2020 GMC Sierra AT4 : Off-Road in Wyoming

2020 GMC SIERRA AT4 4 560x373

GMC has established its Sierra pick-up trucks as a premium option in the market, mostly due to their popular Denali trim. But even premium customers like to get dirty every once in awhile. So GMC created a new off-road focused trim, designated by AT4 badging. It is designed for customers who want to add factory installed (and thus warranteed) off-road upgrades to their truck, instead of depending on the after-market industry. We recently were invited to Wyoming to drive the new 2020 GMC Sierra AT4 and captured this video of the experience:

So clearly based on that footage, this package must be more than just AT4 badging and vertical red tow hooks. In fact, the content list is fairly extensive, and that quick off-road course was designed to show off the capabilities of the added equipment. Can your old Denali do that? We doubt it. 

2020 GMC SIERRA AT4 7 560x373

The 2020 GMC Sierra AT4 includes:

  • 2-inch factory-installed suspension lift
  • Standard 4WD with a two-speed transfer case, locking rear differential and skid plates
  • Off-road-tuned Rancho monotube shock absorbers
  • 18-inch wheels with all-terrain tires or available mud terrain-rated Goodyear Wrangler Duratrac tire, or available 20-inch wheels with all-terrain tires
  • Exclusive wheel design with machined-face, dark-tinted appearance
  • Hill Descent Control
  • Traction Select System
  • GMC exclusive, industry-first MultiPro Tailgate 
  • Black chrome finish on the fog lamp bezels, fender surround and grille insert
  • Body-color grille surround, door handles and bumper
  • Exclusive athletic interior trim elements
  • Red vertical recovery hooks
  • Standard 5.3L V-8 engine

2020 GMC SIERRA AT4 5 560x373

For most truck customers, those features are going to check off the major boxes for their off-road needs, so it’s definitely a compelling package and it performed well in our limited testing. Off-road packages are a major trend among truck and SUV manufacturers, and AT4 is one of the newest to enter the market. While GMC is well-known for their Denali trims, GMC plans to bring AT4 trims to all of their models by next year. In Wyoming, we also had the opportunity to drive the 2020 GMC Sierra 2500HD AT4 and 2020 GMC Acadia AT4 models, although on much tamer terrain. 

While towing with the Sierra HD, we also got a sneak peak of the model we’re most looking forward to, the 2020 GMC Canyon AT4. Will it be able to compete with the hot mid-size off-road truck segment?

Philip Van der Vossen

Editor at Gunaxin
Philip Van der Vossen is the Editor of Gunaxin, a Men's Lifestyle Magazine that was established in 2008. Philip also created and hosts the Trail Trek Tour, a traveling series of off-road events for automotive media.

Additionally, Philip has served as Rally Director for the Washington Automotive Press Association, Speaker at IMPAcon and Blogs with Balls, Chairman of the Relay For Life of North Anne Arundel County, Examiner Team Leader for the Maryland Performance Excellence Awards, and Credentialed Founder of Capitals Outsider.
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