The 2009 GMC Yukon XL is a highly capable large SUV with seating for up to nine people. Offered in half-ton 1500 and three-quarter-ton 2500 models, it comes in SLE, SLT, and Denali trims. The standard arrangement has a 5.3L V8 that produces 310 hp, or an optional 6.0L V8 comes with the 2500 variant for additional power. The upscale Denali features a 6.2L V8 making 403 hp. All engines pair to a 6-speed automatic transmission. Both rear-wheel and available four-wheel drive models also have three rows of seating, providing ample space for passengers. Key safety features include antilock brakes, stability control, side-curtain airbags for all three rows, and OnStar telematics. Its high-tech offerings include a Bose premium sound system, touchscreen navigation, and rearview camera system.