I just put all new pads/rotors on the rear of my car, and now my inner pads on each side of the rear rattle. The little springy thing on the top of the pad is ini good shape, but my pad constantly moves around when the brakes/parking brake are not applied. I can not for the lfie of me figure out how to fix this. Anybody had this problem and fixed it?

 

Anybody had this problem?

 

little springy thing ???? Are you talking about the "H" clip.... If you forget to put that back, they might rattle and not apply properly....

Or it could be a defective pad... Take them off and get new set for warranty... Most part store have no problem with this, if you still have your reciept...

 

Dont know if this too late for you, but check the 2 retaining clips that hold the park brake shoe to the backing plate. When I was chasing rattles in the rear of my 99 Z28, I found that the clip on one side was unclipped, and the one on the other side was clipped but very loose.
I removed each clip, and held it in the vise and used a small hammer to re-tension the clip before re-installing. This seems to have cured a lot of rattling from the rear-end.

(Prior to this I also had both rear wheel bearings replaced and am using Mobil 80-140 Synthetic oil and GM additive.)

The reply to my mail message to Torsen (diff manufacturer) said that "the helical gears in the Torsen diff centre will make a rattling noise when the diff is not under load, typically when coasting at around 20Mph".
That's why I am using 80-140 diff oil.
Only other action I am now doing is to put some extra sound deadening into the rear of the car to reduce the Torsen rattle.

Good Luck,
Gavster1.