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Question:

Cant find why my ABS light comes on Mechanic gives three different causes?

I have a 2001 Impala, and my ABS light comes on sometimes when driving and stays on until the car is off. Today I took my car to three mechanics, first a place called tuffy and they told me its my front left wheel bearing and its going to cost my $365 to replace. The mechanic told my this would take care of the ABS light. I then went to Midas for a second opinion, and was that I would have to replace parts on my Brakes and they were going to switch them around only costing my $60. I then went to a third auto shop and was told all I need is a new wiring for the ABS this would cost $61.00. All three had different reason for why my ABS light is on. My light comes on when it wants to and have not been on since this morning, so what could cause this problem?I also hear no loud noises when I‘m making a left turn so could the Wheel bearing still be the problem?Should I just take my car to the dealership?

Answer:

What they instructed you ought to be outstanding. The mechanic might have brought about the undertaking with the open circut IF whilst changing struts he allowed the brake assembly to hold loose. this could positioned undue rigidity on the electrical powered connection for the a.b.s. sensor. With that being reported the sensor isn't that stressful to swap and is in no way well worth paying $3 hundred for somebody to do it. the finished technique takes all of roughly 10-quarter-hour and doubtless $60-$70 if that in the time of aspects.
when i was 15 my dad finally let me ride his DRZ400 enduro bike on a desert trip. i was so excited, ive ridden little things like a CR85 and aTTR125 before but nothing like this. so i was going great and came to a kinda steep hill and powered up the trail, but there was a long rut running down the trail (probably from rain). i needed to get on the other side and when i tried to the front tire dug in and turned sharp to the right, making me fly off the bike. i was fine just got back on. i got a trophy too, the broken cluth lever! i still have it too.
About 30 years ago, I was riding a friend's 650 cc Triumph Bonneville chopper. I laid it over in gravel, and really chapped my friend. I also did the RidersEdge course recently, and laid down a Buell Blast in the weaving course. Low speed stall the instructor said. I was pretty embarrassed, but before the course was over, I had lots of company. One guy even laid one down in the quick stop final test.
Other poster is correct, there is a known issue with the wheel bearing/sensor and the wiring harness. I would use a snapon vantage or some other type of oscilliscope and do waveform testing right at the sensor itself before replacing anything.
ABS is a safety feature using a computer to monitor wheel spin. The basic function is to not allow a wheel to lock up causing loss of friction that can cause loss of control. In my 2001 Audi TT the system is integrated with other functions all related to wheel spin such as when the car starts to move from a dead stop. It is called Electronic Stability Program. This system also works while actively driving and not using brakes, just steering, such slippery situations on gravel or mud, to keep the wheels moving. ABS is all cars has a program to monitor the functions or ability to brake/release each wheel as well as the health of the computer. If values are not met or exceeded the ABS warning light is illuminated to warn the operator of needed repairs. We have three different opinions from three different shops. I do not know where you live and of the type of auto repair shops around. You ask as to Chevy dealership. It is always recommended to go to the dealership in case of a difficult situation ONLY IF that dealership has a good reputation. A good shop would hook up a diagnostic tool and read codes and interpret the reported codes. I could not understand what you mention as a noise. That is puzzling. Do what you wish but do not ignore this.

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