2017 Gmc Acadia Limited on 2040-cars

Auto blog

2024 GMC Hummer EV SUV Second Drive Review: Moab made easy

MOAB, Utah — The title of our First Drive of the 2024 GMC Hummer EV SUV included the phrase, "It's big, but this elephant can dance." The truck earned that compliment after a day of squeezing through San Francisco lanes and the slightly-more-commodious back roads in Napa Valley. But an SUV can't be called a supertruck without equivalent mastery on dirt, so GMC led a posse of media to Moab, Utah to run the Hummer's favorite stomping grounds. What happens when you subtract 20 inches of overall length and nine inches of wheelbase from a megafauna pickup? You find the dancing doesn't stop where the pavement ends. Allowed to roam Moab's challenging terrain — and ample room — the SUV is more than ready to do the Hokey Pokey and turn itself around. Admittedly, we knew this from our First Drive of the Hummer SUT two years ago, also performed among Moab's red rocks and red dust. The two variants share the same tricks, and GMC engineers chose Moab for prototype development, so there was no question of successfully navigating the trails. The SUV's simply nimbler about than the SUT. Clearance angles are better all over. Compared to the SUT, the SUV's 49.6-degree approach angle is just 0.1 better, but the 49-degree departure angle is 10.6 degrees better, and the breakover angle is 2.2 degrees better. Having four-wheel steer to rotate the SUV's shorter wheelbase shrinks the already tiny turning circle by 1.7 feet, to 35.4 feet. That's only four feet wider than a BMW i3, but 14 feet more compact than a GMC Sierra Crew Cab with the Short Box. And there are 'only' 15 standard cameras on the SUV, one shy of the 16 cameras in the SUT; the pickup adds an angle on the cargo bed the SUV doesn't have. Our 3X trim packed three motors producing a combined 830 horsepower and 1,200 pound-feet of torque. The $9,995 Extreme Off-Road Package threw on rock sliders with integrated steps that can support 1.5 times the Hummer's weight, full underbody skid plating, two additional underbody cameras front and rear, an electronically locking mechanical front differential for the single motor on the front, a virtual rear differential (programming that makes the two rear motors behave like a locked diff), heavy-duty ball spline half shafts, tow hooks and 18-inch black wheels on 35-inch Goodyear Wrangler Mud-Terrain tires.

GM considering new powertrain options for large SUVs

Aside from the new General Motors offerings, there's not a whole lot of action going on in the fullsize SUV segment. That doesn't seem to be stopping GM from pushing the envelope in the market as Automotive News is reporting that the automaker is looking to introduce some new powertrain options into the Chevy Tahoe (and Suburban), GMC Yukon (and Yukon XL) and the Cadillac Escalade - all have been redesigned for the 2015 model year.
Now, we already know that GM and Ford are collaborating on nine- and ten-speed transmissions for a broad range of applications (including the big SUVs), but this new report says that GM is also considering other options as a way to one-up the competition and, of course, to optimize fuel economy. AN quotes Jeff Luke, executive chief engineer for GM trucks, as saying that "interesting powertrain technologies" are coming including a return of a hybrid SUV and possibly even a diesel engine. Although it sounds like the latter could come down to how customers respond to the 2014 Jeep Grand Cherokee EcoDiesel.

GMC Sierra Denali CarbonPro bed is finally, almost here

GMC revealed the Sierra 1500 with the optional CarbonPro bed on March 1, 2018. The bed wasn't available at launch, though. You can't buy it now, either, but it will hit dealerships with limited availability after production starts in early June, exclusively for the Denali 1500 and AT4 1500 trims. The carbon floor and sides replace the steel panels in a normal bed, providing "strength, durability, and scratch resistance" and a potential 59-pound weight saving, depending on the truck's configuration. To make sure the bed had a chance, development engineers replicated "extreme use scenarios" like dropping 1,800-pound gravel loads, 450-pound steel drums, and cinder blocks from various heights. They put a 250-pound man on a snowmobile with studded tracks, had him drive into the bed and then go wide-open throttle. We're told the result was "minimal scratching." On top of the extreme weather testing any vehicle goes through, the team also put a generator in the bed and aim the exhaust into a corner to ensure vibration and direct heat wouldn't deform the carbon fiber. Because of the finer shaping area-specific strength possible with carbon fiber, the bed provides one cubic foot of additional payload space by having its sidewalls pushed further out. The CarbonPro bed doesn't need a bedliner, and is grained at the top for better traction but smooth on the bottom for easier hosing down and dirt removal. Tie-downs at the front of the bed work with molded indentations to hold motorcycle tires, and slots in the sidewalls hold two-by-sixes. The truck maker says the carbon-lined payload area confers "best-in-class dent, scratch and corrosion resistance," but we suppose the nation's pickup truck army will prove that or not. The trucks likely won't have the hardest life at the start, since the Sierra Denali costs $56,790 before even a basic option like four-wheel drive. The real test probably won't come until around 2029, when third owners begin treating their aerospace-inspired thoroughbreds like dray horses.