The 2013 Chevrolet Silverado HD 3500 represents the pinnacle of capability and brawn in a Chevy truck. As the name implies, HD models—it's shorthand for heavy duty—are designed for serious hauling and towing tasks that demand more muscle than your typical full-size pickup can muster.
The HD 3500 starts with a 6-liter Vortec V8 putting out 322 horsepower and 380 pound-feet of torque. Add to this the standard Z85 Handling/Trailering Suspension, and you have truck with a 7,222-pound payload capacity and the ability to tow from 13,000 pounds to 23,000, depending on equipment. As if that's not enough, the optional 6.6-liter Duramax turbo diesel with its 397 horsepower and 765 pound-feet of torque can pull up to 24,500 pounds.
The Duramax is paired with a heavy-duty six-speed automatic transmission supplied by Allison. All models can be ordered with the Trailing Equipment Package, which includes a hitch platform, wiring harness and integrated trailer brake controller.
To fit its many work roles, the HD 3500 comes in three cab styles: regular (three-person bench seat), extended (adds a rear bench for six-person seating) and crew (seating for six with four doors). Crew cab models carry a standard 78.8-inch rear box, while the others get an extended 97.8-inch box. The HD also comes with no box at all, making it the ideal platform for RVs and commercial vehicles. Dual rear wheels are available across the board.
The base WT (Work Truck) is all-business, right down its black rubberized floor covering and painted steel wheels. You do, however, get air conditioning and a stereo, and carpeting is available. The LT is more consumer-oriented with premium cloth seats, power windows and locks, MP3 and CD, and most other conveniences found in passenger cars. The line-topping LTZ—not available with the regular cab—adds front leather bucket seats with power adjustments, Bose speakers, aluminum interior trim and other luxuries. Fully equipped, the LTZ's interior rivals those of luxury SUVs.