Question about 1997 Chevrolet Suburban

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ABS light on when cold, then goes off. The brakes grab and lock when stopped and will not release without major coaxing. It seems they engage at low cornering turns acting as if the vehicle is in 4wd. Always grabbing when cold, mostly in reverse. Whats going on?

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Sounds like you have sticking caliper pistons, have you ever changed brake fluid? Replace calipers and flush brake fluid and clean ABS sensors with
ABS safe brake clean.

Posted on Feb 03, 2010

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ABS CHECK LIGHT DOESNT COME ON WHEN YOU TURN KEY ON


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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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1993 Lincoln Town car 3 years ago on a very HOT day my right front brake started violently grabbing, even without touching the brake. The ABS light comes on intermittently, it usually goes off after...


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When the anti lock brake light on my 93 lincoln town car comes on, if I am pressing on the brake at the time, makes the brakes grab. It also happens just before the light comes on. I have had the front and...


the abs light on the dash should come on when the abs is working (emergency braking)if it comes on when braking normally(gently)chances are a sensor is gone(replace in pairs,fronts & rears)
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Well most likely the brake fluid is a little low, or one of the abs wheel speed sensors is bad. Not a safety related problem exactly, but I would first make sure the brake reservoir is full, the make sure E brake is fully released. It could be that the mechanism is hanging up and causing the e brake to not be totally released. If the car free rollls when in nuetral., without the brakes grabbing and holding it back, then it could be the switch that hasn't completely switched off and is causing the light to flash ocasionally. Pull the emergency brake hanle up hard and release it quickly, to see if this makes the switch release etc.

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Yes, I never did like ABS brakes because of this. What you have experienced is the ABS system working as it is designed to do. I know, it doesn't seem like you should still be moving after slamming on the brakes, but here is how it works;
When you apply a fast and hard pedal and the ground beneath you is wet the wheels stop at different times. There are sprockets mounted to the rear of the rotors, with magnetic sensors that monitor the wheel info. for all four wheels mounted next to the brake calipers. On a hard stop when the sensor detects one wheel stopping and another still going, these sensors send "pulses" to each wheel until the vehicle has stopped without the brakes having to lock up. The pulsiing is what you experienced and is a normal part of the ABS function.
Please rate this and let me know if it helped.

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