Jesse Bubb over at Wait4MePerformance.com is really good to deal with, and has FAST service. He specializes in GM vehicles. You can either buy a complete tuned computer from him, or send him yours with return shipping payment, and he will tune it and send it back same day pretty near.
Like I said, awesome guy to deal with. 90% of us (over at s10planet.com) use him for custom tunes. Not one bad thing to be said about him.
You can do a youtube search for wait4meperformance and see some of the tunes he's done. He did my 05 Jimmy, $200 for a complete computer tunes and shipped.
Jay
