Don't expect to get much if anything for your Aveo. They are cheap and unreliable and expensive to fix. I know this because I am stuck with one too.
You have a problem with the emessions system. You need to correct / fix the problem that made it come on in the first place. Then the light will go out.
replace cat
Start with replacing the thermostat.
change your o2 sensor
I've got a better question, why is this question in the Chevy venture forum ?
Start with looking for a vacuum leak.
you stick some plastic explosives on it and run
Check for a blown fuse.
Need more info-the intake is a hunk of plastic with holes and no moving parts- a related sensor-injectors, MIL light on-codes. . . . .etc
pull the intake and fix the secondary runners
P0121 Throttle/Pedal Position Sensor A Circuit Range/Performance IvryJade writes: Yes, but how do I fix it?