The Tuning School - GM 6L80/90e Transmission
This guide will give you the transmission performance you have always wanted, with an easy step-by-step method you can follow. You can make the transmission shift on time, and as firm as you want – the difference is night and day! Several students have already seen improved performance from following these easy steps. One student with a 2009 G8 GT saw a 0.3 second ET improvement with these changes.
A customer commented on experiencing tire-barking improvements that they never thought possible. This tuning guide has been crafted through months of research and thousands of development miles on our test vehicles, a 2008 Chevrolet Corvette with the 6-Speed Automatic Transmission and a 2009 Pontiac G8 GT with the 6-Speed Automatic Transmission. This 35 page guide includes step-by-step instructions with full color photos from HP Tuners VCM Editor screenshots