Question about 2004 Chevrolet Monte Carlo
The abs makes the traction control work so fix the ABS first. The most common thing thea haqppens are the wheel speed sensers fail. In the front wheels the speed senser is incorperated into the front wheel bearing. these bearings are well known to fail at about 100 thousand miles and can fail aqs early as 80 thousand miles and most all of them fail before 140. You might notice a roaring sound ( like noisiy treaded tires) You can jack up one front wheel at a time and get in the car as your driving it and put the car in gear and run the car ( not moving but thwe trie is turing and listen for noise. I fht e wheel makes a roaring sound that gets worse as you go faster that wheel bearing is bad. Don't go over about 50 as with one tire on the groung the other that is turning, is going twice that fast or 100 MPH at 50 on the speedometer. Do the same test on the other wheel and if it's quiter or quite just change the noisy one. Once changed you just drive the car and the new wheel speed senmser will be reconized and the ABS light will go out as will the trac off light. If your ready to change both wheel bearings do so as they both have the same miles on them just not nessarily the same potholes and other rough pavement that makes them wear out faster. If thebearings are quite then you need to inspect the wires coming outr of the back of the wheel bearing.. Thjese wires get into troble and get unplugged or break the wire. If you havwe asscess to a scasnner that will address ABS systems it'll point out the ABS problem. Things that happen other than the wheel speed sensers are fuses blown for other reasons. The accumulater motor failure or extreamly cold weather the accumulate motor locks up in cold and blows the fuse. Thwe motors seldom fail but they can and do. Some veicals are nerer serviced and the brake fluild accumulates moisture ( as it's supossed to) and peaple never get the brakeing system seviced and the old brake fluild can freeze in cold weather and start croduing things. The Traction control sysem uses the brakes to control wheel spin by puting on the brake on the spinning wheel. If the system notices a wheel spinning. (Using the wheel speed sensers) So until the ABS is fixed don't try to fix the traction control system as it truly is part of the ABS systyem.
Posted on May 18, 2011
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Posted on Jan 02, 2017
I have had exactly the same problem on and off for 3 years now - and just solved it last week thanks to another computer site. Remove and disassemble both grounds from the top of both the left and right frame rails adjacent to the front corners of the engine block. Completely clean the green corrosion from the internal parts with fine sandpaper and add dielectric grease then re-assemble. Clean the mounting bolt and frame hole while you're at it. Sounds time consuming and difficult, but it ain't. No more than 45 minutes combined. I am a technical airhead so if I can do it so can you. What clued me in was the problem always occurred around wet or humid weather. Also, the clock would always lose time overnite. That has ceased also. Good luck. Anyone know why my left headlite, when deployed, vibrates and shimmys??? Sully firstname.lastname@example.org
Posted on Jul 07, 2009
I had the same problem. I took off the tires and look at the wires, and both of the wires to the hub were broke. 10 min and some tape and problem was fixed.
Posted on Apr 02, 2009
Sounds like you have a bad wheel speed sensor. You need to have it scanned. Since it's been sitting, it might just be a bad connection to one of the speed sensors.
Posted on Jun 02, 2009
SOURCE: abs light/traction control light
You can check out what the trouble code is by pushing and holding the information button and the up arrow (right side of instrument cluster above the radio) until all the instrument clusters light. Press the information button (last) to enter test mode. I've had an error C1234, meaning Left rear wheel sensor fault. I found the problem to be a corroded connector under the chasis just under the rear left door about 2 feet in. I had to by-pass (replace 1 wire due to corrosion at the connector.
Posted on Sep 15, 2009
Traction control only works when one wheel is spinning faster than the other it trys to even them out so it wont spin...sometimes if one of the wheels come off the ground in an uneven area or if you take a turn too fast and one wheel turns when the other one dont it is designed to operate.
I would remove all wheels and check the braking system...Is it 4 wheel disc or rear drum ?
If it has rear drums you could have a wheel cylinder leak that will sometimes lock the wheel because of fluid contamination....This would cause both lights to come on...If you find no problems
sometimes the abs sensor builds up fragments on the magnet and makes the light come on...
or if the abs sensor is not close enough to the exciter ring it will make the light come on because it will be out of adjustment.....all you do is press the sensor inward until it barely touches the ring and it will adjust itself....You can sometimes clean the magnet if it is contaminated and make the light go off ( only after you reach 6 to 15 mph. it will go off ).If it dont go off you have to buy a sensor.
Also make sure all tires have same amount and plenty of air to keep vehicle in balance/level.
Posted on Feb 21, 2011
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