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The new engine has an improved direct injection and a cylinder deactivation system (Active Fuel Management), which deactivates two cylinders to improve fuel economy.
The engine is combined with the 8-speed Hydra-Matic 8L45 transmission, developed by GM, which has practically the same size and weight as the one it replaces.
The top Denali version features 20-inch wheels, chrome parts in the interior, while the All Terrain X version features a new suspension, a hill descent system, 17-inch rims and all terrain tires sized 255/65.
