1983 Chevy K20 Power windows... - Hot Rod Forum : Hotrodders Bulletin Board
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Old 12-13-2008, 09:02 AM
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1983 Chevy K20 Power windows...

When I got this truck, nothing worked, I got everything working eventually but the power windows boggled me...I tested them to what knowledge I had of how they worked and discovered that the ground was bad...I looked for the ground but could never seem to find it, so I bolted a ground to the inside of the door and spliced it into the wire for the window switch, which got the driver side window working pretty good, it also got the passenger side working to, but very weakly, I actually have to help it up..I guess I could just splice another ground into the pass side door, but I hate rigging stuff, I also noticed that at idle my wipers are very underpowered, so I was thinking that there is a major ground somewhere that runs all those things, that is very weak or bad, but I can't seem to find it...Any Ideas would be greatly appreciated...I have read some threads on here about the alt at idle, and I know my alt doesn't produce enough power to run things at idle, so Im sure that could be part of the wiper situation, but as for the windows its definatly a ground issue...Thanks for taking your time to read this...

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Old 12-13-2008, 11:22 AM
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You said that the windows are kind of sluggish? I had this same problem ith my 84' c-10 and I took some advise from the window shop and the first thing they asked me if the window tracks were greased with the white lithium grease.I did this to my drivers side window and have noticed a 50% speed increase. Mabey this can help you.
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Old 12-14-2008, 09:21 PM
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Yea, the tracks are greased, like I said it's definatly a ground issue...They didn't work at all till I put my own ground on the driver side door...Which got both windows working, but the pass side, is very weak, which means it needs a better ground...I could take the panel off and just ground that one like I did the driver door but I was hoping to be able to find the ground that goes to them and replace that so they worked right without having to rig em...
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Old 12-19-2008, 10:36 PM
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Hey Nova,
I just finished cleaning and greasing my window motors and the windows fly up and down. You have to remove the motor/regulator and take the motor gear end apart. You will notice the old lube that the factory put in will be nasty. Mine in my 79 truck was so old it was cracked and brown with dirt.
clean all that nasty gunk out and replace it with some white lithium and you will have good quick windows. I went as far as taking my motors apart and cleaning them with electronic cleaner. I also greased the tracks and regulators while they were apart.

As far as grounds, check under the cab on the passenger side, there should be a braided copper ground strap between the cab and frame. Also, a copper braided strap between the engine/exhaust manifold and the firewall.
Grounds in a vehicle is what make the world go round. The more the better.
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Old 12-20-2008, 08:43 AM
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I think high amp items (windows and wipers) have their own grounds, but one other very important ground to check is on the instrument panel. It is usually grounded to a bolt on the top of the emergency brake pedal bracket. Its relatively easy to see and reach if you lay on the floor of the truck and look up at the top of the bracket.

Bruce
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