Originally Posted by Tech II
I'm not sure, but wouldn't this system have either a combination valve or proportioning valve to the rears, that may have to be depressed?
Gus, interesting point, I know the really old disc/drum systems like on my 71 SS had prop valves you had to deal with when bleeding brakes, the prop valves kept the rears from locking up under heavy braking but maybe abs has made those unnecessary? At any rate if the op has a prop valve it should be located on the frame rail beneath the master cylinder on his 1 ton.
2004 Bonne SLE
1971 Chevelle SS