In an attempt to further expand and harmonize the GMC brand, the 2015 Sierra Heavy Duty will now get the All Terrain HD trim package option that the Sierra 1500 has offered for several years. All Terrain will be offered in both 2500 and 3500 HD configurations (single-rear-wheel only) on top of either the SLE or SLT trims; it will require the vehicle be ordered in four-wheel drive with the Z71 suspension. Consumers will have a choice of the 6.0-liter gas V-8 or the 6.6-liter Duramax turbo-diesel V-8.
Some might remember the GMC All Terrain HD Concept we saw almost four years ago. GM engineers built a heavy-duty off-road vehicle on an HD frame and chassis, used a Duramax engine and added creative storage details in the bed. We liked the concept when it was introduced, but this new trim package is little more than a slightly more sophisticated off-road package for the HD pickups. No doubt GMC is hoping that the All Terrain HD name gets as much ordering traction with customers as the Denali brand has. GMC says that at certain times of the year as many as 20 percent of the HD trucks ordered request the high-zoot Denali trim package.
Although pricing has not been announced yet, the new All Terrain HD trim option will be available later this fall on 2015 models; pricing is still a few months away. The package will offer a unique chrome grille surround, exterior graphics, additional underbody skid plating, unique six-spoke aluminum wheels, new chrome towing mirrors, unique bumpers, standard rearview camera and a host of interior accents, labels and details.
As you might expect with a premium package, the All Terrain will include GMC's latest OnStar 4G LTE technology, which will also include a built-in, fully functioning Wi-Fi hotspot any time the truck is running. The hotspot is free for the first three months after purchase and is available by subscription after that.