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2023 GMC Sierra AT4X could swipe a few parts from the AT4X AEV

GM recently expanded its collaboration with American Expedition Vehicles beyond the Bison herd with the 2023 GMC Sierra AT4X AEV. This Jimmy takes matters further than the standard AT4X by increasing ground clearance, approach and departure angle, and breakover angle, improvements made possible by new stamped steel bumpers and a set of 33-inch mud-terrain tires wrapping 18-inch AEV Salta wheels. GM Authority says the AT4X AEV won't be the only Sierra to get special parts, crediting sources for the news that the standard 2023 Sierra AT4X will get some of the equipment from the special trim. According to the report, at some point for the coming model year, the off-road-focused Sierra will bolt on the AEV's stamped steel front and rear bumpers, stamped steel front skid plate, and 33-inch Goodyear mud terrains. If this is true, it's an intriguing move; the equipment list is nearly everything found on the proper AEV model. Going by that list, the only bits left off would be four additional skid plates, wheels, gloss black door handles, gloss black tailgate accent, and AEV logos. Judging from the GMC retail website, the grille that debuted on the AT4X AEV will also be on the standard AT4X.  GMC hasn't announced pricing for the 2023 range yet. The pickup will be carryover, but we would expect various well-known issues to increase the $78,300 price of the regular AT4X over the 2022 model. GMA believes "it's reasonable to assume" that a standard 2023 Sierra AT4X with some AEV parts would go up even more, whenever it hits the market — and this is on top of the Sierra's $1,500 price increase from making OnStar standard equipment. And after that, of course, the proper AT4X AEV would be more again.

2020 GMC Sierra HD offers loads of tech

The 2020 GMC Sierra HD has finally been revealed, and it's a heck of a lot more subtle than the Silverado HD. Whereas the Chevy went with a wildly exaggerated version of the split grille and headlights the truck is known for, the Sierra simply builds on the 1500 model's design with an expanded grille that doesn't appear to be as tall or wide as the Chevy's. That's not to say it looks unimpressive, though. It's still got a massive fascia, it's just not as extreme as the one with a bowtie on it. With the Sierra's unveiling, we get more details about the powertrains available on the heavy duty GM trucks. The 6.6-liter turbocharged Duramax V8 makes 445 horsepower and 910 pound-feet of torque. That's the exact same output as the engine in the old models. But this time, the engine will be mated to an Allison-branded heavy duty version of the GM 10-speed transmission. A gas engine will also be available, but GMC hasn't revealed details on it yet. The new Sierra boasts a range of new features, some that are unique to it, and some shared with the Silverado. A shared feature is the new steps in the bed sides that are standard on all Sierra HD models. Unique to the brand is the MultiPro tailgate with fancy drop-out step. This tailgate will be available on all trims, and it's standard starting with the mid-level SLT. There are some useful visibility features being shown on the new Sierra, too, such as an available trailer camera system with 15 possible viewpoints, and it can virtually show the rear view on the screen as if there wasn't a trailer in the way. GM's rear-view mirror screen also makes an appearance. An AT4 off-road trim will be available on the new Sierra HD. It has slightly different styling with dark grilles and trim. Off-road upgrades include reworked springs and shocks, skid plates, standard all-terrain tires and a locking rear differential. Pricing has not yet been announced, but the truck goes on sale this summer. Details on prices as well as further specifications will likely be announced near the on-sale date. Related Video: This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings.

Junkyard Gem: 1973 GMC Sierra Grande Camper Special

Starting in the 1973 model year, General Motors introduced the "Rounded Line" family of C/K-series Chevrolet and GMC trucks, and sales of the pickup versions continued all the way through 1987. Nice examples of these trucks can sell for large money, but the junkyard teaches us that not all collectible vehicles are worth rescuing and fixing up. Here's a reinforcement of that lesson, courtesy of a first-year GMC C2500 Camper Special with the high-zoot Sierra Grande trim level, found in a self-service yard just outside of Denver, Colorado. I'm no GM truck expert, but I know enough to stay clear of the battles over what to call this pickup. Let's just say it's a three-quarter-ton, rear-wheel-drive third-gen C-Series with really cool badges. Yes, I bought this badge for my garage wall, and it was totally worth the $4.23. GM came up with the Camper Special package during the late 1960s, when removable pickup campers became popular, and for 1973 it included heavy-duty springs and a wiring harness made to plug into the connectors on slide-in truck campers. It also included woodsy-looking badges, but someone pried the ones off this truck before I could buy them. This may well have been a one-owner truck, because it still had original warranty paperwork inside. Here we see that it was purchased new on August 2, 1973 (which happens to be the day that George Brett got his very first hit in the big leagues) by a resident of Compton, California. Yes, that Compton. The build tag tells us that this Camper Special was born at the Fremont Assembly plant in California, which became the GM-Toyota NUMMI venture in 1984 and is now the Tesla Factory. I think most 1973 C/K pickups sold new in Colorado would have come from Pontiac Assembly in Michigan. There was a time, not many years ago, when a genuine 454-cubic-inch (that's 7.4 liters to those of you sweating under the oppressive weight of the French Empire's Measurement System) big-block Chevrolet engine would have been yanked out and purchased within hours of hitting the rows of a yard like this. These days, engine-swappers can get more power with less weight from any number of donor vehicles. If this engine is the original 454, it was rated at 240 horsepower and 355 pound-feet (down from 270 hp in 1972 due to emissions-related changes). This truck had a three-speed automatic transmission, like most optioned-up Detroit pickups of its era.