I went to go redo my brakes the other day, the car has been parked for a while and they always ground fairly badly, I decided just to bite the bullet and do new pads and rotors all around rather than try to figure out exactly what needed to be replaced (the rears turned out to be fairly decent, but oh well), and I even did the 06+ dual piston Impala upgrade up front. Anyway, while I was waiting on the calipers for the front, I did the rears. The passenger side rotor refused to come off! WD40, a pry bar and a brass hammer didn't get that thing to budge. I ended up using a 3 jaw gear puller on it, and after a lot of trying, POW! It came off all at once, damn near deafening me in the process. The driver's side came apart fine. Fast forward 2 days, I go to do the fronts, and both of them were rusted onto the car! The passenger side was the same deal as the rear, but I actually had to wedge a pry bar between the rotor and the puller to keep the axle from spinning and I had to stomp the breaker bar to tighten the puller any further. When it broke free, it actually flew off of the hub. Yaaaaaay for rusty ****.