I hauled a yard of gravel in my trailer with the van. The brakes didn't get hot. They are working the way they should.

I replaced the caliber this morning. So far so good.

A brake hose is $40 and a caliber is $91. Everything is expensive in Canada. And likely the parts are from China. Can not get good quality USA parts.

I found that it is the passengers side rear brake giving the trouble. I put a c clamp and the piston moves easily. I will bleed that brake to see what the fluid is like. I may change the hose in case it has collapsed.

I have worked on brakes for 46 years. This is a first for me. I think the problem has to do with the antilock brake system. I have a shop manual for a 1999 Astro van. That was for my previous van, which never gave me a problem. I really need the 2004 manual to see if GM has the answers.

Yes, the rear rotors are warm after a drive. Both are warm on the rear.

I have owned my 2004 Astro van rear wheel drive from new. I have always noticed the rear pads wear faster than the fronts pads. I just changed the pads again for the third time. I do a lot of highway driving, so my brakes are not used like in city driving. Is there a fix for this problem?