Where might I find the internal differences between all the engines offered for 09? IE: 2.0 turbo, 2.2 now w/VVT, & good ol 2.4. Ordered 08 SS , didn,t like it (or buy it)as well as my 06 LT, but there are so many improvements in the 09 line that I might not be able to resist.

 

You can start here: http://media.gm.com/us/powertrain/en...009a/09car.htm

The 'WN' link is what's new in the power train for '09.

Also here: http://media.gm.com/us/chevrolet/en/...cks/index.html

This describes overall model differences between 08 and 09.