Question about 2002 Chevrolet Impala
When backing out of driveway first thing (turning the steering wheel all the way to the left) the car will shutter in the front and that is when the ABS light comes on. Once moving forward the car will do it again this time lights up saying have traction control serviced then it goes out. I have replace the passanger front wheel hub assembly and had the Chevy garage check it out and reset the code it worked for about a month and then it started it again. Sometimes it feels like the ABS is trying to activate when I step on the brakes. Is there away to totally bypass this system other than the button on the dash?
I have a 2002 chevrolet impala and the same thing happened to me. abs light came on as well as my traction controll light. when i would step on the gas or brakes my car sounded like the brake pads were skiping against my rotors. i had my hub sensor replaced 5 times. the machanic kept telling me it was the part that need to be replaced.they hooked it up to have a dianostic done and the computer keep telling them to replace the hub sensor. so finally we brought my car to an electric auto shop. they found it was a loose wire that was turning my brakes on and off.(haywire)they fix my car in 30mins.
Posted on May 27, 2009
My best guess would be to look at the sensor and the wires and look for a short somewhere in that system. i had trouble with my trction control sesor in the wheel hub assembly and it was a broken wire that caused the whole abds and tcs not to work period. replaced the sensor and patched the wire and it works fine for bout 6 months now havnt had a mproblem since
Posted on Dec 31, 2008
This is probably going to upset a lot of Chevy owners that paid for expensive repairs without having their brake problems fixed. Most of the failures in the function of the Traction and Anti-lock Brakes for these Chevy's is caused by age. Each wheel hub has a two prong pin electrical connection that relaxes with age until it's impedance falls outside the sensors operating range. These rotor sensors are Hall Effect Transistors they output a a biased low voltage proportional to the rotation of each wheel hub. If the Anti-Lock computer can't see a voltage at a hub when all the others are showing vehicle speed it assumes a wheel lock up (skid) and will cause a system anomaly such as low speed brake actuation without you touching the brakes, or traction control actuating on a turn, etc. In effect the problem will usually be a connector. This would have been a safety issue but for the fact that it only occurs at low speed and does not impede stopping the vehicle. GM diagnostics will read this as a hub transducer fault, hence the expensive repair. Once you have the connectors disconnected, clean the contacts and spread the male pins with a small tool. Your brakes will work fine until the connector relaxes again. A long lasting fix is to remove the connectors and solder the sensor wires together. If the problem is with a hub transducer it is most likely due to some form of contamination that could simply be cleaned off the removed hub and then put the hub back on the vehicle.
Posted on Nov 28, 2011
I have a 2002 Chevy Impala and our ABS lite is on all the time and so is our message lite on also. Can u reset it will the radio reset it.
Posted on Aug 21, 2010
abs sensor is built into hub[bearing]common problem when changing them and or brakes r that the sensor connection is not properly reconnected or wire got damaged recheck the sensor wiring and that connector is connected to clip by strut clip is part of system
Posted on Jul 26, 2010
THE SPEED SENSOR IS LOCATED INSIDE THE HUB ASSEMBLY. THE TWISTED WIRES GOING TO THE SENSORS ARE PROBABLY AT FAULT. THE WHEEL SPEED SENSOR HARNESSES ARE AVAILABLE THROUGH A DEALERSHIP.
Posted on May 24, 2009
2005 Impala it turn off some times when I am coming to a complete stop or when I am slowing down but it starts right back up with no problem can you help me
Posted on Oct 01, 2009
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