GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you perform Fog Lights System Check?

--

Go to Step 2

Go to Fog Lights System Check

2

Do the park lamps operate properly?

--

Go to Step 3

Go to Exterior Lights System Check

3

Disconnect the fog lamp switch connector.

Do the fog lamps turn off?

--

Go to Step 7

Go to Step 4

4

Disconnect the lamp control module (LCM) connector C1.

Do the fog lamps turn off?

--

Go to Step 8

Go to Step 5

5

Remove the fog lamp enable relay position C from the engine compartment fuse block.

Do the fog lamps turn off?

--

Go to Step 9

Go to Step 6

6

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

Is the repair complete?

--

Go to Fog Lights System Check

--

7

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

Is the repair complete?

--

Go to Fog Lights System Check

--

8

Repair the short to battery positive voltage (B+) in CKT 317 (YEL). Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Fog Lights System Check

--

9

Replace the fog lamp enable relay position C in the engine compartment fuse block.

Is the repair complete?

--

Go to Fog Lights System Check

--