So far I have:
Replaced rear parking brakes on both sides and backed them all the way off.
Replaced rear rotors.
Replaced rear pads.
Removed rear pad slides and wire wheeled the bracket.
Replaced and greased pad slides.
Replaced both calipers.
cursed a lot.
When the truck is driven there is a pronounced scraping/scrubbing sound (once per tire rotation) from the drivers side.
When truck is on jack stands there is a loud clicking noise from passenger side when idling in drive. Again one noise per tire rotation.