1. Check the Fuses: Start with the simplest. A blown fuse could prevent the wipers from operating correctly, including parking properly. Check your owner's manual for the fuse location and rating for the wiper motor. Replace any blown fuses.
2. Inspect the Wiper Linkage:
* Visual Inspection: Open your hood and carefully examine the wiper linkage. Look for any broken, bent, or disconnected parts. Pay close attention to the linkage arms connecting the motor to the wiper arms and the park mechanism. Rust or corrosion can also interfere.
* Manual Movement: Try gently moving the wiper arms by hand. If they're stiff or difficult to move, there might be a problem with the linkage or the motor itself.
3. Test the Wiper Motor:
* Listen for the Motor: Turn on the wipers. Can you hear the motor running? If not, it's likely faulty. If you hear clicking but no movement, it might be a seized motor or a faulty connection.
* Continuity Test (Advanced): If you're comfortable with basic electrical testing, you can use a multimeter to check for continuity in the wiper motor's wiring. This will determine if the motor itself is receiving power. (Consult a wiring diagram for your specific vehicle; improper testing can damage your electrical system).
4. Investigate the Wiper Park Mechanism:
* Location: The park mechanism is usually part of the wiper motor assembly or a separate component within the linkage system. Its precise location can vary slightly depending on the exact model of your 2000 Buick Regal. A repair manual will be very helpful here.
* Possible Issues: The mechanism might be worn out, broken, or jammed with debris. It might require lubrication (use only a recommended lubricant for this application) or replacement.
5. Consider the Wiper Switch:
While less likely, a faulty wiper switch could also contribute to the problem. If you've ruled out the other components, it's a possibility, though testing it requires more advanced electrical knowledge and tools.
Solutions:
* Lubrication: If the linkage is stiff but not broken, carefully apply a small amount of silicone-based lubricant (NOT WD-40) to the joints.
* Repair/Replacement of Linkage: If parts are broken or severely corroded, they may need repair or replacement. This may involve sourcing used parts or new ones from a junkyard or auto parts store.
* Wiper Motor Replacement: A faulty wiper motor will almost certainly require replacement. This is typically more involved and may require some mechanical skill.
* Professional Assistance: If you're not comfortable working on your car's electrical or mechanical systems, it's best to take it to a qualified mechanic.
Before you begin any work:
* Disconnect the battery's negative terminal: This is crucial for safety when working on your car's electrical system.
* Consult a repair manual: A repair manual specific to your 2000 Buick Regal will provide detailed diagrams and instructions, making the process much easier and safer. These can be found online or at auto parts stores.
Remember safety first. If you're not comfortable working on your car, seek professional help. Diagnosing this issue accurately requires careful observation and potentially some electrical testing.
