GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

Schematic Reference: Fog Lights Schematics

Connector End View Reference: Master Electrical Component List

1

Did you perform the Diagnostic System Check - Vehicle?

Go to Step 2

Go to Diagnostic System Check - Vehicle

2

  1. Turn ON the ignition, with the engine OFF.
  2. Turn ON the low beam headlamps.
  3. Turn ON the front fog lamps.
  4. Observe the front fog lamp indicator.
  5. Turn the front fog lamps ON and OFF.

Did the front fog lamp indicator operate properly?

Go to Testing for Intermittent Conditions and Poor Connections

Go to Step 3

3

Did the fog lamps operate properly?

Go to Step 4

Go to Fog Lamps Always On

4

Inspect for poor connections at the harness connector of the instrument panel cluster (IPC). Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .

Did you find and correct the condition?

Go to Step 6

Go to Step 5

5

Replace the IPC. Refer to Control Module References for replacement, setup, and programming.

Did you complete the repair?

Go to Step 6

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6

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2