Power windows

2002 GMC SIERRA
256,000 MILES • 6.0L • V8 • 4WD • AUTOMATIC
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KKLEVECZ
  • MEMBER
  • 1 POST
Drivers door window will not go up or down. Changed master switch (quad cab so controls four windows), still nothing. Bought new window motor, still nothing. All the windows work from drivers door and from their respective door switches. Only drivers window is inoperable.
Jul 23, 2017 at 7:04 AM
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HMAC300
  • ✓Experienced Mechanic
  • 48,601 POSTS
Check to see if any wires broken between door and jamb that is a common occurrence with older vehicles.

See link.
https://www.2carpros.com/articles/how-to-check-wiring

Check dark blue wire at motor to see if getting power if it does then that eliminates broken wire I am assuming all windows operate from master switch. See picture
it can also be a broken regulator as well.
Image (Click to enlarge)
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Jul 23, 2017 at 11:06 PM
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