GMC Sierra 3500HD Review

2008 GMC Sierra 1500 SLE Regular Cab Shown

For the past two decades or so, the Sierra 3500 has been GMC's most capable full-size pickup. Thanks to its stiffened suspension, sturdy frame, powerful engine choices and available dual-rear-wheel axle, the 1-ton Sierra is a go-to choice for those with big towing and hauling needs.

For that same period of time, however, the truck has suffered from lackluster interior design and below-par interior materials. For the GMC Sierra 3500HD, however, interior quality has improved considerably. This is a result of a recent redesign of General Motors' heavy-duty pickup trucks. Mechanically, it's pretty much identical to the Chevy Silverado 3500HD, with differentiation coming mainly through exterior styling and minor interior and feature alterations.

Current GMC Sierra 3500HD

The current GMC Sierra 3500HD, introduced for 2007, is much improved over the past 1-ton Sierra in terms of cabin materials and build quality. Where there was once an abundance of lackluster design, hard plastic and uneven panel gaps there's now richly grained upholstery, softer materials and precise fitments.

The 3500HD is available in regular, extended or crew cab designs. Rear-wheel or four-wheel drive is offered, as is a dual-rear-wheel axle. The extended-cab and crew-cab body styles are offered in four trim levels: Work Truck, SLE1, SLE2 and the top-shelf SLT. The regular cab Sierra can only be had in SLE1 and Work Truck trims.

Standard on all GMC Sierra 3500HD pickups is a 6.0-liter V8 that makes 353 horsepower and 373 pound-feet of torque, paired to a six-speed automatic transmission. The burly Duramax 6.6-liter turbodiesel V8 that puts out 365 hp and 660 lb-ft of torque is optional. Its standard Allison six-speed automatic is well-suited for towing and hauling large loads.

In our experiences with the redesigned 1500, the Sierra is now more competent, refined and easier to drive. Although multi-generational brand loyalty may dictate which heavy-duty pickup you take home, sticking with (or switching to) the Sierra 3500HD should no doubt be a solid decision if you want a full-size, heavy-duty truck.

Past GMC Sierra 3500HD Models

Previous to the current truck, there were two past generations of the 1-ton Sierra. They were still known as 3500 but lacked the "HD" moniker.

SELECT A SPECIFIC GMC SIERRA 3500HD MODEL YEAR*

* Edmunds.com maintains vehicle data as far back as 1990.