See also:

Running the Vehicle While Parked
It is better not to park with the engine running. But if you ever have to, here are some things to know. WARNING Idling a vehicle in an enclosed area with poor ventilation is dangerous. Engine ex ...

Under the Hood
A 3.5-liter V-6 produces 201 horsepower in front-wheel-drive Terrazas, and 196 hp in all-wheel-drive models. The new 3.9-liter V-6 features variable valve timing and develops 240 hp and 240 pounds ...

OnStar®
If equipped, this vehicle has a comprehensive, in-vehicle system that can connect to a live Advisor for Emergency, Security, Navigation, Connection, and Diagnostic Services. See OnStar Overv ...