Sierra 2500 4WD Crew CabENGINE 6.6L V8 with Direct Injection and Variable Valve Timing gasoline (401 hp [299 kW] @ 5200 rpm 464 lb-ft of torque [629 N-m] @ 4000 rpm) (STD), Locking/Limited Slip Differential, Four Wheel Drive, Running Boards/Side Steps, Tow Hitch, Bluetooth Connection, Requires Subscription, Power Outlet, Satellite Radio, Power Windows, Aluminum Wheels, AM/FM Stereo, Rear Defrost, Power Folding Mirrors, Daytime Running Lights, Power Windows, Requires Subscription, HD Radio, Driver Adjustable Lumbar, Rear Head Air Bag, Auto-Dimming Rearview Mirror, Bluetooth Connection, Keyless Entry, Power Outlet, Tires - Rear All-Terrain, Power Driver Seat, Daytime Running Lights, Auxiliary Audio Input, Multi-Zone A/C, Power Mirror(s), Cruise Control, 4-Wheel Disc Brakes, Power Passenger Seat, Bluetooth Connection, WiFi Hotspot, A/C, Heated Mirrors, Mirror Memory, Smart Device Integration, Driver Air Bag, Seat Memory, Power Windows, Tires - Front All-Terrain, Power Door Locks, Climate Control, Power Door Locks, Stability Control, MP3 Player, Security System, Auxiliary Audio Input, Rear Bench Seat, Heated Front Seat(s), Pass-Through Rear Seat, Back-Up Camera, Adjustable Steering Wheel, Privacy Glass, Keyless Start, Auxiliary Audio Input, Traction Control, MP3 Player, ABS, Split Bench Seat, Passenger Air Bag, Tow Hooks, Steering Wheel Audio Controls, Floor Mats, Fog Lamps, Back-Up Camera, Heated Steering Wheel, Telematics, Power Steering, Floor Mats, Smart Device Integration, Integrated Turn Signal Mirrors, Conventional Spare Tire, Leather Seats, Driver Restriction Features, Leather Steering Wheel, Satellite Radio, Tire Pressure Monitor, Front Head Air Bag, Front Side Air Bag, Passenger Adjustable Lumbar, Passenger Air Bag Sensor, Remote Engine Start