Rear knocking noise. Need ideas FWIW - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 05-07-2007, 10:41 AM   #1
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Default Rear knocking noise. Need ideas FWIW

I've been having this for a couple weeks, ever since I put the swoopies on coincidentally.

When I brake and am coming to a stop I hear a knocking noise from the rear passenger side wheel area. It'* a consistent knock, knock, knock...as I slow down. I thought brakes of course, but upon inspecting them with Bill everything LOOKED fine. Shoes are fine, drum is fine. I did notice though the shield around the drum was rubbing on the drum itself, so I bent it back out. I still have the problem though.

So could this be the cylinder perhaps? Wheel bearing (I've gotten no humming though in weeks)? Something with the parking brake since I use that a lot? NFC here, maybe someone has had this before. It seems like a brake issue but I can't afford to buy parts when I'm not sure they are broken.
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Old 05-07-2007, 10:59 AM   #2
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My bets are on possible bearing. The wheel cylinder isn't leaking and the brakes are working correctly. E brake is built into the brakes and appears to work.

There' not much else there to make noise.
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Old 05-07-2007, 11:03 AM   #3
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Jack up the rear, and wobble those suckers up down and around. If it'* a bearing, you'll know it.
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Old 05-07-2007, 02:31 PM   #4
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That'* the other reason I didn't think it was a bearing, because I jiggled that wheel at 9 and 3, and 12 and 6 while Bill watched. No wobbling after a couple weeks. I suppose it just may not be that bad yet.
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