2003 Grand Am, ABS, Trac off, and Service Engine Soon warning lights on

[Kerrie67]

I have a 2003 Grand Am, 6 cylinder 3.4 L engine, Automatic transmission, it has 41,746 kms on the odometer. The following warning lights are all on - ABS, Trac off, and Service Engine Soon. The Air Bag one was on but is now off. What would cause this?

[Ridenour]

There are two things that could cause this:

1 - Bad wheel bearing

or

2 - It has a bad sensor and thinks that it has a bad wheel bearing - happens lots in the winter when the wheel gets shocked by stuff (ice chunk, ect.) - if you have a bad sensor, lots of times they'll get jarred by this and send a bad signal.

So it could actually be a bad wheel bearing, or it could just be a bad sensor.

[Kerrie67]

Thank-you for the info, I just wanted to have an idea of what the problem is when I take her in to the dealership tomorrow.

[Ridenour]

No problem. BTW, if it was a bad wheel bearing, you would've most likely heard it rumbling at certain speeds. My guess is, especailly since it's during the winter, that it's a fault sensor.