Troubleshooting wiper motor?

2007 BUICK RENDEZVOUS

100,000 MILES • 2WD • AUTOMATIC

MARK CAVINEE

MEMBER
36 POSTS

Hi again Ken: Here is the latest problem with my son's vehicle. The wiper went slow and then just quit. I checked the diode and the fuse and the power connector going to the motor. It appears that the motor is the culprit, but I am not sure.

Oct 13, 2022 at 7:52 AM

STRAILER

✓ASE Certified Mechanic
54,832 POSTS

Hi Mark,

One thing after the other huh? lol it happens. it sounds like the wiper motor is going out which is common in heavy weather areas here is how to change the wiper motor out and the wiring diagrams so you can confirm the failure by checking for twelve volts and ground at the motor. With the switch on high the grey wire should have 12 volts (key on).

https://www.2carpros.com/articles/how-to-use-a-voltmeter

Check out the images (below). Please let us know if you need anything else to get the problem fixed.

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Oct 13, 2022 at 11:46 AM

Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.