I have, along with G6, a 2006 Trailblazer. The person I got the PCM tune from only works with GM cars but currently doesn't have a tune for a G6. They would be willing toss the idea around but would need to know that there is some kind of market. I know 2007+ are hard to find tunes for, so if you would be interested please post that you would be. Also, the tune for my other car was $199.00 after the $100 core charge was refunded.
P.S. They include more adjustable settings than Vector and its $150.00 cheaper
P.S. They include more adjustable settings than Vector and its $150.00 cheaper