Author Topic: Power Window motor replacement 85 Silverado  (Read 33171 times)

Offline JAG66

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Power Window motor replacement 85 Silverado
« on: December 28, 2006, 11:37:00 PM »
What is the procedure for removing and replacing the power window motors in my 85 Silverado? They are currently not working and the windows are in the up position. I've removed the door panels, and only see an access hole in the inner door metal. Help.  


Offline joesgarage71

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Re: Power Window motor replacement 85 Silverado
« Reply #1 on: December 28, 2006, 10:42:00 PM »
There not working meaning both doors?Are there 12V to the switches?Do you have 12V to the motor when working the switch?
Steve

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Offline JAG66

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Re: Power Window motor replacement 85 Silverado
« Reply #2 on: December 29, 2006, 06:40:00 AM »
The motors are bad, the switches are good. The RS motor works very very slowly. How do I remove/replace the motors?


Offline VileZambonie

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regulator
« Reply #3 on: December 29, 2006, 09:15:00 AM »
you need to remove the regulator with the motor. make sure that you have the regulator secured via a bolt so that when you remove the motor you don't lose any of your digits. It's pretty easy to figure out just remove all of the bolts and minipulate the regulator out of the guides and the glass and don't forget what I said about removing the motor.

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Offline JAG66

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window up
« Reply #4 on: December 29, 2006, 03:24:00 PM »
The windows are in the up (closed) position. How do I get the windows down to remove the glass, regulator, motor, vent window? I assume I need to remove the vent window also. I need detailed directions b/c I can't see how the door internals come out. My Haynes manual is not much help to me.  


Offline VileZambonie

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Re: window up
« Reply #5 on: December 29, 2006, 07:47:00 PM »
Well are you sure there is B+ and GND at the motor when you command it down? Before you go bezerk make sure it is reversing polarity. You can easily determine this with a test light. You do NOT need to remove the vent window but you will need to unbolt the regulator. There are 4 bolts securing it to the door.

,                           ___ 
                         /  _ _ _\_
              ⌠ŻŻŻŻŻ'   [☼===☼]
              `()_);-;()_)--o--)_)

74 GMC, 75 K5, 84 GMC, 85 K20, 86 k20, 79 K10

Offline bigblock73

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Re: window up
« Reply #6 on: December 30, 2006, 08:09:00 AM »
« Last Edit: September 09, 2008, 10:02:25 AM by Captkaos »
Jeff

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Offline JAG66

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Re: window up
« Reply #7 on: January 07, 2007, 09:51:00 PM »
bigblock73, Thanks, that helps.