Test Description
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.
The numbers below refer to the step numbers on the diagnostic table.
- 2: Tests the roof for proper operation. If the roof sticks or binds, this condition must be repaired first.
DTC B3973 Diagnostic Test
| Step | Action | Yes | No |
|---|---|---|---|
| Schematic Reference: Power Sunroof Schematics Connector End View Reference: Power Roof Systems Connector End Views |
|||
| 1 | Did you perform the Power Roof Diagnostic System Check? | Go to Step 2 | Go to Diagnostic System Check - Power Roof |
| 2 | Inspect the roof for a sticking or binding condition. Did you find and correct the condition? |
Go to Step 6 | Go to Step 3 |
| 3 | Test the power roof motor control circuits for a short to ground or an open. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 6 | Go to Step 4 |
| 4 | Inspect for poor connections at the harness connector of the power roof motor. 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 6 | Go to Step 5 |
| 5 |
|
Go to Step 6 | - |
| 6 |
|
Go to Step 2 | System OK |