2013 GMC Sierra 2500HD SLE 4D Crew Cab Heritage Blue Metallic Duramax 6.6L V8 Turbodiesel 4WD Allison 1000 6-Speed Automatic Remote Vehcle Starter Prep Package, Tow Hitch, Allison 1000 6-Speed Automatic, 4WD, Dark Titanium/Light Titanium Leather, 17 Machined Aluminum Wheels, 3.73 Rear Axle Ratio, 6 Speakers, 6-Way Power Driver Seat Adjuster, a 730 CCA Heavy-Duty Dual Battery for those cold mornings, ABS brakes, AM/FM Stereo w/CD Player/MP3 Playback, Bluetooth® For Phone, Brake assist, Dual-Zone Automatic Climate Control, Electronic Stability Control, Engine Block Heater, Exhaust Brake, Front Halogen Fog Lamps, Heated door mirrors, Heavy-Duty Handling/Trailering Suspension Package, Heavy-Duty Rear Automatic Locking Differential, Heavy-Duty Trailering Equipment (Retail), Integrated Trailer Brake Controller, Power door mirrors, Power Windows w/Driver Express-Down, Remote keyless entry, SIRIUSXM Satellite Radio, SLE Preferred Package, Solar-Ray Deep-Tinted Glass, Steering Wheel Mounted Audio Controls, Traction control, USB Port. Reviews: * Impressive hauling and towing capabilities; refined and quiet ride; solid build quality; responsive steering. Source: Edmunds * If you require a vehicle that can transport over 10,000 pounds without breaking a sweat, the 2013 GMC Sierra HD deserves a spot on your short list. Furthermore, most prospective HD truck buyers who place a premium on luxury will find the Sierra HD Denali worth springing for. Source: KBB.com