95 Tahoe rear brake squeal

================ Did you turn the drums? Everything needs to be smooth to stop noise. If you didnt, turn the drums then sand or replace the shoes again, that should do it.

I shouldn't have to turn the drums every 500 miles. I have turned them three times in 130,000 miles, but that doesn't seem to have any affect. In a normal stop, everything is fine, no noise. It's when I am inching forward in stop-n-go traffic or at a drive-thru window that the noise occurs. It's like the rears aren't getting the right proportion of pressure. Is there an adjustment to the proportioning between front/rear?

Ten bucks says the drums are beyond the minimum thickness and need to be replaced. After being turned three times they gotta be below the min. thickness. Wheel cylinders can't push the shoes out far enough to make decent contact hence they squeak. Time for some new drums bud!

Doc

If I sat and thought about that for a minute, it makes sense. This problem started after the last time I had them turned. The same time the mechanic replaced the cylinders. I just attributed to the wrong thing. And I don't think I'll be lettin' him do any more work for me, if he's going to send me down the road with drums below the min.

Thanks Doc!!

No problem. If you have a micrometer, spec them out just to see how thin they really are.

Doc

===================== Yes, I didnt say you need to turn them every 500 miles, I asked IF you did. Doc is probably right about them being over-size now. Back in the good old days we used to arc the shoes to fit the drum. Now you turn them once and the shoes dont "fit" right. I dont think anyone arcs shoes anymore, probably scared of asbestos I guess, Or maybe just too time consuming. Drums are pretty cheap now to, and you should be able to find some with a good finish on them right out of the box. Most need cleaning before install too because they put some anti-rust crap on them.