Parking brake not disengaging fully - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 07-22-2010, 09:51 AM   #1
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Default Parking brake not disengaging fully

I've been noticing as of late that, occasionally, my parking brake won't disengage all the way. The brake itself doesn't stick (the car isn't sluggish or smelling funny), but it'* engaged just enough to keep the brake light on and dinging at me. Once I kick it up, it'* back to normal. Here'* a video.

Thoughts? I'm guessing a nut is loose.
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Old 07-22-2010, 10:00 AM   #2
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Thoughts? I'm guessing a nut is loose.
Hahahaha Might be the return spring.
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Old 07-23-2010, 01:33 AM   #3
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If it helps you diagnose, this happens more often when I keep my foot on the (regular) brake while disengaging the parking brake.

Any tests I can do to better troubleshoot?
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Old 07-23-2010, 07:26 AM   #4
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Check the return spring and the fluid level in the master cylinder.
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Old 07-25-2010, 03:01 AM   #5
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The master cylinder was missing about half a bottle'* worth of brake fluid. Didn't seem to make any difference, though. I'll see if I can get a good look at the spring tomorrow morning.
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