dying car and dummy lights

I'm having a problem with my 2004 Cavalier with a 2.2 ecotec engine. Especially when first started, if I turn the wheel it starts to miss out and it will say Low Trac on the dash. If this continues, the Service Engine light, ABS, and Trac Off service lights come on. The dealership ran a diagnostic and said it was the throttle positioning sensor making it miss and the wheel speed sensor making the lights come on. Both of these have been replaced along with the idle air module and the problem is still there. The car only has 26,000 miles on it, but it is not under warranty due to age. I'm out of ideas, any help would be appreciated. Thanks.

Matt

First test the battery. A bad battery will do this . Then look at the battery cables for loose or corrossion. Then the wires from the battery to the fuse box and then to the ignition switch for loose or corrossion.

Thanks, however it is a new battery and this also happens after I have been driving it for awhile. When I go to pull out into traffic, sometimes it will hesitate and miss and when it does this the lights come on also. This has really been baffling me. I wish it was an old car, I hate all this computer stuff.