That noise you hear from California is burbling from the quad exhaust outlets of Pontiac’s hottest Grand Prix in nearly two decades—the 2005 Grand Prix GXP. The GXP’s 5.3-liter, 290-hp, 325-lb-ft V8 ...

Prices shown for the used 2007 Pontiac Grand Prix Sedan 4D GXP (V8) with NaN miles are what people paid to buy this vehicle or what people received when trading in this vehicle at a dealer. Edit ...

General Motors introduced the LS4 engine in 2004, but what cars had it under the hood? Here are the models and how much ...

Despite record-breaking gasoline prices, there's room in Pontiac's high-performance GXP portfolio for another member--the G8 GXP, which rolls out at next week's New York auto show. The G8 joins the G6 ...