Check how the wheel speed sensor cables are routed. Be sure they have not been damaged by road debris or other mechanical damage due to improper routing. For example, melted by touching exhaust or abraided from a suspension component.
Both answers are correct but also look for a weak or broken bushing on a control arm or spindle these systems are very sensitive and even a slight give in one of the bushings will cause the traction control to activate also if tires are not the same tread they will grab different if you put a spare on of different tread or its more /less than then the rest of the tires this will cause uneven traction this is happening on take off so it also could be a drive axle cv joint is failing check all of these listed /////strut bushings and mounts /cv axles /tires / track bar bushings /stabilizer bar links a dip will activate the traction /stabilizer bar bushings also /lower control arm bushings /trailing arm bracket /subframe bushings/inner and outer tie rods /ball joints any of these will cause either a slight give or a dip that will create uneven traction for a split second and will cause the flash activation of the traction control module and also a speed sensor go to rockauto.Com and look up your vehicle and then all the parts mentioned here if you don't know what they look like so you can see what your looking for
Go back in and double check both hubs. Make sure the axle nut did not loosen, the wire orientation is correct and did not get cut or damaged. The wire routing is important. If it isn't routed correctly it will get torn, pulled on, pinched or cut. Your recent repair could be causing your flashing light. If you find nothing wrong with the installation have the vehicle's ABS/TCS scanned and read. It could be a coincidence and not related. A traction control system failure will affect transmission performance.
Wheel speed sensor circuits are critical to the traction control system. I, myself, was fooled by one of these. I replaced the wheel hub and the problem still existed. Found a broken wire in the harness that is mounted to the control arm. Fixed with solder and shrink wrap. Problem is gone. Good luck.
SOURCE: 2002 Chevy Impala Traction control /ABS problem
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.
SOURCE: Feels like my impala is slipping while driving
the traction control in built into the transmission...there for you have a fualty transmission
SOURCE: ABS light and Traction control light stay on.
That "grindy" feeling is when the ABS kicks in. It's only suppose to activate when you slam on the brakes and the wheels would normally lock. Instead, ABS will very quickly pump the brakes on and off, to prevent the wheels from locking (making a giant skid mark) and stopping the car more effectively. Generally this only happens if you slam on the brakes or loose traction due to rain or snow while braking. If this is happening often and the brake light is on, on the dash, then you need to get this checked out by a qualified mechanic ASAP.
SOURCE: 2002 buick lasabre ABS light comes on and
NOPE IF ABS LIGHT IS ON AND YOUR BRAKES DONT FEEL RIGHT.HAVE IT TOWED.DONT DRIVE.
SOURCE: 2001 impala- Traction, Abs, Brake lights on
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
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