GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

1

Did you perform the Lighting Systems Diagnostic Check?

Go to Step 2

Go to Diagnostic System Check - Lighting Systems

2

Inspect the RT HDLP fuse for an open.

Is the fuse open?

Go to Step 3

Go to Step 4

3

Test CKT 640 between the right headlamp assembly and the underhood fuse/relay center for a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Was a condition found and corrected?

System OK

Go to Step 6

4

Test CKT 640 for an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Was a condition found and corrected?

System OK

Go to Step 5

5

Inspect for poor connections at the right headlamp assembly. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

System OK

Go to Step 7

6

Replace the RT HDLP fuse.

Is the repair complete?

System OK

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7

Replace the right headlamp bulb. Refer to Headlamp Bulb Replacement .

Is the repair complete?

System OK

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