps
    • The front parking lamps

Park Lamps Inoperative

2
  1. Turn the ignition switch to the RUN position.
  2. Move the turn signal switch to the left position and to the right position.

The turn signal lamps flash on and off continuously for each side.

Turn Signal Lamps Inoperative

3

Turn the hazard lamp switch to the ON position.
    • The following lamps continuously flash:
       - The front turn signals
       - The rear turn signals
    • The front marker lamps continuously flash on and off.

Hazard Lamps Inoperative

4
  1. Turn the hazard switch to the OFF position.
  2. Turn the headlamp/instrument panel (IP) lamp dimmer switch to the PARK position.
  3. Depress the brake pedal.

The following lamps light:

    • The front side marker lamps
    • The front parking lamps
    • The taillight lamps
    • The license plate lamps
    • The center high-mounted stop lamp (at the maximum intensity)
    • The stop lamps (at the maximum intensity)

Stop Lamps Inoperative

5

Release the brake pedal.
    • The following lamps light:
       - The front side marker lamps
       - The front parking lamps
       - The taillight lamps
       - The license plate lamps
    • The following lamps do not light:
       - The center high-mounted stop lamp
       - The stop lamps

Stop Lamps Always On

6

Turn the head lamp/IP dimmer switch to the OFF position.

The following lamps do not light:

    • The front side marker lamps
    • The front parking lamps
    • The taillight lamps
    • The license plate lamps

Park Lamps Always On

7
  1. Release the park brake.
  2. Turn the ignition switch to the RUN position.

The daytime running lamps (DRL) light.

    • In daylight, the front turn signal lamps light without flashing
    • In low ambient light:
      • The front turn signal lamps are off
      • The low beam headlamps light
      • The parking lamps light

Daytime Running Lamps (DRL) Headlamps Inoperative

8
  1. Turn the ignition to the OFF position.
  2. Set the parking brake.
  3. Turn the ignition to the RUN position.

The DRL is OFF.

Daytime Running Lamps (DRL) Headlamps Inoperative

* Refer to the appropriate symptom diagnostic table for the applicable abnormal result.