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2001 Chevy impala ABS problem
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Guest
Anonymous Poster
Feb 25, 2007, 7:58 PM
Post #1 of 2
(4958 views)
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2001 Chevy impala ABS problem
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Ok thanks in advance for your help
Have a 2001 Chevy impala. Today, i was driving and heard a sound like the ABS was applying very very briefly and then the ABS light comes on and stays. I pulled over and turned the car off and then turned it back on. Everything seems normal for about 1 minute of driving and then it did it again. A very faint sound and then the ABS light comes on and stays on. ANY IDEAS??? I would greatly appreciate it.
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DanD
Veteran
/ Moderator
Feb 26, 2007, 6:13 AM
Post #2 of 2
(4954 views)
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Re: 2001 Chevy impala ABS problem
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I’m not saying this as a certain but GM has had a lot of problems with wheel speed sensor’s dropping out. I don’t mean actually falling off but the sensor dropping out its signal to the ABS module. When this happens it causes a false ABS activation; when the module cannot correct what it thinks is a possible skidding wheel; the module will turn off the system and turn on the light.
When you turn the vehicle off and then restart the module does a self-test doesn’t see a problem and allows the system to run. That’s until whatever wheel does its thing again.
You’ll need to have the system scanned to give you a direction to go in, as to find the actual problem.
The short wiring harnesses that leaves the wheel and goes to the main harness also have been a problem with intermittent bad connections. So be careful not to condemn a wheel speed sensor until the harness has been checked thoroughly.
If by chance this does turn out to be a wheel speed sensor, you’ll end up buying a wheel bearing assembly because the sensor is built into the hub.
Dan.
Canadian "EH"
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