Customers checking out the 2021 GMC Yukon AT4 should investigate the AT4 Premium Package, which bundles together a variety of comfort and luxury upgrades.

The 2021 GMC Yukon AT4 Premium Plus Package is tagged with RPO code PEH, and adds a swath of extra gear to the off-road-ready SUV, essentially delivering a loaded vehicle.

Sales success of the GMC Sierra AT4 (inset 2019 model) drove adoption of the off-road capability package across GMC's truck and SUV line.

Since its introduction in 2019, GMC's AT4 off-road package for Sierra pickups, as well as Canyon and all SUVs (in 2021), is the trim which covers that last criteria.

As with the new 2021 Canyon AT4 and 2021 Yukon AT4, the first-ever 2021 Terrain AT4 will feature “a rugged exterior, confident capability and advanced technology,” according to GMC.

When the announcement for the 2021 GMC Canyon AT4 package was made in mid-2020, the bombastic tones of the press release and materials made it sound like a serious off-road package.

GMC's 2021 Canyon AT4 is designed for the off-road enthusiast as well as the action sports and overlanding communities with updated trim and functional features.

GMC announces it will produce an AT4 edition of the Terrain SUV for the 2021 model-year, completing the lineup of AT4 models. Auto123 has the info.

GMC says the 2021 Terrain AT4 will go on sale this fall. We expect to have full pricing information -- as well as further details about the rest of the 2021 Terrain lineup -- closer to that time.