Question about 2000 GMC Sierra
If you have a voltmeter/multimeter you can check the window relays to make sure they are actuating when you depress the button. You need to verify the power supply is regulating to the motor from teh window switches. Second thing you need to verify is that you changed not just the motor but the entire regulator assembly. no offense to some aftermarket motors but they are underpowered and produced in china, etc. They cant lift the heavier regulators in your truck that are factory regulators. Since it sounds like you are handy and replaced the motors yourself, then I woudl reopen the door panel and actuate the window switch. You will be able to see if the gears on the motor head are turning to actuate the cables on the regulator. If you dont see movement then the problem is with either the fuse assembly or power supply to the window switches. If you see movement then the issue is with bad regulators and or underpowered motors. If you purchase the motors from ebay, I would be suspicious of the motors... Good luck.
Posted on Jun 07, 2010
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Posted on Jan 02, 2017
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