Park, License, and Tail Lamps Inoperative
WARNING: This page is about a different car, the 2007 Hummer H2. However, it is still accessible from the selected car via links, so may be relevant.
Park, License, and Tail Lamps Inoperative
| Step | Action | Yes | No |
|---|---|---|---|
| Schematic Reference: Exterior Lights Schematics Connector End View Reference: Lighting Systems Connector End Views or Data Communication 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 park, license and tail lamps are inoperative. Do the park, license and tail lamps operate normally? |
Go to Testing for Intermittent Conditions and Poor Connections | Go to Step 3 |
| 3 | Are all park, license, and tail lamps inoperative? | Go to Step 6 | Go to Step 4 |
| 4 | Test the supply circuit of the inoperative lamp for high resistance or an open. Refer to Circuit Testing
and Wiring Repairs
. Did you find and correct the condition? |
Go to Step 15 | Go to Step 5 |
| 5 | Test the ground circuit of the inoperative lamp for high resistance or an open. Refer to Circuit Testing
and Wiring Repairs
. Did you find and correct the condition? |
Go to Step 15 | Go to Step 11 |
| 6 |
|
Go to Step 12 | Go to Step 7 |
| 7 | Use the scan tool to check the body control module (BCM) parklamp switch input data. Does the scan tool indicate a park lamps ON request signal? |
Go to Step 10 | Go to Step 8 |
| 8 | Test for an open or high resistance in the park lamp switch signal circuit. Refer to Circuit Testing
and Wiring Repairs
. Did you find and correct the condition? |
Go to Step 15 | Go to Step 9 |
| 9 | Inspect for poor connections at the harness connector of the headlamp switch. Refer to Circuit Testing
and Wiring Repairs
. Did you find and correct the condition? |
Go to Step 15 | Go to Step 13 |
| 10 | Inspect for poor connections at the harness connector of the BCM. Refer to Circuit Testing
and Wiring Repairs
. Did you find and correct the condition? |
Go to Step 15 | Go to Step 14 |
| 11 | Replace the inoperative bulb. Did you complete the replacement? |
Go to Step 15 | - |
| 12 | Replace the park lamp relay. Refer to Relay Replacement (Attached to Wire Harness)
or Relay Replacement (Within an Electrical Center)
. Did you complete the repair? |
Go to Step 15 | - |
| 13 | Replace the headlamp switch. Refer to Headlamp Switch Replacement . Did you complete the repair? |
Go to Step 15 | - |
| 14 | Replace the BCM. Refer to Control Module References
for replacement, setup, and programming. Did you complete the replacement? |
Go to Step 15 | - |
| 15 | Operate the system in order to verify the repair. Did you correct the condition? |
System OK | Go to Step 3 |