Park Lamps Inoperative

WARNING: This page is about a different car, the 2004 Pontiac Aztek and 2004 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.

Step	Action	Yes	No
Schematic Reference: Interior Lights Schematics Connector End View Reference: Master Electrical Component List in Wiring Systems.
1	Did you perform the Lighting System Diagnostic System Check?	Go to Step 2	Go to Diagnostic System Check - Lighting Systems
2	Turn ON the ignition, with the engine OFF. Turn the headlamp switch to the PARK position. Do all of the park lamps illuminate?	Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems	Go to Step 3
3	Is only one lamp inoperative?	Go to Step 7	Go to Step 4
4	Disconnect the headlamp switch. Connect a test lamp between battery positive voltage and ground circuit of the park lamp switch at the headlamp connector. Does the test lamp illuminate?	Go to Step 5	Go to Step 6
5	Inspect for poor connections at the harness connector of the headlamp switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition?	Go to Step 9	Go to Step 8
6	Repair a short to battery positive voltage or an open in the park lamp switch circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair?	Go to Step 9	-
7	Repair the open in the inoperative park lamp power supply circuit or ground circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair?	Go to Step 9	-
8	Replace the headlamp switch. Refer to Headlamp Switch Replacement . Did you complete the replacement?	Go to Step 9	-
9	Operate the system in order to verify the repair. Did you correct the condition?	System OK	Go to Step 3