GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you perform the Lighting Systems Diagnostic System Check?

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Go to Step 2

Go to Diagnostic System Check - Lighting Systems

2

Verify that the front park lamps are inoperative.

Do the park lamps operate normally?

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Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

Go to Step 3

3

Inspect the FR PRK fuse in the underhood fuse block.

Is the fuse open?

--

Go to Step 6

Go to Step 4

4

  1. Remove both of the park lamp bulbs.
  2. Inspect the bulbs for open or shorted filaments.

Does either bulb have an open or shorted filament?

--

Go to Step 5

Go to Step 7

5

Replace the defective bulb.

Is the repair complete?

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Go to Step 8

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6

Locate and repair the short to ground in CKT 2309 (BRN). Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

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Go to Step 8

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7

Locate and repair the open or high resistance in CKT 2309 (BRN) or the ground circuit. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

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Go to Step 8

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8

Operate the system in order to verify the repair.

Did you correct the condition?

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System OK

Go to Step 3