The 2009 G6 is a 2- or 4-door, up to 5-passenger convertible, sports car, family sedan, or sports sedan, available in 6 trims, ranging from the Sedan to the GT Convertible.

Upon introduction, the Sedan is equipped with a standard 2.4-liter, I4, 164-horsepower engine that achieves 22-mpg in the city and 30-mpg on the highway. The GT Convertible is equipped with a standard 3.5-liter, V6, 217-horsepower engine that achieves 17-mpg in the city and 26-mpg on the highway. A 4-speed automatic transmission with overdrive is standard on both trims.

The 2009 G6 is a carryover from 2008.