ABS Warning Light On and/or Erratic ABS Operation on GMC Suburban 1500

The anti-lock brake system (ABS) front wheel speed sensors are prone to failure. When a sensor fails, the ABS warning light may illuminate and/or the ABS system may activate erratically.

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Average mileage: 120,833 (66,000–174,000)
9 model years affected: 1991, 1992, 1993, 1994, more1995, 1996, 1997, 1998, 1999
31 people reported this problem
16 people shared problem details
i have had the same problem, the anti lock brakes seem to be engaging all the time. my mechanic says not to worry about it that it is just the sensors that are failing. he says it doesn't need to be repaired as long as you don't mind living with the anti lock brakes engaging all the time. but i read on line that maybe i should be concerned. what should i be doing.?
truck does not want to stop with light pressure have to push harder which causes brakes to lock up(only at low speed. left bearing of 4x4 has been replaced. when brakes are pushed on a sudden stop brakes tend to lock up. on slippery roads abs seems to work. abs light does not come on. not fixed but suspect the master cylinder.
anti lock brakes activating at under 10 MPH , makes noise and brakes dont work properly
can't stop the truck, abs kicks on and feels like the rear brakes not even working, truck keeps going
erratic operation of the left front brake on a 4 wheel drive.changed calipers and brake lines also rotors and pads. problem still existed so the left caliper slide pins and bolts were changed. still somewhat of a problem but still evaluating results.
My truck would not stop right away. It made some strange sound then my ABS light came on. As long as the light is on the truck stops ok, but when it is off it will make that noise until it comes on.
ABS initiates at slow speeds, even on dry pavement. Extends stopping distance. Mechanic says will need to replace wheel bearings on front at about $500 per side. says it is dangerous that it may cause the auto not to stop at slow speeds. I need to check out the recall from GMC
ABS is falsely triggered at low speeds, making it difficult to come to a stop appropriately.
abs activates at slow speeds. no light on at dashboard.
ABS comes on at low speed
ABS works intermittently, brake light comes on, speedo erratic
when stopping ever thing is ok until 1 0r 2 mph peddle fill hard and some time exstremely hard to stop
Breaks want to push you through red lights and stop signs.
Had the brakes torn down twice. Dealer said that it was road grime giving false alarm and to take suburban to car wash and wash wheels well with hot water. Have 200,000 miles and has not caused any problems. Washing wheels solves the problem until wheels get dirty again ~
abs light came on long distanse to stop vech sounds like abs kicks in when trying to stop rear wheels lock up at the slightess brakeing very hard to stop i own a 1999 gmc sub anyone haveing this promblem serveral mechanics tried to fix promblem but was not successful it always goes back to doing the same thing
replaced front wheel hub unit and not at 10 mph brakes jeck and pedal kicks back at you
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