I have an early 2007 LBZ Duramax that has had poor performance since it has been new. I have programmed it with the U7186 and the R06 program and it is bearable.

I have taken into the dealer with no results. Is there a place to find the issues with the Duramax and the calibration changes listed out ...

My truck ran away and knocked badly on the 1.8 flash rev. Is is safe to load the 1.9 rev>