For maximum people-hauling ability, the 2012 GMC Savana Passenger van offers up to 252.9 cubic feet of interior space. With LS and LT trim levels, standard features on the 2012 Savana Passenger van include OnStar, 17-inch wheels, air conditioning and General Motor’s StabiliTrak system. With 1500, 2500 and 3500 variations offered for the 2012 GMC Savana Passenger van, interior accommodations vary between 8, 12 and 15 passenger seating. Engine options on the 2012 Savana Passenger van ranges from a V-6 powered gasoline engine to a 6.6 liter turbo-diesel powerplant. A 195 horsepower 4.3 liter V-6 and a 5.3 liter V-8 producing 310 horsepower are found on the 2012 Savana 1500 model. 2500 and 3500 models of the 2012 GMC Savana Passenger van two gasoline power plants, a 5.3 liter and 6-liter V-8 offers up to 323 horsepower through a six-speed automatic transmission. A 6.6 liter Duramax turbo-diesel engine producing 525 pounds-feet of torque was first made available on Savana 3500 last year. All-wheel drive as well as heavy duty battery and locking rear differential is optional.