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Rear window problems

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nau81blazer

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Mar 6, 2004
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Cincinnati, OH
Hey all,

So i'm having trouble with my tailgate window............again. Last time it wasn't working was because the sensor in the latch wasn't activating all the way. That's fixed, here's the new problem:

The motor for the window only runs if I put the key in the tailgate and run it down. If I try to run it up, nothing happens. The switch on the dash area doesn't run the window up or down. Any ideas on why this would be? I took the tailgate apart pretty well and none of the wires are corroded (sp?) and all the connections were tight.

The key switch in the tailgate was starting to get harder to use (before it completely stopped) but the dash button never had any problem. Then one day it just completely stopped working all together. I think there is a fuse for this window on my truck (an 81' silverado, K5 obviously). It's a bigger metal one, but I don't know what to look for as far as a blown fuse with this one. Right now I have to use my cordless drill to get the window up and down...............a bit frustrating.

Thanks for your input guys, I really appreciate it.

--Adam
 
It's not a blown fuse or else you wouldn't be able to operate the window with the key.
I sounds like it may be corrosion inside the key switch itself since things gradually stopped working. If I remember correctly (and maybe someone who's been inside their window more recently can correct me) all the wires go to the key switch. You can take the it apart and clean it. I think it's self explanatory how to take it apart, but if you do a search there's a post that expains how to do it.
 
Ok, i'll try to find that post. Why would the window still roll down with the key, though (since the switch on the dash doesn't roll it down).....very confusing. Thanks for the input.

--Adam
 
I had the same problem with my tailgate window and it ended up being the switch out of adjustment. I would double check the switch that is used to confirm the tailgate is up. Take the plug off and throw a jumper wire on it. This will eliminate the switch all together, then try to roll the window up or down. If the window does work, then there is something wrong with the switch, but if the window doesn't work, time to pull out a meter or test light and start checking for voltage and confirming everything.

I forget how it is exactly wired, but if you still have the problem, let me know and I can write up a cheat sheet for you on how to check it all out, but I would definitely double check that switch that confirms the tailgate is up. Good luck...
 
I can tell you this much , if the key switch needs replaced , some of the nuts are hiding behind the guts . I had to remove the window so I wouldn't break it , take the regulator loose , and there were the nuts . Remove the whole chrome thingy at once and change the switch out from that :D
 
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