The 2011 GMC Yukon XL is a large-size SUV that offers plenty of power and cabin space. There are three trims for this model: The SLE, SLT, and the high-end Denali. The base engine is a 5.3-liter V8 that produces 320 horsepower, while Denali models come with a 6.2-liter V8 that generates 403 horsepower. Both engines feature a six-speed automatic transmission. Rear-wheel drive is standard, with an optional all-wheel drive. The 2011 Yukon XL can comfortably seat up to 9 passengers across three rows, with a generous amount of cargo space. Key features include automatic climate control, Bluetooth capability, satellite radio, and an optional navigation system. Safety features include anti-lock brakes, stability control, front-seat side airbags and full-length curtain-type airbags. The 2011 model year did not see any major updates from the previous year.