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Window regulator "snagging" at 25% and 75% up and down

  • stylingpat
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5 years 4 weeks ago #42547 by stylingpat
Hey everyone, working on my 1996 Chevy Silverado C1500 Truck. Ol' Betsy.

So I'm rebuilding my doors, just finished up the driver side door. Replaced the interior and exterior door handle, and replaced a rusted out window glass lift plate and replaced the rollers for my window regulator.

The window was getting stuck, and the handles were broken so I decided to wait and fix everything at the same time. Got everything installed back and everything is cleaned up. But my window gets stuck at the 25% and 75% marks going up and down? Obviously I cant see the 75% mark looking down into the door but I can watch the 25% and I dont see anything catching, no cables snagging on the regulator, nothing in the window glass lift plate, everything looks clean as a whistle. I thought I did a pretty tight job with everything.

Hmm.. I did ONLY bolt up 3 out of 10 bolts that hold the door panel to the door just to "test" the regulator. One up top, one of the bottom and one on the side. I know the regulator pushes out the bottom of the door panel when you start rolling the window up, AND I do know that a little resistance will cause the regulator to stop. Hmm maybe I'll put the rest of the panel bolts in and see if maybe that was the problem.. something simple.

Besides that, anyone know how the internals of these regulators are? I was thinking.. since it gets stuck in the same exact spots and I can "help" it through the spots by lifting the glass or pushing the glass a little. I was thinking maybe a tooth is chipped inside the regulator motor. "If" the internals are toothed.

This is the regulator assembly

www.amazon.com/ACDelco-11A62-Professiona...id=1598465348&sr=8-1

I figured if the motor is "failing" or going bad.. wouldnt the "catching" be at random? Feels like full power once I "help" the window past the catch spots.

Also dont know if it matters, the regulator makes a clicking noise when its catching, it just doesnt stop silent.

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5 years 4 weeks ago #42591 by stylingpat
I put all the bolts in on the door panel.. just to make sure, and it made no difference. Even tho the regulator "pushes back" on the panel as it lifts the glass, I had enough in already keeping the panel from moving.

Seems everyone else is stumped too. I'll just order a new one and see if that fixes the problem

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5 years 4 weeks ago #42598 by Ben
Frayed cable in the regulator. Also replace it with a good brand or you'll be doin it again....

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