The Hummer EV SUV will share key components with the Hummer EV pickup, from its Ultium powertrain platform to the open-air driving experience that comes from its removable Infinity Roof panels. Both the SUV and pickup are being touted as having significant off-roading chops, including the ability to ‘crab walk’ diagonally around trail obstacles thanks to four-wheel steering, and an Extract Mode that utilizes the Hummer’s Adaptive Air Ride suspension to raise the body some 6 inches out of harm’s way.
Because the SUV is shorter than the pickup – overall by about 10 inches and with a wheelbase nearly 9 inches shorter – GMC is promoting it as having ‘best in class off-road proportions.’ Those proportions, combined with its four-wheel-steering capability, do give it a tight turning radius of 35.4 feet, equal to that of the Chevrolet Bolt.
The smaller platform, though, does have a cost: less room for batteries. The Hummer EV SUV’s double-stacked battery pack contains 20 modules, while the Hummer EV pickup has 24. That means, on paper, anyway, the SUV is less powerful. The Edition 1 version of the SUV that will be available at launch is rated at up to 830 horsepower compared to the pickup’s 1,000. Range is shorter, too, at 300 miles compared to the pickup’s 350. Torque remains rated at up to 11,500 lb-ft, a number GM arrived at by multiplying the twisting force through the gear ratios in the Ultium platform’s front and rear drive units.
How Hummer configures that platform will be a key differentiator between Hummer EV SUV models. Edition 1 and 3X models will have three drive units, one to power the front wheels and one each for the rear wheels. The 2X and 2 models will have two drive units, one up front and one at the rear. The 2 will also have 16 instead of 20 battery modules, lower power output, and shorter range, but will be priced accordingly – 79,995 compared to $105,595 for the Edition 1.
Adding the Extreme Off-Road Package to an Edition 1 raises its MSRP by $10,000, for which the Hummer buyer receives 35-inch Goodyear Wrangler Territory tires on 18-inch wheels (22s are standard). Also provided are underbody armor and rock sliders, front and rear lockers, heavy-duty half-shafts, and the UltraVision camera system that provides up to 17 views around the vehicle to see the surrounding terrain, including under the body, in real time.
Those UltraVision images are among the infotainment channels broadcast on a 13.4-inch high-def touchscreen positioned between the driver and passenger. In front of the driver is another 12.3-inch information screen. GMC promises Hummer occupants a ‘multisensory, immersive experience’ with customizable features that can tailor not just the sound through the Bose entertainment system and the feel through the haptic driver’s seat, but also the SUV’s steering, suspension, and acceleration response. The center screen can also be used with an updated version of the myGMC mobile phone app to show satellite-rendered trail maps for navigating off-road. The revised app also tracks real-time energy consumption and can find local charging stations.
On the subject of charging, an optional Power Station generator can be used not just to charge personal devices and power recreational gear, but has the power (240v/25A/6kW) to charge other electric vehicles.
The low-floor, skateboard-like Ultium drivetrain platform has one other advantage: It affords several gear storage options. Folding the SUV’s rear seat flat and opening the powered tailgate reveals nearly 82 cubic feet of cargo space, more than GMC’s Acadia SUV with its second and third row seats folded. There is additional storage space hidden beneath the load floor and more in the Hummer’s front trunk.
GMC expects to launch the Hummer EV SUV in Edition 1 form in early 2023. It will be followed by 3X and 2X models in the spring of ’23, and the base 2 model in spring ’24.