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?

--

Go to Step 2

Go to Diagnostic System Check - Lighting Systems

2

Inspect the appropriate park lamp fuse in the rear fuse block for an open.

Is the fuse open?

--

Go to Step 3

Go to Step 5

3

Repair short to ground in the appropriate park lamp circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Step 4

--

4

Replace the park lamp fuse. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Step 8

--

5

  1. Turn the headlamp switch to the PARK position.
  2. Connect a test lamp from the park lamp output circuit at the rear fuse block to ground.

Does the test lamp illuminate?

--

Go to Step 7

Go to Step 6

6

Replace the rear fuse block. Refer to Relay/Fuse Center Replacement in Wiring Systems.

Is the rear fuse block replacement complete?

--

Go to Step 8

--

7

Repair open circuit in the appropriate park lamp circuit between the rear fuse block and the park lamp. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Step 8

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8

Operate the system in order to verify the repair.

Did you find and correct the condition?

--

System OK

Go to Step 2