GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

Schematic Reference: Fog Lights Schematics

1

Did you review the Exterior Lighting System Description and Operation and perform the necessary inspections?

Go to Step 2

Go to Symptoms - Lighting Systems

2

  1. Turn ON the ignition, with the engine OFF.
  2. Turn the headlamp switch to the HEAD position.
  3. Turn the headlamp dimmer switch to the LOW beam position.
  4. Place the fog lamp switch in the OFF position.

Do the fog lamps illuminate?

Go to Fog Lamps Always On

Go to Step 3

3

Observe the fog lamp indicator of the Instrument Panel Cluster (IPC).

Does the Instrument Panel Cluster (IPC) fog lamp indicator illuminate?

Go to Step 4

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

4

Important: Perform the set up procedure for the Instrument Panel Cluster (IPC).

Replace the Instrument Panel Cluster (IPC). Refer to Instrument Cluster Replacement in Instrument Panel, Gages, and Console.

Did you complete the replacement and the set up procedure?

Go to Step 5

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5

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2