GM has redesigned the 9-passenger Yukon XL & Yukon XL Denali to make them more competitive in the full-size SUV market. The exterior styling has been tightened up for a more contemporary look, while the interior has been updated with improved materials and build quality. Stabilitrak(R) stability control is standard. The standard 320-bhp 5.3L, and optional 355-bhp 6.0L V-8 engines have Active Fuel Management(TM) (formerly known as Displacement on Demand.) Active Fuel Management(TM) allows the engine to run on 4-cylinders under light load conditions, for improved fuel economy. The Yukon XL Denali gets the 380-bhp 6.2L V-8, a 6-speed automatic, slightly different styling, and interior trim upgrades. Maximum towing capacity is up to 8,100 lbs.