GMC Sierra 3500

 The Sierra 3500 HD is the ultimate luxury workhorse. With its high-line interior, maximum payload capacity of 7374 pounds, and trailer-towing capacity of up to 23,200 pounds, it’s the Taj Mahauler. There are three cab styles, two bed lengths, and three engines: a 6.0-liter V-8, a 6.0-liter gas/CNG V-8, and our choice, the 6.6-liter Duramax turbo-diesel with the Allison transmission. While you’re at it, go for the over-the-top luxury of the Denali. If you’re high-rolling, why not go all the way?