GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you perform the Fog lights System Check?

--

Go to Step 2

Go to Fog Lights System Check

2

Disconnect the fog lamp switch connector.

Do the fog lamps turn off?

--

Go to Step 6

Go to Step 3

3

Disconnect the lamp control module (LCM) connector C2.

Do the fog lamps turn off?

--

Go to Step 7

Go to Step 4

4

Remove the fog lamps relay from the RH IP fuse block.

Do the fog lamps turn off?

--

Go to Step 8

Go to Step 5

5

Repair the short to voltage in CKT 34 (PPL). Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Fog Lights System Check

--

6

Replace the fog lamp switch. Refer to Instrument Cluster Trim Panel Replacement .

Is the repair complete?

--

Go to Fog Lights System Check

--

7

Replace the LCM.

Is the repair complete?

--

Go to Fog Lights System Check

--

8

Replace the fog lamps relay.

Is the repair complete?

--

Go to Fog Lights System Check

--