Service Engine Soon Light

A little problem, I accidentally triggered my SES light today, and can't get it to turn off. I've tried a few different things that are susposed to turn it off, but so far no luck. Do i need to bring my car in to have it reset?

this is on a 2002 GT

Autozone and Advance auto have scan tools that can reset it. They do it for free. You could also buy one for yourself. New they go for around $140 and on ebay they're hitting $105.

I'll keep them in mind if I run into this problem again. The light turned off on it's own a few days later, and I brought the car to the dealer today. By me triggering the light came out to be a good thing, since GM just posted a bulletin last week about certain trouble codes, (mine being one of them) which they move some wiring harnesses that could cause the code. All i can say is perfect timing!