I replaced the rear brakes(Pads and rotors) on my Jimmy this weekend. I had a bad passenger caliper that I also replaced. They gave me the wrong side caliper when i ordered it. So when i figured this out I just took the core back so I didnt have to make 2 trips. I let a bunch of fluid drain out not paying attention.

I went to bleed the brakes after i had all the correct parts and I am getting barely any fluid out of the rear calipers. I did not let the MC run dry, some fluid is coming out, but tons of air bubbles. I had no problems with the rear brakes prior to this so the MC and booster are untouched

I have tried using one of those vacuum bleeders, I get some fluid, and tons of air. I tried for close to 2 hours pumping this thing and its still the same result. I get a little bit of fluid from the MC thru the brakes, but i never get solid pressure thru either of the rear calipers.

I went as far as to yank off the MC and bench bleed it, but i get the same thing. Lots of air and little fluid. At this point I havent checked the front to see if I still have fronts, but there is def not enough pressure to get the rears to squeeze down.


Where is the proportioning valve for these trucks? Someone mentioned that could be stuck all the way closed for the rear causing my problems. I have ABS and I am doing the bleeding with the cap closed and the car off. I get no difference with the car on or off.


Anyone have any other tips with this? At this rate I might have to have it towed because I am in over my head.