2021 GMC Sierra AT4 First Look, Powertrain Specs, Towing Capacity

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The forthcoming 2021 GMC Sierra AT4 is becoming available later this year. Both regular and HD variants will get this trim level so you can expect plenty of excitement. New Acadia model will also offer this treatment, so General Motors will surely deliver numerous upgrades. Generally, AT4 is replacing the All-Terrain trim level and it will look very attractive.

The list of upgrades is long, and it includes numerous styling refreshments and minor interior changes. As for the performances, nothing will change under the hood. That means the upcoming Sierra AT4 will use a reliable V8 diesel powertrain, just like its predecessor. The most likely rival will be the new Ram 1500 Rebel.

2021 GMC Sierra AT4 front

2021 GMC Sierra AT4 Updates

The all-new 2021 GMC Sierra AT4 will offer a lot of off-road equipment. Generally, this pickup truck is off-road-oriented, so you can even expect a more aggressive look as well. This trim level provides a more commanding stance and it wears numerous blacked-out exterior features. Moreover, the design looks more upright thanks to the latest addition of chrome work. The grille wears subtle chrome accents while the area around the bumpers features more chrome trims.

The surroundings are painted in body color, and this cue looks gorgeous. The grille is black and it truly does look impressive. Moreover, General Motors are offering new red tow hooks and 18-inch wheels wrapped in the all-terrain Micheline tires. Optionally, you can get larger 20-inch wheels. Beneath the skin, Sierra AT4 will get a new off-road suspension, Eaton rear-locking differential, and Rancho shocks.

2021 GMC Sierra AT4 interior

Interior Is Filed With Latest Techs

Even the interior will get a couple of interesting upgrades. The 2021 GMC Sierra AT4 comes with a more upright look and more standard equipment. On top of that, you can count on new interior features such as Traction Select System. Moreover, Sierra AT4 will get hill descent control and hill start assist system. These features will surely improve the pickup’s off-road ability.

A 15-inch head-up display looks quite impressive and it offers a much better user experience than the previous unit. Finally, GM will offer a new Surround Vision system with 15 cameras. You can also expect a higher level of comfort so AT4 is surely more upscale than the previous All-Terrain trim level.

2021 GMC Sierra AT4 Powertrain

The upcoming 2021 GMC Sierra AT4 will use the current 5.3-liter engine. This diesel powertrain generates up to 277 hp and 460 lb-ft of torque. After the latest tuning, this pickup will get an additional 37 lb-ft of twisting power so new AT4 will tow around 21,300 pounds. Moreover, its payload capacity is rated at 4,400 pounds.

Unlike the Silverado, Sierra AT4 will surely deliver better ride quality and better handling. Still, Ram Rebel TRX is the only direct competitor because it also rides on a famous Hellcat engine. AT4 also a standard four-wheel-drive setup and diesel engine deliver 22 mpg combined. According to the latest reports, this pickup will use a 10-speed automatic transmission.

2021 GMC Sierra AT4 side

Price and Release Date

The All-Terrain trim level is gone, and a new 2021 GMC Sierra AT4 is available. The price should start at around $55,500. Moreover, General Motors will deliver AT4 treatment on some other vehicles in the lineup and Acadia is just one of them. We can expect the new model to arrive in the second half of 2020. Most likely, 2021 Sierra AT4 will arrive this fall.

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