I've been having problems when turning left at higher speeds... the left rear brake begins squealing. I know it has something to do with the rear sliding out a bit and rubbing against the caliper. I replaced the C-clips 2 years ago so they should be ok... and I don't want to dig into the rear end again.

I was reading on ws6.com about using shims to alleviate the problem. Here is the quote:

"Assuming that you haven't completely run a brake pad down the metal plate, this noise can come from C-clip axle end play. This moves the rotor closer and father away from the caliper mount. When the edge of the rotor touches the caliper mount, you will hear the noise - usually only when turning in one direction (i.e. rotor moves out enough to hit in only one direction). The Caliper mount can be relieved in the area that it touches or the caliper mount can be shimmed. Keep in mind, if this was not a problem, GM would not have shims. In the 1994 service manual, information on this can be found under "Brake Caliper Alignment" in section 4B - page 27 (4B-27), entitled: "Rear axle assembly with rear disc brakes" (figures 1 through 4 and 38). There is however a Technical Service Bulletin (#474201A) for this which you should advise your GM service person about.

While I understand the concept...I'm still trying to figure out how the brake shims work? I wanted to do it this weekend...I'm assuming that I'd have to order them from GM?

Anyone else do anything cheaper then this.. thanks a lot for your advice.

 

If you don't get an answer here, go to the dealer and have a look at the parts microfiche.