Abs problem?? Please help!

[myguy99]

I have an 02 tahoe LT with autoride, for some reason for time to time I'll come to a stop and won't be but just idling sometimes the abs kicks in as if I'm on ice even on dry pavement!!?!?!?

I'm lost, no check engine or service light on at all any ideas???


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[SLCHOE]

One of the wheel speed sensors is faulty. You'll need a scan tool that can display "live" ABS data to determine which one it is. You compare all 4 sensors' RPM signals to each other as you drive in a straight line, coming to a stop. One of those signals will be erratic. Most common causes are faulty sensor, corroded sensor mounting surfaces and bad wheel bearings (excessive play). If you don't have a scan tool, get under the truck and check all of the wheel speed sensors for wiring issues and corrosion around where the WSS mounts. If nothing is evident, jack up each wheel and grab the tire at the 12 o'clock and 6 o'clock positions and check for play.