1. Check the Basics
* Fluid Level: Ensure the washer fluid reservoir is full.
* Fuse: Look for a blown fuse related to the washer system in your fuse box (check your owner's manual for the correct fuse).
* Pump Operation: With the key in the "On" position, press the washer lever. Listen closely for the pump motor running. If you hear a whirring sound, but no fluid comes out, the pump might be working but the lines are blocked.
2. Inspect the Lines and Nozzles
* Frozen Lines: In cold climates, washer lines can freeze. Try running the car for a while to thaw them.
* Clogged Nozzles: Use a thin wire or needle to clear any obstructions from the windshield washer nozzles.
* Hose Connections: Inspect the hoses leading from the reservoir to the pump and from the pump to the nozzles for any kinks, cracks, or leaks.
3. Diagnose the Pump
* Visual Inspection: If the pump is accessible, visually check the pump for signs of damage or loose connections.
* Power Test: Use a test light or multimeter to verify if power is reaching the pump when the washer lever is pressed.
* Pump Replacement: If the pump is faulty, replace it. This usually involves removing the old pump and installing a new one in its place.
4. Other Possible Issues
* Worn Switch: The washer lever switch might be worn out. Replacing it can fix the issue.
* Wiring Problems: A short or broken wire in the washer circuit could cause the pump to not work. Inspect wires for damage and make repairs as needed.
Additional Tips:
* Use a Cleaning Solution: If your washer system is not working due to a clogged line, try using a commercial washer fluid cleaner or a mix of distilled white vinegar and water (1:1 ratio).
* Consult a Repair Manual: For detailed diagrams and troubleshooting guides, refer to your Pontiac Grand Prix repair manual.
* Seek Professional Help: If you're unable to resolve the issue after checking these steps, it's best to take your car to a qualified mechanic for diagnosis and repair.
Safety Note: When working with electrical components, always disconnect the battery to prevent electrical shock.
