GM Service Manual Online
For 1990-2009 cars only

Fog Lamp Indicator Inoperative

Step

Action

Value(s)

Yes

No

DEFINITION: This test assumes that the fog lights and all other lighting systems are working properly. If there are other lighting issues go to the appropriate system check for that system.

1

Was the Fog Lights System Check performed?

--

Go to Step 2

Refer to Fog Lights System Check

2

  1. Disconnect the fog lamp switch.
  2. Turn the ignition switch to the RUN position.
  3. Turn the headlamp switch to the PARK position.
  4. Connect a test light between the fog lamp switch harness connector terminals C and B.

Does the test lamp light?

--

Go to Step 4

Go to Step 3

3

Locate and repair open or poor connection in CKT 2234 (Front Fog Lamp Switch), or CKT 34 (Rear Fog Lamp Switch) between the body relay block (Front Fog Lamps) or the underhood fuse block (Rear Fog Lamps) and the fog lamp switch

Is the repair complete?

--

Refer to Fog Lights System Check

--

4

Replace the fog lamp switch. Refer to Fog Lamp Switch Replacement or Rear Fog Lamp Switch Replacement .

Is the repair complete?

--

Refer to Fog Lights System Check

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