The 2007 Chevrolet Silverado 2500HD LTZ Extended Cab with four-wheel-drive has a four-door cab with maximum seating for six. It is powered by a 6.0-liter Vortec V8 engine that produces 353 horsepower. A 6.6-liter Duramax Diesel V8, which produces 365 horsepower, is optional.

The standard transmission is a six-speed Hydra-Matic automatic, which has a Tow/Haul mode and a Tap Up/Tap Down shift control lever attached to the steering column. The shift control enables the driver to manually shift up or down, depending on cargo and driving conditions.

The LTZ is the Silverado's top-level trim package, and offers such standard features as reclining, heated, and 12-way power-adjustable leather-appointed front seats, a six-disc in-dash CD changer with an MP3 input jack, a remote vehicle starter system, a Bose speaker system, a heated windshield wiper fluid system, dual-zone automatic climate control, cruise control, power windows, and a PASSlock theft deterrent system.

Other features include heavy-duty trailering equipment, 17-inch Bright machined-aluminum wheels, daytime running lights, foldaway exterior mirrors, two auxiliary power outlets, and standard OnStar.