Mechanics

ABS KICKING IN AT LOW SPEED CHEVY VAN AWD

2000 Chevrolet Astro • 6 cylinder AWD Automatic • 61,000 miles

Have put on new brake pads and rotors, and a new Hydro Booster, also new tires and alignment. Still doing.
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JKI
June 13, 2011.



For the ABS to kick in at low speed, the most likely causes are the sensors or control unit. You would need appropriate scan tools to monitor and diagnose the problem.

Have you tried to check for trouble codes?

KHLow2008
Jun 13, 2011.
I was told they checked the sensors when I had new brakes, rotors, tires, alignment and Hydro Booster installed.

Tiny
JKI
Jun 13, 2011.
Sensors could be good but if the sensing gears are dirty/covered with dirt, it can result in improper readings and cause the ABS to activate.

KHLow2008
Jun 13, 2011.
What are the sensing gears? Where are they located?

Tiny
JKI
Jun 14, 2011.
They are located on the axle shaft and wheel hubs, behind the rotors/ brake drums. They are for telling the wheel sensors that the wheel is turning or stopped.

KHLow2008
Jun 14, 2011.