GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Was the entire fog lights system check performed?

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Go to Step 2

Go to Fog Lights System Check

2

  1. Turn the headlamps on.
  2. Turn the headlamp dimmer switch to the low beam position.
  3. Turn the fog lamps on.
  4. Using a test light, backprobe between terminal A of the inoperative fog lamp harness connector and ground.

Does the test light illuminate?

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Go to Step 3

Go to Step 4

3

Using a test light, backprobe between the inoperable fog lamp harness connector terminal A and terminal B (Domestic) or G (Europe).

Does the test light illuminate?

--

Go to Step 5

Go to Step 6

4

Repair a poor connection or open in circuit 34 (Domestic) or 122 (Europe).

Is the repair complete?

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Go to Step 7

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5

Replace the faulty fog lamp. Refer to Front Fog Lamp Bulb Replacement

Is the repair complete?

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Go to Step 7

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6

Repair a poor connection or an open in circuit 150/250 (Domestic) or 1250 (Europe).

Is the repair complete?

--

Go to Step 7

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7

  1. Turn the ignition switch to the OFF position.
  2. Reconnect all connectors/components removed.

Have all the repairs been made?

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Go to Fog Lights System Check

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