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GM exploring ways to raise half-ton Duramax diesel tow rating

Lots of truck owners cheered when GM announced fuel economy numbers for the 2020 Chevrolet Silverado with the 3.0-liter Duramax diesel inline-six. Even after Ram let loose its EPA mileage ratings for the 2020 Ram 1500 EcoDiesel, the Chevy oil-burner still took the trophy. The victory was years in the making, GM engineers spending an entire four-year development cycle refining the LM2 Duramax to increase mileage. The tradeoff, as well all know by now, is towing; the Duramax in half-ton duty pulls a maximum 9,300 pounds in the Silverado. Rivals across town can do more, the Ford F-150 PowerStroke rated at 11,500, the Ram 1500 EcoDiesel game to pull 12,560. GM engineer John Barta told Muscle Cars & Trucks that more hauling chops could be on the way, explaining, "We’re actually looking at upgrading some of the materials around (the engine bay) to see if we can maybe raise our tow rating." Engine bay materials are at issue due to thermal complexities underhood. John Barta, GM's assistant chief engineer of diesel engine controls, said the Duramax's inline-six configuration allowed engineers to get emissions hardware like the combined selective catalytic reduction, diesel oxidation catalysts, and diesel particulate filter unit closer to the engine, where it heats up quicker, getting emissions down quicker. But that filter puts another heat source in those confines, enforcing a cap on the tow rating to keep the engine and other systems from overheating. "If you look under the hood," he said, "youÂ’ll see a significant amount of silver ‘moon tapeÂ’ around to make sure things arenÂ’t getting overheatedÂ… if we were to go up in higher towing, which we can, we start impacting the possibility of deteriorating some of the components.” There isn't much space for more grille, so swapping for a better grade of "moon tape" or a different kind of material could reduce engine bay heat, extracting a higher tow rating in the process.  It's important to note a point Barta's been making for months about the Duramax figures, though. "Even though itÂ’s nice to brag about big numbers, in reality, light duty customers are not towing that large with their trucks," and, "We do know that (95 percent) of our light duty customers donÂ’t tow over 9,000 pounds." On our First Drive of the 2020 Silverado diesel we called out the tow rating, but emphasized that the Chevy and GMC have more important challenges to overcome.

Base GMC Hummer EV2 reportedly dead for the planned 2025 launch year

Remember October 2021? That's when GMC divulged trims and pricing for the Hummer EV pickup range. It started with the Edition 1, asking around $110,000 before it sold out. Then would come the EV3X in fall 2022 for $99,995, followed by the  EV2X in the spring of 2023, asking $89,995. And for this year, shoppers were meant to get the option of a 'bargain' entry, the EV2-without-the-X that kept the dual motors but swapped for a less zippy 400-volt electric architecture and a smaller battery pack able to power a 250-mile estimated range. At the time, we were told the EV2 would open the MSRP bidding at $79,995. Spring is officially here, the EV2 isn't, and GM Authority cites unnamed sources when writing "there will be no 2 model for the 2025 model year" outside the 2X. Normally, automakers kill the low-hanging fruit after putting it on sale; the Hummer EV has, again, upended expectations. Therefore, your 2024 GMC Hummer EV pickup lineup after the $2,295 destination charge costs: EV2X Pickup: $98,845  EV3X Pickup: $106,945 EV3X Omega Edition Pickup: $150,295 On the SUV side, the MSRPs are almost carbon copies:   EV2X SUV: $98,845  EV3X SUV: $106,945 EV3X Omega Edition SUV: $130,300 For both body styles, keep in mind that Interstellar White is the only freebie exterior hue. Void black adds $495 to the price, five other colors cost $625, Afterburner Tintcoat orange runs $1,225.  The limited-edition Omega variant builds on the 3X trim with exclusive Neptune Blue Matte paint, the $9,995 Extreme Off-Road Package, exclusive 18-inch wheels, unique interior carpeting, a transparent roof and the MultiPro tailgate with a Kicker audio system on the pickup. Both trucks also get 35-inch mud-terrain tires, underbody skid plates and additional off-road camera views. The price disparity is partly because the Omega Edition pickup is packs a 24-module battery, the SUV gets a 20-module battery. This trim is only available to existing order holders. Speaking of which, the otherworldly EV is still going to be a few years' wait for some, but more reservation holders are already enjoying deliveries this year as GM continues to open the factory taps. GMC sold two examples of the Hummer EV in the first quarter of last year, around the time it has 65,000 potential buyers on the reservation list, and 3,260 units for all of 2023. In the first three months of this year, GMC sold 1,668 trucks.  Related video:

2023 Detroit Auto Show Mega Photo Gallery: All the new reveals and first looks

The 2023 Detroit Auto Show didn’t play host to a lot of reveals, but on top of the new cars that were revealed there, automakers brought a whole bunch of cars we havenÂ’t seen in person yet. In a show of home strength, all the big reveals came from the hometown Big Three, with Ford, GM and Stellantis playing host to the most important unveilings. We took Huntington Place by storm to capture all of the new cars and sights to see in Detroit, and you can see everything we did in the series of galleries below. Interesting special editions like the 2024 Ford F-150 Lightning Platinum Black Edition and the 2024 Chevrolet Camaro CollectorÂ’s Edition found some floor space alongside bigger debuts like the refreshed gasoline-powered F-150 and 2024 Jeep Gladiator with its new interior. If you wanted to see it all yourself, make sure you check out our guide on how to attend the public show days. Scroll on down to see all of the galleries for all of the big Detroit debuts.   2024 Ford F-150 2024 Ford F-150 Tremor View 22 Photos   2024 GMC Acadia 2024 GMC Acadia AT4 View 17 Photos   2025 Cadillac CT5 2025 Cadillac CT5 View 15 Photos   2024 Jeep Gladiator 2024 Jeep Gladiator Live View 10 Photos   2025 Ford Mustang GTD Mustang GTD View 9 Photos   2024 Ford Mustang Mach-E Rally 2024 Ford Mustang Mach-E Rally View 10 Photos   Chevrolet Colorado ZR2 AEV Bison Chevrolet Colorado ZR2 AEV Bison View 6 Photos   2024 Ford F-150 Lightning Platinum Black 2024 Ford F-150 Lightning Platinum Black View 11 Photos   2024 Chevrolet Camaro CollectorÂ’s Edition ZL1 1LE 2024 Chevrolet Camaro Collector's Edition ZL1 1LE View 8 Photos   2024 GMC Sierra EV Denali 2024 GMC Sierra EV Denali View 8 Photos   Related video: Design/Style Green Detroit Auto Show Cadillac Chevrolet Ford GM GMC Jeep Technology Truck Coupe Crossover SUV Electric Hybrid Luxury Off-Road Vehicles Performance Sedan