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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.

Cheapest SUVs of 2024

There is no doubt that cost is the number one decision maker when it comes to purchasing a vehicle. As prices continue to climb, affordable choices are getting harder to find, so we dug through what's available to find the least expensive SUVs in the most popular classes.  These prices are current as of January 2024, using available manufacturer suggested retail prices for 2024 models wherever possible. The prices include destination fees, but not dealer markups or incentives. Cheapest small SUV: 2024 Hyundai Venue Not surprisingly, the most affordable SUVs are the smallest. There's a whole host of subcompact SUVs out there, with some of the first introduced being the Nissan Juke, Mini Countryman and Kia Soul. In the beginning, these micro utes were marketed to empty nesters and first-time buyers, but nowadays they represent an alternative to the conventional sedan and have been increasing market share ever since. Profit margins in this class are narrow and popularity is high, which means the entrants are competitively priced. The top choices in the class are only a couple thousand dollars more than the most affordable alternatives below, so it may make sense to consider our favorites that include the Mazda CX-30, Volkswagen Taos and Chevrolet Trax. 2024 Hyundai Venue: $21,135 The Hyundai Venue debuted in 2020 and earned praise for its overall value. You get a ton of features for the money as well as a very generous warranty. Holding it back is its rather weak engine and very tiny proportions. Honorable mentions: 2024 Chevrolet Trax: $21,495 2024 Kia Soul: $21,565 Cheapest midsize SUV: 2024 Chevrolet Equinox Compact SUVs have the broadest appeal thanks to a very diverse group. It seems as though there's a great pick for nearly every taste, whether you're seeking something sporty, rugged or luxurious. They're a great pick for small families with one child and/or a dog. The class is led by vehicles that include the Honda CR-V, Kia Sportage and Mazda CX-50, which are still within reach of most shoppers' budgets. 2024 Chevrolet Equinox: $27,995 The Equinox debuted back in 2005 and this current third-generation was last redesigned in 2018, though a new one is right around the corner for the 2025 model year. While the current 2024 model may be showing its age, it still deserves your consideration for its comfortable ride quality, confident cornering and roomy passenger space.

A conversation with GM's Mark Reuss on MPG, aluminum and Corvettes

There was plenty to talk about when General Motors hosted its annual mid-December holiday media reception a few months ago. GM had just decided to pull its global Chevrolet brand out of major European markets, where Chevys have competed directly with GM Europe Opel and Vauxhall vehicles, and the US government had sold its last remaining shares of GM stock. But most important was the company's just-reshuffled leadership. Post-bankruptcy CEO Dan Akerson had announced that he would step aside and that 52-year-old Mary Barra would replace him on January 15. Not only would she be the first woman to lead a major automaker, she would also be GM's first engineer CEO since Bob Stempel in the early 1990s. "I look at 2013 and 2014, as the retooling of General Motors" - Mark Reuss Replacing her as executive VP for global product development (and purchasing and supply chain) would be 49-year-old Mark Reuss, who had served a stellar four years as North American president, and elevated to corporate president (from executive VP and CFO) would be 42-year-old Dan Amman. All three are relatively young auto enthusiasts who are liked and respected inside and outside the company, and their collective talents and experience are highly complementary. I've interviewed Barra and found her smart, personable and knowledgeable, though she carefully walks the corporate line in speaking and answering questions. I met and chatted with Ammann for the first time at that holiday reception, and he made a good first impression. But I've known Reuss for some time as a genuinely good guy and a highly capable and inspiring leader, and I believe he is exactly the right person for the global product responsibility once famously held by the outspoken, oft-controversial Bob Lutz. So I jumped at an opportunity to join a group interview of Reuss (with mostly business reporters) at the Detroit Auto Show in January. It was an interesting session of mostly good questions, which he answered with refreshing candor and humor. "I look at 2013 and 2014, as the retooling of General Motors," Reuss said. "We've taken down almost every plant in North America, converted and turned it this last year, and to do that with award-winning vehicles and pretty flawless launches is key. We have to keep the train rolling on great product, because the rest won't happen without the best product, period." A reporter asked whether GM was pushing big trucks, SUVs and Corvettes again because gas is cheap. "No," Reuss said.