GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

Schematic Reference: Exterior Lights Schematics

Connector End View Reference: Lighting Systems Connector End Views

1

Did you perform the Diagnostic System Check - Vehicle?

Go to Step 2

Go to Diagnostic System Check - Vehicle

2

Verify that the front park lamps are inoperative.

Do the park lamps operate normally?

Go to Testing for Intermittent Conditions and Poor Connections

Go to Step 3

3

Inspect the FRT PARK LAMP fuse in the underhood fuse block.

Is the fuse open?

Go to Step 5

Go to Step 4

4

Inspect the inoperative bulbs/sockets for open or shorted filaments/terminals.

Does any lamp have an open or shorted filament/terminals?

Go to Step 7

Go to Step 6

5

Repair the short to ground in the park lamps supply voltage circuit. Refer to Wiring Repairs.

Did you complete the repair?

Go to Step 8

--

6

Repair an open or high resistance in the park lamps supply voltage circuit or ground circuit to the inoperative lamp. Refer to Wiring Repairs.

Did you complete the repair?

Go to Step 8

--

7

Replace the defective bulb/socket. Refer to Daytime Running Lamp Bulb Replacement.

Did you complete the repair?

Go to Step 8

--

8

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3