2004 Cavalier-ABS and Trac light warnings

scan system for codes and let me know

Very common problem with GM vehicles. It's usually caused by a bad wheel speed sensor. Get the trouble codes read so you know which wheel is causing the problem. Then do the diagnostic. Getting the trouble code is ALWAYS the first step.

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The ABS and traction off lights usually indicate a bad wheel speed sensor. I can't remember if the service light came on the three times mine went. The most common one to fail is the left front.

Try this cheap fix first.

Remove the left front wheel speed sensor, clean and reinstall it. They are magnetic and some times road debris will block the sensor. If that was the problem the ABS and traction lights will go off when you start the car.

Your second option is to have the shop scan the vehicle trouble codes, usually this costs an hours labor.

Hope this helps

check the abs sensors and connections of the sensors also that the sensor connection is attached to the clip[part of the circuit if wiring and connections are good then have car scanned most auto stores such as auto zone / advanced auto do this service for free check ur local area the trouble code will pinpoint ur problem so ur can repair ur car

yes go to the junk yard and match up the plug in with the same engine size it dont have to be the same year

Possibly the clunking noise may be your control arm bushings being bad. As for the check engine light, get the code read and go from there.

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.

when any kind brake warning lights come on.it warning you that you have brake failure.have it towed in .not safe to drive they have to scan it to check abs and trac system.you cant do much at home.far as working on it.garage has to use special equipment to work on abs brake system.

YOU HAVE A PROBLEM WITH THE ABS SYSTEM.CAR SHOULD BE SAFE TO DRIVE YOU WILL NOT HAVE TRACTION CONTROL OR ABS BRAKING

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.