I had to replace all 4 rotors on my 02 GMC 2500 HD at 40k. RUST. The guy said he couldn't turn em down, too much rust. I looked at them and it was thick scales of rust working in from the outer edge. Like an old car frame. Hit it with a hammer and it flaked off.
Then the front wheel bearings starting going and were messing up the ABS. A little chatter every time I stopped.
Quality GM parts they us today.
Jeffm2008-01-06 12:00:04

I do not know anything abot fixing anything, do not claim to and not ashamed either, i am one of those people that for the time being pay to have things done, the reason for this post is to praise all of you that have the mass of knowledge you have i am just in awe reading the techo post and the advise givin with pure confidence and detail, thank you all and it gives me hope to know that i can try anything and you all are here to help figure out just what the hell i did wrong. love this place and hats off to all you wrench heads.

No heat from here Tux, Point well taken.  I have done it both ways and I could never tell the difference either.

Like I said in my post above I had a slightly scored rotor the last time I changed pads on wife's Malibu. I don't detect any difference in braking. I'm sure it will wear the pads a little quicker as the pad will take on the profile of the rotor.

[QUOTE=jayare] [/QUOTE]

Ya gotta learn a few new cuss-werds, Rich!

What year model car is this, anyway? I've never really run into one that I couldn't get the caliper bolts out of fairly easily... Are you trying to take the caliper mount/bracket off, or just the calipers from the mount? Not sure what type set-up your car has.
You will find, once you do get the bolts out, that they have "Lock-Tite" on the threads, and that can make removal pretty tough, at times. Have you sprayed the area with penetrating oil?
You might have to resort to a mild application of heat, to loosen the grip of the Lock-Tite...

Thanks Joel.....I'm just gettin old.