Question about 2004 Chevrolet Cavalier

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2004 Cavalier, Service light, ABS light, Trac Off light

My Service light, ABS light, Trac Off light stay on and makes eng run ruff (not always) Ran test, said left front ABS sensor bad. Replaced it and a few weeks later lights still on? Replaced breaks all around to include drums and rotors and both front calipers. Disconnected batt. for 10 min. nothing the lights are still on? Car is at it's 100,000 mile mark, would that have something to do with it? Does it need to go to dealer to turn off??? I have a 2004 Chevrolet Cavalier that no one has been able to properly diagnose the problem. The ABS, Trac off, Check engine light and Service lights are all on. The brakes have been replaced. Last time it went to the shop the mechanic said probably the alternator.The new alternator was done and the lights went off for a day after putting in the new alternator, but have all come on again. Also every once in a while the car seems to have power surges--like the headlights will dim, and the windsheild wipers will slow. I would like to get an idea what is wrong before I bring it to the dealer.

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  • 66 Answers

Are you using a gel based battery?
Sounds like an overload on the charging system screwing the whole electronics of the car.
If not - get it diagnosed at a dealership.
Sorry.

Posted on Jul 11, 2009

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How do I turn off my service, abs, and trac off lights off and why would they be on? I have a 2004 Chevy Cavalier with the 2.2 Ecotec engine


Service light can be turned if with an OBII scanner (Autozone or any good parts store can reset service light for FREE) The ABS & trace control lights are in because you have a wheel sensor(s) that are bad - replace bad sensor and then a certified shop or dealer has to reset ABS light (EXPENSIVE TOOL)

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you will have to check the abs wiring harness. the wires going to the wheel speed sensors are more than likely broken setting the code and turning the abs light on. hope this helps.

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2004 Cavalier-ABS and Trac light warnings


no you need to take it and have the codes pulled on it, the abs system will disable the traction control system.Without knowing what the codes are for the abs system it would not be possible to say what the problem is.

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"...should not have to have to deal with these issues"

Agreed! But, there seems to be a glitch involving the ABS and TRAC system. On my 99 GAGT, when the eng and tranny are cold, I tend to get an ABS fail during turn/brake instances. If I restart the engine, it generally goes away. I've done a bit of research and have found nothing that fives a definitive answer to this. If you take it to the dealer, it will cost an arm and a leg for the troubleshooting alone. I'd recommend driving it as is provided you can get the ABS to reset by restarting the engine.
Sorry I can't provide any better solution...

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2004 Cavalier, Service light, ABS light, Trac Off light


It is the wheel speed sensor jumper harness more than likely on the driver side. They replaced the orginal with a newer better one but never issued a recall.

Jul 11, 2008 | 2004 Chevrolet Cavalier

1 Answer

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I had the exact same problem with my 2004 Cavlier. I took it in and the dealer said it was a voltage problem with my speed regulator located in one of my wheel bases. I had it replaced under my extended warenty. I suguesst taking you car to a mechnanic as soon as possible, cause it could be that sensor, or an electrical issue all together. Especially if it is that sensor, since it effects your braking system, traction system, and the overall drivability of the car. 

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Sometimes it's a complaint with the ABS braking system. If it comes on and you have no other problems and stays on for while, check your brakes. I have had this issue before and had my brakes replaced. They were worn but for some reason were not squeaking.

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