Power Door Locks Inoperative - Endgate/Liftgate
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2004 Oldsmobile Bravada, 2004 GMC Envoy XUV, 2004 GMC Envoy XL, 2004 GMC Envoy, and 2004 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
Power Door Locks Inoperative - Endgate/Liftgate
| Step | Action | Yes | No |
|---|---|---|---|
| Schematic Reference: Door Lock/Indicator Schematics Connector End View Reference: Power Door Systems Connector End Views or Body Rear End Connector End Views in Body Rear End |
|||
| 1 | Did you perform the Door Systems Diagnostic System Check? | Go to Step 2 | Go to Diagnostic System Check - Door Systems |
| 2 | Activate the door lock switches to the lock and unlock positions. Does the rear lift gate lock actuator lock and unlock? |
Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
| 3 |
|
Go to Step 4 | Go to Step 6 |
| 4 |
|
Go to Step 5 | Go to Step 7 |
| 5 |
|
Go to Step 9 | Go to Step 8 |
| 6 | Test for an open or short to ground in the door lock actuator lock circuit. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 12 | Go to Step 8 |
| 7 | Test for an open or short to ground in the door lock actuator unlock circuit. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 12 | Go to Step 8 |
| 8 | Inspect for poor connections at the harness connector of the lift gate module. 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 12 | Go to Step 10 |
| 9 | Inspect for poor connections at the harness connector of the door lock actuator. 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 12 | Go to Step 11 |
| 10 |
IMPORTANT:
Perform the set up procedure for the lift gate module. Replace the lift gate module. Refer to Liftgate Control Module Replacement
in Body Rear End.Did you complete the repair? |
Go to Step 12 | - |
| 11 | Replace the appropriate door lock actuator. Refer to Lock Actuator Replacement - Front Door . Did you complete the repair? |
Go to Step 12 | - |
| 12 | Operate the system in order to verify the repair. Did you correct the condition? |
System OK | Go to Step 2 |