I bought this with no rear brakes,After checking things out I replaced Master cylinder(YES I bench bled this)After installing I have no pressure in back or front lines Can't bleed the system,Any ideas?? THANKS

What do you mean you can't bleed the system?

What I mean is when I try and bleed the system I just get a small drip of fluid from the bleeders in front nothing in back I repeated this at least six times nothing

Has your ABS light come on? Just a guess but since you've replaced the master cylinder I would surmise that the ABS modulator or pump needs bled also.

2004 Bonne SLE
1971 Chevelle SS

Can you give me a hint on how to do that nothing in the books . And yes the light is on has been since I bought it

Thanks by the way for answering

Farmer, I'm shadetree at best and an old one to boot, but from what I've read it depends on what ABS modulator GM has installed in your Jimmy, apparently some of them even require a scan tool to bleed them. Maybe a real ASE mechanic like Tech II will chime in and help you out, also remember the internet is your friend and maybe you can find a procedure on the web. Good Luck!

2004 Bonne SLE
1971 Chevelle SS