Question about 1999 GMC Jimmy

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The brake pedal on my '99 Jimmy, has always gone low when stopping. Anyway to adjust it? No leaks and new brake lines...

Posted by Debra Dykstra on


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  • 259 Answers

SOURCE: brakes not working

sounds like you still have air in the brake lines i would try to bleed them again hope this helps regards Jim

Posted on Apr 07, 2009



  • 8 Answers

SOURCE: Brakes are gone

check ur brake lines for posible leaks. also make sure to bleed your brakes after you put fluid into it or else the air won't come out of the brake lines causing ur pedal to still go to the floor

Posted on May 27, 2009



  • 175 Answers

SOURCE: front brakes stay locked up

You may want to replace your flexible feed lines to the calipers. Any little bit of **** in them will not let the brake fluid out of the caliper,

Posted on Jul 29, 2009

Richard Delahant

  • 1201 Answers

SOURCE: Brake pedal still goes to floor 2000 GMC Jimmy

It's very possible to be the master cylinder, the o-rings on the piston could be worn, letting the fluid seep back through instead of getting full pressure through the lines. Could also be the brake booster.
Try changing the master cylinder first, which is cheaper and easier, and see if there is a difference, you'll need to bleed the brakes again.
To check the booster,
With the engine off, pump the brakes until the pedal is hard, then hold pressure on the brake pedal and listen for air escaping, or the pedal goes slowly to the floor, Do that after the master cylinder has been changed, at least that will be eliminated.

Posted on Sep 15, 2009

Testimonial: "Hadn't thought about the O-rings on the rod thanks for the idea. Great Idea Thanks!"


Drew Z

  • 681 Answers

SOURCE: I have a 2000 Jimmy and the signal lights nor

Most likely the combination/multifunction switch (turn signal lever). It can be changed without taking the steering wheel off, but not a job I would recommend if you have minimal experience. Since one of the (pair) wires go across the top of the column and connect to the shift safety switch on the right side of the column. The rest of the wires go to the main plug lower left of the column. The knee bolster is usually removed (plastic piece of dash by driver's knees). Shouldn't take a mechanic over an hour/ hour and a half.

The reason it stops when you depress the brake pedal is because your brake lights, and flashers use the same bulb.

Hope that helped, thanks for using FixYa.

Posted on Mar 30, 2010

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1 Answer

No brakes

I think the air is still there.

May 05, 2013 | 1998 GMC Jimmy

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My break pedal I have to pump twice to stop, I checked the pad and shoes, they are in good condition. what I don't know is how to set the E break?.

When you say "E" I am guessing you mean an emergency brake. The parking brake can be used for that reason but not designed to do this but only in an emergency. below I gave you the instructions on how your parking brake works. I hope this helps and is what you're looking for and by the way it sounds as if you need to replace your master cylinder. Good luck.


May 19, 2011 | 1998 Ford Windstar

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How to adjust brake pedal in buick lesabre

Should not need to adjust the brake pedal.If it is low or going to floor check for leaks or air in brake lines.could also be that the rear brakes need adjusting.

Apr 14, 2011 | 1992 Buick LeSabre

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99 ford explorer brake pedal goes to floor. Booster or master cyl. ?

Not likely that the booster is an issue. The booster would not be able to overcome the brake fluid compression.
First open and inspect all brakes for leaks, adjustment, etc. Check all brake lines.
So if no leaks, did the fluid go low in the MC? If so, pad consumption would eat more than a MC reservoir of fluid, and not require MC replacement, but rebleeding and top up of fluid. If the pads are worn, and you replace them, often this will expel air back through the MC.

If you determine the MC is faulty, bench bleed the new one before install, or you will have lots of problems getting air out....

Mar 03, 2011 | 1999 Ford Explorer

1 Answer

While driving the !P Brake light came on and now brake pad only stops when pushed all the way down to the floor.

First check your brake fluid level...this is the first symptom of low brake fluid pressure...If the fluid is still full, then no brake pedal pressure means bad master cylinder...or leak in brake lines or connections...should be able to trace...Not a fun brakes are a priority...hopefully just low fluid...fill to full mark...:)

Dec 13, 2010 | 2000 GMC Jimmy

1 Answer


mcdevito75 here, True a bad Master cylinder but you can"t rule out a major leak, look carefully for brake fluid leak, also chek fluid in master cylinder if low, fluid going someplace, have the shop check it out.

Jun 18, 2010 | 1999 GMC Jimmy

2 Answers

Brakes are pulsing

new rotors, machine rotors or just a pad slap?
pulsing indicates warpage, is if felt in the steering wheel or the brake pedal? did you do front and rears?
is it drum or all wheel disc brakes?

Apr 13, 2010 | 1999 GMC Jimmy

5 Answers


Check your brake fluid level in the reservoir; some Toyotas have wheel cylinder sensors; some Toyotas have master cylinder sensors; you also have a sensor on the parking brake and on the brake pedal inside the cab. Check all that.

Feb 14, 2010 | 1993 Toyota Pickup

3 Answers

Brake to the floor in order to stop. they are new

make sure the rear shoes are manually adjusted up properly ,then is still no good renew the master cylinder because the seal between the front and rear chambers could have gone ,but i do feel that you should manually adjust the rear brakes up properly,slacken handbrake cable before you do this though

Dec 10, 2009 | 1995 Toyota Camry

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