GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Was the Fog Lights System Check performed?

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Go to Step 2

Go to Fog Lights System Check

2

  1. Disconnect the rear fog lamp switch connector.
  2. Connect a test lamp from rear fog lamp switch connector cavity B to B+.

Did the test lamp light?

--

Go to Step 3

Go to Step 4

3

Inspect for an open in CKT 10 (YEL) between rear fog lamp switch cavity D and splice S250.

Is there an open wire?

--

Go to Step 5

Go to Step 6

4

Repair the open in CKT 150 (BLK) between the rear fog lamp switch and ground G201.

Is the repair complete?

--

Go to Fog Lights System Check

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5

Repair the open in CKT 10 (YEL) between rear fog lamp switch cavity D and splice S250.

Is the repair complete?

--

Go to Fog Lights System Check

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6

Replace the rear fog lamp switch.

Is the repair complete?

--

Go to Fog Lights System Check

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