2021 GMC Sierra 1500 AT4 Off-Road Truck

The 2021 GMC Sierra 1500 AT4 might be the most interesting model in the lineup. Yes, there is the Denali version with the high-end features. But, truckers prefer performance over luxury. The all-terrain package will help them reach outskirts and beat tough ground conditions.

The highlights of this model are the special suspension and performance options. However, the company also installs a unique bed. Furthermore, the 2021 Sierra 1500 AT4 is available with V8 engines and a turbodiesel. It will take you over most obstacles thanks to extra ground clearance. Trailering is also improved with additional systems.

2021 GMC Sierra 1500 AT4 diesel

2021 GMC Sierra 1500 AT4 Features

Let’s check what the AT4 package brings. First of all, there are two inches under the body more than for the standard configuration. That is 10 inches total. The carbon-fiber composite bed will keep the cargo safe even in bumpy terrains. General Motors is a leader here. Fans can also find a six-way tailgate on some trucks. The box for the Sierra AT4 is durable and more resistant to hits and scratches.

DuraTrac tires are specialized for all kind of terrains. Automatic locking differential will take you out from any complicating situation. Hill descent control is added and the Dynamic Fuel Management system will keep the mileage at the best level. Depending on the situation, the engine is going to use 2-8 cylinders, reducing consumption.

2021 GMC Sierra 1500 AT4 Off-Road Truck

Engines and Specifications

There are three engine choices available with the 2021 GMC Sierra 1500 AT4. The entry-level truck is all but ordinary thanks to a 5.3-liter V8 unit. This powerplant delivers 355 hp and 380 lb-ft of torque through a ten-speed automatic transmission. Of course, four-wheel drive is the setup all over the lineup.

If you are looking for more power, then a 6.2-liter drivetrain can offer 420 hp and 460 lb-ft. This amount of power can take you anywhere and the AT4 becomes a serious threat to the Ford F-150 Raptor. The gas mileage is not so bad either, with 17 mpg combined. However, when you take the Sierra AT4 off the road with a lot of cargo in the bed, it will consume more gasoline.

The oil-burner is a 3.0-liter Duramax engine. The turbodiesel is paired with the same transmission. The towing capacity jumps, as well as the torque. Still, the diesel truck cannot offer as much power as its petrol siblings. On the other hand, the 2021 GMC Sierra 1500 AT4 will make it up with an exceptional fuel economy, which ends at 26 mpg on highways.

2021 GMC Sierra 1500 AT4 Off-Road

2021 GMC Sierra 1500 AT4 Price

The 2021 GMC Sierra 1500 AT4 is not equipped with the luxury material, but its cost is near the price of the Denali model. Performance upgrades and special features are the most advanced in the truck market. So, there is no wonder why the package is going to cost you at least $55,000. Larger V8 and diesel engine adds $3,000 and several optional packages are available for upgrade. The truck is entering the dealerships later this season and its main rivals will be Ford Raptor and Toyota Tundra TRD Pro.

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