The new, 2007 Chevy Silverado HD completes the phase-in of Chevrolet's redesigned full-size truck line, with new frame, engines, transmissions, interiors, and sheetmetal that requires no badge to tell it apart from a GMC.

Silverado HD pickups are about real work and serious play. The 2500-series is often used like a second car and charged with pulling the boat or trailer on weekends, while the 3500 usually sees hauling and pulling duty on a routine basis and tows the fifth-wheel RVs and six-horse trailers. With a trailer of 5,000 pounds or less, or infrequent carriage of building materials, you'd be better served with a Silverado 1500.

But for those who need it, the Silverado HD models are the only heavy-duty pickups with independent front suspensions on four-wheel-drive units, for better ride and steering than the competition. And in the power department, the 6-liter gas V8 is the strongest standard engine, and the 6.6-liter is the most powerful turbodiesel. The standard six-speed automatic one-ups the others' and only GM includes OnStar. It is well finished, inside and out.

The Silverado HD offers a choice of interiors, with different dashboards rather than merely varied finishes. You can have it sweep-out simple, or served up with heated leather, navigation, and an expensive-looking opaque shade for the moonroof. Regular cabs are roomy enough for three crew-mates, extended cabs are ideal for younger families and have a thoughtful new rear door design, and the crew cab is suitable for four or five big athletes or pony-sized dogs.

Whether referring to interior appearance or driving feel, the Silverado HD is the most car-like of big pickups, yet it carries and tows as well as other 250/2500 or 350/3500-series trucks. With close to 100 derivatives in cab/box/trim/drive choices and option sheets to fill a page, determining the right one requires due diligence and patience. There should be an example to fit your tastes and requirements.