GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 1999 🢒 Century (China) (CNG) 🢒 Body and Accessories 🢒 Lighting Systems 🢒 Fog Lights System Check

Step

Action

Normal Result(s)

Abnormal Result(s)*

1
  1. Turn the ignition switch to the RUN position.
  2. Pull the headlamp switch to the HEAD position.
  3. Toggle the headlamp dimmer switch to the LOW position.
  4. Press the front fog lamp switch to the ON position.
    • Both front fog lamps are ON.
    • The front fog lamp switch indicator is ON.

2

Press the front fog lamps to the OFF position

The front fog lamps are off.

Fog Lamps Always On

3

Press the rear fog lamp switch to the ON position
    • Both rear fog lamps are ON.
    • The rear fog lamp switch indicator is ON.

4

Press the rear fog lamps to the OFF position.

The rear fog lamps are off.

Fog Lamps Always On

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