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.

Any ideas?

 

Everything is lined up right?

 

As far as I can tell yes. The only abnormalities are weeping wheel seals (very minor) and the parking brake engagement mechanism was frozen solid on both sides, I had to remove the passenger side one in order to soak it in blaster and unfreeze it. re-installing it damaged the boot that protects it slightly.

 

Hmm well im not an expert on breaks just know how to install them.
When the truck is on jack stands and you spin the tire where is the noise coming from

 

On jack stands the sound is coming from the passenger side wheel, sounds like it is near the caliper. I forgot to say when you ride the brakes and gas (same time) down the road the sound is muffled quite a bit.

 

Heck beats me sorry i even responded getting your hopes up that i may have a answer for your problem.
Someone else with more experince with breaks will reply sometime today or tomorrow.

 

I appreciate your help anyways! It got me thinking about that parking brake, I think I'll make sure it really is backed off all the way.

 

Yeah the only thing i can think of is a slight angle on the pad to the calliper, but the way your talking about it i wouldnt think that was it

 

Backing plate rubbing the rotor

 

Take the Rotor back off and look at it for scrape marks inside and out, reinstall the rotor and regrease the slides. You got a scraping noise, so it has to be leaving a mark on something.