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Old 03-23-2015, 11:53 PM   #1
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Default 2001 GMC Jimmy

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
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Old 03-24-2015, 06:18 AM   #2
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What do you mean you can't bleed the system?
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Old 03-24-2015, 06:22 AM   #3
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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
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Old 03-24-2015, 12:51 PM   #4
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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.

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Old 03-24-2015, 01:52 PM   #5
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Default Abs bleed

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
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Old 03-24-2015, 01:53 PM   #6
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Thanks by the way for answering
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Old 03-24-2015, 05:40 PM   #7
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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!

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