Patrolling the Whistler Blackcomb ski resort in British Columbia requires more than a typical rescue vehicle. Luckily, there's nothing about the GMC Sierra All Mountain truck that's typical. Standard tires aren't going to be much help on the ski destination's treacherous peaks, especially atop the Flute Bowl, where there isn't access via ski lift. So instead of tires, GMC technicians installed 175 Series Mattracks, which are long and wide enough to displace the weight of the vehicle to as little as 1.5 pounds per square inch -- less than the pressure exerted by an average six-foot male -- which allows the truck to ride atop the snow. No small feat, especially considering that the vehicle weighs in at 10,667 lbs, versus the 8,600 lbs of a standard GMC Sierra.
Alongside the Mattracks, technicians added a 12" lift kit, front snow lights, wet sound speakers, and extra LED lights under the rear bumper and wheel wells. In terms of performance, the 4-wheel drive system is supplemented with an Eaton automatic rear locking differential, which kicks in while undergoing low-traction conditions. There's also a Z71 Off-Road Suspension Package, including off-road tuned monotube Rancho dampers and an underbody transfer case shield. Meanwhile, the anti-lock brake system delivers a controlled descent down steep grades.
For detailed photos and the All Mountain in motion, take a look below.