2001 GMC Yukon Logo
Allan Mayne Posted on Aug 03, 2012
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My Yukon ABS brakes keep me from stopping on uneven roads and in turns

Why do my ABS kick on when I am trying to stop on uneven roads or in a turn.. My brake pedle starts vibrating and the truck is hard to stop

1 Answer

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  • Expert 79 Answers
  • Posted on Aug 03, 2012
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Joined: Aug 03, 2012
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If this issue is at low speed roughly five to ten mph it is a sign of a bad wheel bearing as the abs speed sensor reads off of a tone ring attached to the front bearings, when the bearing gets too much play it causes the sensor to receive an eratic signal making the on board computer activate the abs thinking the vehicle is sliding

5 Related Answers

autodr

autodr

  • 260 Answers
  • Posted on Dec 04, 2008

SOURCE: 2002 gmc 2500hd 4wd abs problems

the problem is most likely a wheel speed sensor at one of the front wheels. retrieving a code in the abs system could pinpoint which wheel it is. i believe the wheel speed sensor is part of the bolt on front wheel bearing assy. if you plan on doing this yourself and are mechanically inclined. you will need an a/c volt meter to check sensors. let me know if i can assist further.

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Jonah Oneal

  • 14092 Answers
  • Posted on Jun 06, 2009

SOURCE: 2003 Sonoma SLS 6 cylinder 4.3L ABS issue

I WOULD NOT KEEP DRIVING IT.WHEN ABS LIGHTS AND BRAKE LIGHTS COME ON.YOU HAVE BRAKE FAILURE. TOW IT TO DEALERSHIP HAVE IT SERVICE.AND CHECK THE ABS BRAKES SYSTEM .BECAUSE ABS BRAKE SYSTEM IS NOT A HOME FIX.BECAUSE THE ABS HYDRAULIC MODULATOR UNIT HAS LOWER FROM HOME POSITION .IN ORDER TO MOVE THE MASTER CYLINDER FROM UNIT.YOU NEED A TECH 2 SCANNER TO DO THE JOB.TO GET ABS BRAKES TO BLEED RIGHT BEST TO GET THEM PRESSURE BLEED INSTEAD OF MANUAL BLEEDING GET LESS AIR IN SYSTEM.THAT WHY SEE DEALER SHIP HAS THE THINGS TO DO THE JOB.

Anonymous

  • 1615 Answers
  • Posted on Jul 17, 2009

SOURCE: Power brakes not working

No such thing as vacuum lines to the master cylinder. You do have a vacuum line on the brake booster (power assist). When you step on the pedal do you hear a whoosing sound down by your pedal. This is a leaking Booster. Needs replacement.

When you step on the brake does the engine rpm change. This is a leaking check valve (one way air valve).

john h

  • 29494 Answers
  • Posted on Nov 26, 2009

SOURCE: gmc yukon has the abs & parking brake light

you have to fix the problem with ur brakes- first check the wiring ,connectors and connection clips to the abs sensors and modulator if looks ok than have truck scanned some auto stores such as auto zone / advanced auto do it for free the code will give u a start point towards fixing ur problem--visual inspection of brakes doesnt always show problem

Anonymous

  • 2 Answers
  • Posted on Dec 30, 2009

SOURCE: 1998 GMC 1500 4x4 4.3L ABS brake problems

Or you could just pull the fuse for the abs and not have abs but you won't wreck from pulsating pedal.

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1answer

ABS CHECK LIGHT DOESNT COME ON WHEN YOU TURN KEY ON

1. I would not be concerned because if there was a failure in the ABS you would definitely get an ABS warning light and the ABS and most likely the stability control/traction control systems (with added warning lights) will all switch off .

2. You can test if the ABS is operational. On a very quiet damp surface, straight, wide road( with NO other cars around), apply your brakes hard from a very low speed - up to 20 mph ONLY driving in a straight line - until the car stops. The front brakes should attempt to lock up under hard braking and if the ABS is operational you will feel it kick in and the brake pedal will pulsate as the ABS constantly allows brake pressure and then releases it to prevent the wheels from locking up on the damp road. If the ABS does not kick in be ready to release the brake pedal quickly to allow the wheels to rotate so you can steer the car safely. Without the ABS the front wheels should begin to lock up on the damp road surface due to the low level of tire grip. ONLY test this at very low speed and ONLY when driving in a straight line on a straight section of wide road with no other vehicles around.
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Abs for 2001 ford excape

The ABS is controlled from the sensors at the wheels . The sensors signal when the wheel stops turning and the ABS releases the brake pressure to that wheel to allow it to turn again while maintain pressure to the other brakes. It has nothing to do with weather conditions or road conditions-- just wheels turning under brakes Under normal driving and brake applications you will not notice ABS operation as it will not be working. You will only notice the ABS assistance when you are under very heavy brakes and the sensation is a pulsing in the brake pedal under your foot. Run the fault code to check for recorded faults in the ABS or have an accredited brake shop specialist check out your concerns
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My 2003 GMC Yukon XL 1500 - ABS & Traction Control lights come on every time I drive over a bump in the road

either abs sensor failing or damaged and or hub failing the abs system is incorporated into the hub have vehicle scanned most auto stores offer this service for free
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How can I stop my ABS brakes from occasionally activating even when I come to a gentle stop. I coast to a stop, hit the brake, and the front end feels like it's gonna fall off. The sound it makes is...

You can unplug the ABS, and it will be disabled. Doesn't sound like that's the problem, though. Have your front end checked, brakes, suspension, wheels, CV axles, everything. Before it cripples you on the road.
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What is abs how it function

ABS is anti-lock braking system. It is a range of four sensors which monitor the braking capability when you apply the brakes. If you are harsh and stamp on the brake pedal there is a risk of the wheels locking up and sliding (screeching from the tires).

The ABS sensors modulate the brake caliper pistons andapply and let go the brakes very quickly. This stops the tires from skidding and you will feel a pulse through the brake pedal as the hydraulic system is forced to release the pedal slightly for a fraction of a second.

As ABS stops your car from skidding it allows you to turn the steering when you are braking hard. This is good news for avoiding accidents. If you lock the wheels on a non ABS car, you continue in the direction of the wheels - unless you release the brakes and reapply quickly (same method as ABS) this is called cadence braking but when involved with a potential accident the last thing on people's minds is to release the brake pedal. Having only owned older cars, cadence braking is one method I've learned, especially from driving in the snow.

I hope this helps you and please vote for me :)
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When i suddenly apply the brakes,it gives out like a rattling noise but still comes to a halt.this is especialy so on rough surfaces'ERIC from Kenya

ABS kicks in. It's normal on a rough road with hard , sudden braking. On regular road it may kick in too with real hard stop.
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ABS not working right how do I turn it off

Sound like tha ABS motor needs relacement
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2002 yukon denali abs problem

does the abs light come on ? there was one cause on the van that i owned (ford windstar) that can happen to any vehicle. the ring that the sensor reads from can become crack. that causes the teeth to not be aligned properly. just curious... have you had your brakes replaced recently ?
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