GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

1

Did you perform the Lighting System Diagnostic System Check?

Go to Step 2

Go to Diagnostic System Check - Lighting Systems in Wiring Systems.

2

  1. Turn the ignition to the ON position.
  2. Press the fog lamp switch to the ON position.

Are the fog lamps on and the fog lamp indicator on?

Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems.

Go to Step 3

3

Replace the fog lamp switch.

Refer to Instrument Panel Multifunction Switch Assembly Replacement in Instrument Panel, Gauges, and Console.

Has the repair been made?

Go to Step 4

 

4

Operate the system in order to verify the repair.

Did you correct the condition?

Go to Diagnostic System Check - Lighting Systems in Wiring Systems.

Go to Step 2