I am trying to update my tuner from the website, in doing so I am also re-tuning my truck. I have looked through the forums and have not found what am looking for. I know that there is a post somewhere on here about how to tune your vehicle, it was a how to type post, and I beleive it was a post for either an Avalanche or Monte Carlo. Does anyone have this post saved somewhere? Any help would be greatly appreciated.