Video: I Had My Doubts About The All-New 2022 GMC Sierra AT4X Overland Truck But It Proved Me Wrong!

Here's how this truck handles itself in the Rocky Mountains

Images: TFLoffroad

Andre takes a heavily built 2022 GMC Sierra AT4X Overland Truck into the Rocky Mountains – here’s how it performs!

Nick James and Overland Expo Team, helped us get our hands on this special, one-off, 2022 GMC Sierra AT4X Overland truck. This is NOT a factory available vehicle; however, you CAN buy these components aftermarket. If this overlanding setup is to your liking, you could build one too.

Keep in mind: this wasn’t some base-model pickup the build stated with. This is a GMC Sierra AT4X, which means it comes with a powerful 420 horsepower 6.2-liter V8 that makes 460 lbs-feet of torque. It’s bolted to a 10-speed automatic transmission and routed to a sophisticated 4×4 system. That system includes front and rear E-Lockers and a spool-valve suspension system, making this the most off-road capable GMC pickup truck – ever. Sure, the GMC Hummer has some off-road chops, but it’s in a totally different category.

For the most part, there haven’t been any performance enhancements. Despite the added weight of the armor, rack accessories and all the goodies in the bed, the power remains untouched. Not only that, they opted to keep the quad exhaust pipes jutting out of the rear, which is a “no-no” for serious off-road enthusiasts.

Ah, the whole off-road enthusiasts vs. overlanding enthusiasts build, eh?

As Andre bounced and flexed the 2022 GMC Sierra AT4X Overland truck in the boonies, one thing became clear: it’s NOT a boulder basher. Sure, it’s got beefier tires, and armor, but there is no suspension lift. In fact, they had to add airbags in the rear to handle the extra weight. Something this heavy isn’t meant for boulder bashing.

We found it odd that they opted to build this rig using a 1500 platform in the first place. It looks like a heavy-duty platform, paired with a diesel would make more sense. Still, it would weigh a lot more, and could be even more expensive. As it is: the setup on this trail rig makes its mass noticeable, but not too detrimental.

The best part of this build is the proof of concept. This truck can take you deep in the bush, comfortably. It also the chops to get you – or someone else – out of trouble. That is what makes it a proper overlander in my book.

Check out Andre’s video!

Easily amused by anything with four wheels, Nathan Adlen reviews vehicles from the cheapest to the most prestigious. Wrecking yards, dealer lots, garages, racetracks, professional automotive testing and automotive journalism - Nathan has experienced a wide range of the automotive spectrum. Brought up in the California car culture and educated in theater, childhood education, film, journalism and history, Nathan now lives with his family in Denver, CO. His words, good humor and video are enjoyed worldwide.