The 2005 GMC Envoy XL is an extended length version of its sibling, the GMC Envoy. The XL is offered in SLE, SLT and Denali trims, in two and four wheel drive configurations. The XL offers third-row seating, with passenger capacity for up to seven and plenty of cargo room for hauling gear. Engines range from a 275 horsepower 4.2-liter inline 6-cylinder to a 300 horsepower 5.3-liter gas-powered V8, with a 4-speed automatic transmission as standard. The XL comes equipped with front and side-head airbags, ABS brakes, auto on/off headlights and traction control.