RE: New rear rotors and brakes for 2000 Silverado
Changing rotors and pads.... If the calipers are not seized, being a 2000 they shouldn't be, the pads are a breeze (lvl 2), and the rotors are just as easy. Rotors are generally held in place by the bolts with yoru wheels. They usually slide right off.
If the caliper pistons are sticking out when you take out the pads, use a clamp from your local hardware store (handle looks like a gun handle), and compress them back in.
Swap the pieces, make sure you don't have any extra pieces left over (like shims from the back of the old pads - reuse them), bolt it all up, and you're done. [8D]