Major changes included: The seventh generation Grand Prix is offered in base Sedan and GXP trims. A 3.8 liter V6 powers the sedan, while the GXP is propelled by a 303 horsepower 5.3 liter V8. The base model comes with 16-inch wheels, OnStar, a CD player, cruise control, air-conditioning, keyless entry, and power windows and mirrors.






