GMC Sierra 1500 AT4 All Mountain Concept

At the Calgary Stampede Parade in Canada, GMC decided to revisit the All Mountain Concept with the help of the Sierra 1500 AT4. As you can tell from the featured photo, the Mattracks tank treads, special livery, and #GMCALLMOUNTAIN hashtag in the windshield are the highlights.
Starting off with the 4WD Crew Cab, the one-off pickup truck also features the Fabtech K1134DL lift kit which adds no fewer than eight inches to the ride height. The full-size workhorse further benefits from a Kicker Audio boombox, an upgrade that fits rather well with the outgoing character of the so-called concept.Custom LED lighting rounds off the list of improvements, complementing the bone-stock headlights and taillights. The truck is specified with the L87 small-block V8, a 6.2-liter engine which cranks out 420 horsepower and 460 pound-feet of torque to all four wheels… ahem, tracks. The transmission comes in the guise of the Hydra-Matic 10L80 co-developed by GM and the Ford Motor Company.

For the 2019 model year, the light-duty Sierra starts at $31,195 excluding destination charge for the regular cab with the long box, rear-wheel drive, and the 4.3-liter EcoTec V6. Even though 2020 is right around the corner and GMC is a premium-oriented brand, you’re treated to a six-speed automatic transmission which can trace its roots back to the year 2005. The 6Lxx series is based on the ZF 6HP, which was introduced in 2000 with the E65 BMW 7 Series sedan.

A crew cab with the standard box, four-wheel drive, big engine, and with the AT4 package is $62,390 excluding delivery, a lot of money for a pickup which fails to impress as far as the interior is concerned. The iffy plastic trim and button-laden dashboard are subpar in comparison to the Ford F-150 and Ram 1500.

More or less an off-road package, the Sierra 1500 AT4 adds 18-inch machined aluminum wheels to the configuration and Goodyear Wrangler DuraTrac tires. A cat-back performance exhaust system, upgraded air intake, and a few visual improvements complement the factory-installed lift kit, two-speed transfer case, Rancho monotube shock absorbers, and many more bells and whistles.



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