Next-gen airbags, several new body colors and a new traction control in the GTP model marked the only changes in 1998 for the Grand Prix ... was in store for 2004, boasting a sleeker body style and a ...

Read more: Every Ford EcoBoost Engine Ranked Worst To Best Prior to GXP, Pontiac's Grand Prix performance model was called the GTP. GTP stands for Grand Touring Prototype, and is derived from an ...

This designation was featured on select Grand Prix and G6 models with more robust engine output. Pontiac GXP was the performance trim that replaced the GTP and was available on several cars as ...