2000 chevy 1500 silverado- rear brakes overheating

This video should help. It's a 2000 Silverado but is probably the same as yours.
2000 Chevy Silverado 1500 front brake pads rotors replace

I would think it is something going on with the master cylinder or booster. Even the ABS could be affecting it.

The rear brakes are adjusted to tight or the parking bbrake portion of the brakes was not installed properly or the parking brake is on.

Your calipers are sticking and causing your brakes to drag.Did you clean and lube the caliper slides before you reinstalled them and did you have the rotors turned?I have had this happen to me after doing a rear brake job.One or both of the calipers would stick and I had to replace them.Which means you will have to bleed the rear brakes.(Rear only)Hope this helps and let me know if you have anymore questions.Good luck.

This year of truck did have issues with rear disc brakes. Quality of pads is extremely critical. Go with the AC Delco pads and rotors to eleviate some of the issue. Make sure that the slide pins are liberally lubricated and move freely or drag will cause excessive heat to occur. Let me know if you need anything else.

the front rotors are warped,usually because the rear brakes are out of adjustment,causing you to over work the front brakes,change rotors and pads,check rear brakes if you need more help get back to me Thanks Ray,Please rate my fix as i strive to be the best

on disc brakes there is a metal marker on them that when the pads get low on material it will make a squeeling noise to let you know its time to change the pads.. so I would say you are in need of front pads also even though they look good you are getting low.. this marker is designed to let you know its time before you get to metal to metal .. jerry

check retaining clip on hand brake shoes behind rear rotor,check if shoes arent ondone from clip,check calyper and guide bolts for binding.

The Rotors would have to be Grooved Beyond Resurfacing to Change them. Check and see if they have very deep Grooves. If Not you just need pads. Some Places will do this for 75.00 and others will Charge upwards of 200 to 400 Bucks for Service. Just do some Calling and Check out Prices first.

Take the top off your master brake cylinder to relieve pressure. You may have over-pressured things if you didn't take the cylinder cap off when you compressed the rotors. You said pads, so I assume they are rear disc brakes.