2001 Chevy Astro malfunctioning brakes

ASTRO123

MEMBER
2001 CHEVROLET ASTRO
6 CYL
AWD
AUTOMATIC
113,000 MILES

Intermitten malfuctioning brakes. When slowing to a stop vehicle looses brake pressure. Mostly when turning. (Peddal goes to the floor, vehicle does not stop) ABS occassionaly pulsate when stopping for no apparent reason based on road conditions.

power steering pump has been replaced, sensors have been checked and are o.K.
All callipers and brake pads have been replaced.
there are no errror codes or ABS idicatore lights are NOTactivated. The ABS computer has been checked, it registers 3MPH AT ZERO mph.

1 Reply

MASTERTECHTIM

MECHANIC
4,749 POSTS

You have a bad wheel speed sensor or hub bearing. Have the wheel speed of each wheel rechecked, one is dropping off before the rest, trust me. If your current mechanic cant find which one then find another mechanic with perhaps a faster scantool to read the data. It should be fairly easy to pinpoint the suspect wheel. You can unplug the abs pump motor and this will make the no brakes problem go away until you can find the bad wheel speed sensor, you will run only on regular brakes but its better than malfunctioning abs brakes. Let me know how you make out