Power Sunroof Inoperative
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2007 GMC Yukon XL, 2007 GMC Yukon, 2007 Chevrolet Tahoe, 2007 Chevrolet Suburban, and 2007 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
Power Sunroof Inoperative
| Step | Action | Yes | No |
|---|---|---|---|
| Schematic Reference: Sunroof Schematics Connector End View Reference: Sunroof Connector End Views |
|||
| 1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | Go to Diagnostic System Check - Vehicle |
| 2 | Perform the sunroof re-initialization. Refer to Sunroof Motor/Actuator Initialization/Teach Process . Does the system operate normally? |
Go to Testing for Intermittent Conditions and Poor Connections | Go to Step 3 |
| 3 |
|
Go to Step 4 | Go to Step 11 |
| 4 |
|
Go to Step 9 | Go to Step 5 |
| 5 | Is battery voltage present on any of the switch signal circuits? | Go to Step 10 | Go to Step 6 |
| 6 |
|
Go to Step 7 | Go to Step 12 |
| 7 |
|
Go to Step 8 | Go to Step 13 |
| 8 | Connect a test lamp from battery voltage to the ground circuit terminal in the sunroof motor/actuator harness connector. Does the test lamp illuminate? |
Go to Step 16 | Go to Step 14 |
| 9 | Connect a fused jumper wire from each of the switch signal circuits in the switch harness connector to ground. Does the sunroof operate using a fused jumper wire in place of the switch? |
Go to Step 15 | Go to Step 16 |
| 10 | Test the faulted switch signal circuit for an open or short to ground. Refer to Circuit Testing
and Wiring Repairs
. Did you find and correct the condition? |
Go to Step 20 | Go to Step 16 |
| 11 | Repair the sunroof switch ground circuit for an open or high resistance. Refer to Circuit Testing
and Wiring Repairs
. Is the repair complete? |
Go to Step 20 | - |
| 12 | Repair the sunroof motor/actuator battery supply circuit for an open or short to ground. Refer to Circuit Testing
and Wiring Repairs
. Is the repair complete? |
Go to Step 20 | - |
| 13 | Repair the sunroof motor/actuator ignition signal circuit for an open or short to ground. Refer to Circuit Testing
and Wiring Repairs
. Is the repair complete? |
Go to Step 20 | - |
| 14 | Repair the sunroof motor/actuator ground circuit for an open or high resistance. Refer to Circuit Testing
and Wiring Repairs
. Is the repair complete? |
Go to Step 20 | - |
| 15 | Inspect for a poor connections at the sunroof switch harness connector. Refer to Testing for Intermittent Conditions and Poor Connections
and Connector Repairs
. Did you find and correct the condition? |
Go to Step 20 | Go to Step 17 |
| 16 | Inspect for a poor connection at the sunroof motor/actuator harness connector. Refer to Testing for Intermittent Conditions and Poor Connections
and Connector Repairs
. Did you find and correct the condition? |
Go to Step 20 | Go to Step 18 |
| 17 | Replace the sunroof switch. Refer to Sunroof Switch Replacement . Did you complete the replacement? |
Go to Step 20 | - |
| 18 | Replace the sunroof motor. Refer to Control Module References
for replacement, setup, and programming. Did you complete the replacement? |
Go to Step 20 | - |
| 20 | Operate the system in order to verify the repair. Did you correct the condition? |
System OK | Go to Step 2 |