GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Was the headlight system check preformed?

--

Go to Step 3

Go to Headlight System Check

2

Was the fog lamp system check performed?

--

Go to Step 3

Go to Fog Lights System Check

3

  1. Turn the ignition switch to the ON position.
  2. Turn the headlamp switch to the HEAD position.
  3. Turn the headlamp dimmer switch to the LOW position.
  4. Turn the fog lamp switch to the ON position.
  5. Using a test light, backprobe the fog lamp switch harness connector terminal F and terminal D.

Is the test lamp on?

--

Go to Step 5

Go to Step 4

4

  1. Check for a poor connection or open in circuit 34 between the underhood accessory wiring junction block harness connector C2 terminal F6 and the fog lamp switch connector terminal F.
  2. If OK replace the underhood accessory wiring junction block. Refer to Underhood Fuse Block Replacement for service procedure.

Is the repair complete?

--

Go to Fog Lights System Check

--

5

Replace the fog lamp switch. Refer to Instrument Panel Multifunction Switch Assembly Replacement for service procedure.

Is the repair complete?

--

Go to Fog Lights System Check

--