The 4.2-liter six-cylinder engine that comes on the 2008 GMC Envoy is smooth and powerful, and it's a perfect companion for the4WD. This engine is a modern inline-6 with dual overhead camshafts, four valves per cylinder, and variable phasing for the exhaust cam to produce 291 horsepower and 277 pound-feet of torque. The GMC Envoy is an excellent choice among midsize sport utilities. Envoy is well-engineered and enjoyable to drive, stable and responsive with good brakes., , Call us today! --262-654-6500-- Guaranteed Credit Approval!