Video Summary
Here is the summary of the Youtube video:The truck reviewed is the new 2026 GMC Sierra EV AT4 off-road truck. It has 725 horsepower with massive driving range. The truck has a unique terrain mode for off-roading.
The reviewer enjoys testing enhanced Super Cruise on the highway. He likes the new off-road drive mode and the terrain drive mode, which helps off-road.
The AT4 is the first adaptation of the AT4 off-road trim on an electric truck. The AT4 Sierra EV has a higher ride height than other Sierra models, and doesn’t have air suspension.
The off-roader has unique tires, GoodYear Wrangler Territory AT's. They are 35 inches tall, mud and snow-capable, and EV-specific. It is mounted on 18-inch wheels with an eight-lug hub.
The approach angle in the front with the cut-out spoiler is just over 32 degrees. The departure angle in the rear is 25 degrees and the rear hitch is tucked away nicely. The breakover angle is just over 19 degrees.
The bed has multiple ways of opening it with a key fob, button on the tailgate and a button inside. The AT4 comes with a bed-lined bed. Export power is 7.2 kW and combined is 10.2 kW.
For highway driving with super cruise mode, it helps with lane centering, and other adaptive cruise control features. The truck's regenerative one-pedal driving slows the car down and engages friction brakes quickly. It got a 2.5 miles per kilowatt hours.
It is noted that to use a 4 wheel steering crab walk the GMC Hummer EV introduced the ability to crab walk first, The lack of locking differential is another point.
The review indicates you can buy two versions of the AT4 Sierra EV. The extended range with a smaller battery will have up to 12300 pounds of towing capacity, 1950 pounds of payload and Super Cruise feature is good for what the brand is trying to do. The vehicle can coast at the touch of a button. There's only road noise as well.
This truck’s performance is competitive within the 80,000 to 91,000 dollar range. Super Cruise is the best self-driving system in the industry. It is really good, the reviewer concludes. A minor complaint is expansion joints and a lack of spare tire on the off roader.
