SOURCE: 2002 2WD CHEVY TAHOE ABS
Its possible that right wheel speed sensor is dropping out early making the truck think that wheel is locking up. That will activate the ABS and let the brake go on the right wheel which will make the vehicle pull slightly left. The only way to know for sure is to watch the wheel speeds on a scanner and see which one is drpping out first and replacing that speed sensor/bearing assembly.
good Luck
SOURCE: Truck won't start right away when its hot.
U MAY HAVE A DEFECTIVE ENGINE COOLANT TEMP (ECT) SENSOR, U NEED A SCAN TOOL TO TEST THIS PART, THIS IS NOT THE SENDER FOR THE TEMP GUAGE THIS IS THE SENSOR THAT TELLS THE FUEL INJECTION COMPUTER HOW COLD OR HOT THE ENGINE IS, IF IT READS LOW THE SYSTEM WILL GET TO MUCH FUEL AND CAUSE A HARD START, DO U NOTICE ANY BLACK SMOKE WHEN IT FINALLY STARTS?
SOURCE: 2000 GMC Sierra 1500 ABS and Brake lights
Have you by chance checked your fluid? If not, you may want to do that, it could show that you need brakes if it is low. If that doesn't do it, the mechanic may be right about a sensor, but just the wrong one. Hope that helps.
SOURCE: HOW TO REPLACE OR REPAIR WHEEL SPEED SENSOR
It is part of the bearing hub assembly.Very have to do without air tools,If setting multiple abs/tc code (wheel speed sensors) probably abs electronic module or chaffed wires on drivers side at ac lines by air box.Have big problems with this and probably will come back.
SOURCE: 1995 GMC Sierra Z71 ABS light stays on
yo man, idk if this is exactly what your problem is but my 1991 gmc sierra was doing the same fuckin thing and ****, and i took it to the gm dealer and had them look at it and my connectors and my ignition switchs were fried, also my truck was having a problem shitfing once those went but i also had that problem, perhaps yours is somehwta liek that as well... hope i could help
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the abs is engaging at low speeds as well.
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