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GMC Jimmy Brake Problems

10 messages,  Last post on Oct 24, 2009 at 7:36 AM

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What is this discussion about? GMC Jimmy, GMC S-15 Jimmy, Brakes, Truck

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#1 of 10 1994 jimmy breaks/power booster by spazjackson Apr 22, 2008 (6:42 am)
can anyone tell me how to remove th power booster from my 1994 gmc jimmy...i do not know how to disconnect the rod from the break padel.. I have removed three of the four bolts from the inside..Do i have to remove the steering colum to get to the top right bolt because i cant get to it from this angle...
#2 of 10 need help w/brakes, mush by pcgeek Sep 03, 2008 (10:22 pm)
I have a 92 Jimmy SLT 4X4 w/ABS. I blew a brake line, to the rear, and now I cannot bleed the system correctly. The peddle stays mushy and the dash lite stays on. Does the ABS controller have to be reset or bled? If so, how? The brakes do work, without activating the ABS, but the peddle travels most of the way to the floor. The park brake is all the way up.
#3 of 10 97 Jimmy Brake mystery...please help! by jonina Sep 29, 2008 (11:22 am)
I have had 2 new brake boosters and 2 new master cylinders put in and I still have the same problem. Spongy brakes, that sometimes go to the floor. They also feel like they are really hard sometimes.....like not power brakes at all. This problem has been ongoing for over a year and I have had about 10 different guys look at the truck. Nobody can seem to fix it and it scares the crap out of me. If you slam on the brakes the car does not stop quickly....it kind of lurches to a stop. I still drive it but always slowly to allow extra room for stopping. The truck does have after market parts in it and I have even taken it to a GMC dealership to get their opinion and they also told me to replace the master cylinder and booster for 2500 dollars. I have already spent close to 1500 trying to fix this and I just don't want to spend 2500 to still have it not fixed! This has been an ongoing nightmare and I just want to either fix this or get rid of this horrible truck....but i feel too guilty selling a car like this to anyone....it isn't safe. Please help if anyone has any ideas....it has had all the lines bled. It has every other new brake part you can possible have.....it is just still weird. One guy told me it could be the something to do with the ABS but the dealership guy said that it wasn't that.
#4 of 10 jimmy brake problem and rough running by vikingsfan1 Nov 27, 2008 (7:32 pm)
i keep getting carbon in my power brake booster and when this happens it starts to run rough how can i fix this problem
#6 of 10 Standing on the Brakes and still can't stop!!! by omega7441 Mar 25, 2008 (11:33 am)
Hey all,   I was thinking about buying my in-laws Jimmy (not sure of the year atm). But I took it for a test spin and the brakes are horrible with it.   After getting it up to about 70 on the interstate, I literally stood on the brakes and it didn't do anything.... Eventually you will slow down and come to a stop, but you really gota have some muscle to get this thing stopped.   Now I need to know what to check for this, air in the lines? or anyting specific to this issue. I dont really want my wife and future child in this vehicle, but I would really like for them to have something like this to travel in.   Let me know,   Thanks Nick
#8 of 10 1998 Jimmy, No brake pedal by findlaydawg Oct 05, 2009 (6:20 pm)
I recently replaced both back brake calipers. I bleed both rear brakes. But i still had no brake pedal. I then bleed the front brakes and still no pedal. So i then bleed the master cylinder. I finally got a good stiff brake pedal. I started the vehicle and depressed the brake pedal and it went all the way to the floor and wouldnt pump up. Any suggestions?
#10 of 10 BIG BREAK TROUBLES 2000 GMC JIMMY by lovechevyh8gmc Oct 24, 2009 (7:36 am)
one of my brake pads on my rear driverside slid down from the caliper. the piston is fine and i was able to collapse it back down with a clamp when i put a new rotar and pads on. i drove back to my house from my dads and it smelled like hot metal i touched the rim and on the back two tires and they were hot to touch, the front were cool. the abs light was on on the way home and i was getting horrible mpg! any suggestions

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