Question about 2001 GMC Sierra C/K3500

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I have a 2001 GMC crew cab dually, 8.1 gas engine, the brake pedal is very low and sometimes it feels like it doesn't want to stop. I have replaced all of the rotors with vented ones and new brake pad all around. What could be the cause of this?

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Take a look at the wheel bearings, jack it up and try to shake the wheel , if theres play then replace wheel bearings, what happens is the wheel bearing goes bad and the hub gets loose and pushing the claiper piston in so when you step on the brake the pistom has to be pumped back out this would cause a low pedal and loss of braking unless you start pumping the pedal before stopping, another thing to look at is to make sure the pads are sliding freely and not tight and last is the caliper slides should be free, you should be able to push them in and pull out freely, start with these checks first, hope this helps.

Posted on Nov 08, 2010

  • KGread Dec 20, 2010

    The 2001 Sierra brake system needs to be "re-set" to eliminate soft pedal. This needs to be done at a shop with the proper equipment. Also, the phenolic linings in the brake calipers can swell, causing sticking, which will quickly damage pads and rotors. Make sure you get the entire system checked out soon. Same time, make sure emergency brakes are free.

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I would say you have air in the system or the linkage needs to be adjusted. Make sure your brake booster is not leaking.

Posted on Nov 08, 2010

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