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Old 01-13-2018, 08:14 PM   #1
tobiahr
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Another K5 rear window thread

I have a 1982 k5 with a power rear window that is stuck in the up position. there is a sub box built and mounted to the rear floor so that it is snug against the back door and I cannot get to the panel and roll down manually or reach the motor. the rear window will not roll down with either the dash switch nor the tailgate switch and there is power to the dash switch. can anyone tell me what wiring I can cut into to try and bypass the switches or it that is even possible? kinda stuck at this point and looking for any suggestion that does not involve destroying the sub box or body sheetmetal.
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Old 01-14-2018, 11:16 AM   #2
Zook75
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Re: Another K5 rear window thread

I just went threw this myself, I had power to both switches and could hear the motor trying but not moving. My issue was the drive cable itself and had no choice but to get the inside panel off.

I hate to say it, but I'm pretty sure your going to have to pull that box out.
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Old 01-14-2018, 01:59 PM   #3
tobiahr
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Re: Another K5 rear window thread

i'm afraid your right. looking at if I can drill out or grind off the mounts for the box from underneath or if I am just going to sacrifice the box. Thanks for the reply
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Old 01-16-2018, 12:29 PM   #4
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Re: Another K5 rear window thread

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Originally Posted by tobiahr View Post
i'm afraid your right. looking at if I can drill out or grind off the mounts for the box from underneath or if I am just going to sacrifice the box. Thanks for the reply
Pull the speakers out. It's probably just screwed in from inside the box.
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Old 01-16-2018, 10:31 PM   #5
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Re: Another K5 rear window thread

I wound up pulling the speaker box out....didn't matter that I ruined the front of the box as at some point a rodent had chewed through the front of one of the speakers and nested in there anyway. The motor had seized and the cable basically fell out of the motor when I touched it.
Thanks for the replies.
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Old 01-16-2018, 10:44 PM   #6
Zook75
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Re: Another K5 rear window thread

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Originally Posted by tobiahr View Post
I wound up pulling the speaker box out....didn't matter that I ruined the front of the box as at some point a rodent had chewed through the front of one of the speakers and nested in there anyway. The motor had seized and the cable basically fell out of the motor when I touched it.
Thanks for the replies.
So you need a new motor or cable?
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Old 01-19-2018, 05:11 PM   #7
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Re: Another K5 rear window thread

both. I am going to wind up rebuilding the entire regulator and rear door anyway and so will leave it down and disconnected for now. thinking about smoothing the rear door and putting the switch somewhere else as well.
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Old 05-07-2018, 11:09 AM   #8
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Re: Another K5 rear window thread

Tobiahr~

Any luck? I have a 91 that might share the same parts as yours. I need to stay ahead of the slow crunchy cranky rear window and start throwing parts at it. Did you end up finding a good source for parts?
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Old 05-10-2018, 07:38 AM   #9
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Re: Another K5 rear window thread

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Tobiahr~

Any luck? I have a 91 that might share the same parts as yours. I need to stay ahead of the slow crunchy cranky rear window and start throwing parts at it. Did you end up finding a good source for parts?
LMC Truck has all the parts you need.
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Old 05-28-2018, 08:51 AM   #10
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Re: Another K5 rear window thread

I've had really good luck with CARiD. Also, when I left a good review they sent me a $25 coupon good for my next purchase. All the parts I've purchased have been exceptional quality. You can also check Rock Auto but everything I've needed I found at CARiD for less.
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