Electric Windows- GMC Van

Old 04-16-02, 10:19 AM
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Electric Windows- GMC Van

I have a 93 GMC van 5.7L with electric windows. Recently the drives window only goes up a few inches at a time. As it is actuated more frequently, the distance the window goes up decreases until it will not move. Waiting 15-20 allows it to go up another few inches. Helping the window go up does not make much difference, it will still stop after a few inches. I have had the panel off and did not see any gross binding areas, but it did appear loose. I do not see anything missing that would cause it to be loose. This is a nuisance that means one must plan far ahead to get the window closed. Any suggestions?
Old 04-16-02, 10:30 AM
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Take the panel off.

Bring power to the motor from the battery. Does it go up and down correctly. Do it a few times.

If it's balky, you have a bad motor.

If it's fine, you have a wiring or switch issue...or a dirty connection.
Old 04-16-02, 01:37 PM
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Bad window guides may also cause this condition,Causing window to get hung up.
Old 04-16-02, 04:44 PM
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First check the motor.....If it's good then check the wires in teh boot between the door and body........A broken wire will cause the same problems.
Old 04-17-02, 04:27 PM
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some cars have window relays. sounds like a relay to me. had same problem with a 91 olds ciera. the relay was in the fuse box.

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