Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Power Windows Inoperative - Express Down Function
2004 Pontiac GTO StandardSECTION Power Windows Inoperative - Express Down Function
Power Windows Inoperative - Express Down Function
| Step | Action | Yes | No |
|---|---|---|---|
| Schematic Reference: Power Window Schematics | |||
| 1 | Did you review the operation and perform the necessary inspections? | Go to Step 2 | Go to Power Windows Description and Operation |
| 2 | Verify that the inoperative power windows express down function fault is present. Does the power windows express down function operate normally? |
Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
| 3 | Inspect for poor connections at the harness connector of the body control module (BCM). Refer to Testing for Intermittent Conditions and Poor Connections
and to Connector Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 5 | Go to Step 4 |
| 4 | With the ignition ON, and all connectors attached, probe the power window relay switch feed circuit at the BCM with a test lamp connected to a good ground. Does the test lamp illuminate? |
Go to Step 6 | Go to Step 5 |
| 5 | Repair an open in the power window relay switch feed circuit. Refer to Wiring Repairs
in Wiring Systems. Did you complete the repair? |
Go to Step 7 | - |
| 6 | Replace the BCM. Refer to Body Control Module Replacement
in Body Control Systems. Did you complete the repair? |
Go to Step 7 | - |
| 7 | Operate the system in order to verify the repair. Did you correct the condition? |
System OK | Go to Step 2 |
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.