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power window switch works Intermitantely

Power window master switch (driver's side) works Intermitantely for passenger side front and rear windows. The switches on the individual passenger side doors work fine though.

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What's your exact model and year?

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Bob, May want to unwrap/ remove cover on bundled wires between door and door jamb and check for pinched/damaged wires, if all looks good there probably a faulty intermittent switch. You can disassemble switch and clean contacts ( a little tricky, careful of small parts falling out of place sometimes, clean contact areas with, contact cleaner, fine emery sand paper or try pencil eraser) or replace switch. Master power window switch can be found at auto wrecking/recycle yards for a lot less then dealer.

A couple links below to help diagnose pwr win. issues. Good luck.

I hope this helped you out, if so let me know by pressing the helpful button.

https://www.youtube.com/watch?v=2tLmH05U...

https://www.google.ca/search?q=GMC+pinch...

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I found my window switches on eBay, brand new and very reasonably priced.

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Bob will be eternally grateful.
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