[kkracko]

The only way I could get more than just a few drops of fluid out of the rear was to remove the nut and spring from the ABS unit, start the truck and run the wheels in first gear for a few seconds (it's on jack stands) and then open the bleeder screws while someone was pushing down on the pedal. Using this goofy method I was able to get some fluid out of the bleeders but was never able to get any brake preasure on the rear drums.
I broke down and ordered a rebuilt ABS hydraulic unit from O'Riley's today. They wanted $107 plus $60 core. Hope that's it.