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

Verify the fog lamp indicator is inoperative.

Does the fog lamp indicator operate normally?

Go to Testing for Intermittent Conditions and Poor Connections

Go to Step 3

3

Do the fog lamps operate normally?

Replace the fog lamp switch. Refer to Headlamp Switch Replacement.

Go to Symptoms - Lighting Systems.