Recently I've been having a problem with squeaking from my rear on sharp turns and bumps. I jacked up the car and tried moving the rear wheels in an out. Sure enough they both move about 2-3mm. I decided that this was probably caused by bad C-Clips holding the axles on, so I replaced those today. And the problem is exactly the same. Before I bolt everything up and refill the rear with fluid, can anybody give me a suggestion on what could cause the wheels to move like that besides the C-Clips?

 

What kind of shape is the pinion pin in the carrier? If it's damaged where the axles touch it would cause exessive play.

 

Is that the thick metal pin that goes in the middle of the whole thing? If it is, it was in good shape, went in tight, no play at all. Anybody have suggestions on what this could be? Could the axles themselves wear where they touch the C-clips?

Also I remember reading about some fix that GM provided for this problem, shim plates or something like that. Anyone got more info on that?

 

There may be a little wear, but nothing i'd worry about. Whats probably causing the squeek is on turns, the axle moves out slightly which causes the brake rotor to rub the inside of your brake caliper. Look at your rear rotors and see if you see rub marks on the very outter edge of your rotors. If you do, then thats the issue. You can also remove the tire, pull the caliper off and look inside that and see if you see rub marks. Not much you can do about the slop unless you want to tear apart the rear and put new parts in. No need to do that though. What I did though before I put in my 12 bolt was remove the rotors and took a dremel and ground down the inside of the calipers where they were rubbing. Didn't take off a lot, but maybe a couple of thousands. Just enough to make some space cause at that point, the caliper is very close to the rotor so any slop in the rear will make them rub. Never had a problem after that. Let us know what you find.

Ken R.