Hi, I have a camaro rear end in my bird. I am not sure what year.
Its a posi 3.23 Limited slip rear with disc brakes.

On my right rear tire the front pad (the one on the front of the rotor) has worn down to nothing, the one on the next side has about 40% left. The other tires have about 40% left all around.

What would you say its going on!! Here some pics.
The yellow lines show about how much pad there is.

 

My other problem is that I went changing brakes on it, and the bolts on the calipers only came out a certain way. After that no matter how much I unscrewed it, it stayed in place. It looks different than the front calipers and I am not sure how to change them??
Some tips would be helpful.

 

caliper hanging up somewhere? dirty slide pins? maybe the caliper is just shot.

 

Your caliper sliders are frozen. Easiest solution to save you time is to replace it with a rebuilt one from Auto Zone or the like, do both sides at the same time.

Ed