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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.

GM delays truck plant shift so workers can watch Detroit Lions NFC Championship game

It would be difficult to overstate just how big of a deal it is for the city of Detroit and its residents (and residents of southeast Michigan in general) that the Detroit Lions not only made it convincingly into the NFL playoffs but found significant success in defeating the Los Angeles Rams in the Wildcard round and then the Tampa Bay Buccaneers the following week. But if there's one thing we can point to as an automotive-minded group, it's this: General Motors has delayed the start of the third shift at its Flint Assembly plant so that workers won't have to miss any part of the game. To emphasize the magnitude of this decision, it's important to note that the Chevrolet Silverado HD and GMC Sierra HD are built at the plant, and the popularity and, perhaps more importantly, profitability of those heavy duty trucks is so high that it's the only GM plant in Michigan that runs a third shift, as pointed out by the Detroit Free Press. The delay is roughly an hour in total, and workers won't be paid for that missing time. We doubt there will be any complaints. Granted, this isn't the first time GM has delayed starting a late shift due to a big sporting event. In prior years, delays have been recorded for some Super Bowls and for the in-state Michigan vs. Michigan State rivalry game at GM facilities in Lansing, Michigan. Still, GM's statement on why it would hold off production of such a lucrative pair of vehicles explains it better than we can: "We recognize the Detroit Lions playing in the NFC Championship game as a rare, unique opportunity that warrants this temporary schedule adjustment to allow employees to enjoy the game and make it to work on time." It's not GM's only show of Lions pride. Take a close look at the General Motors logo currently being displayed at the Renaissance Center, GM's headquarters in Detroit. General Motors is displaying its Motor City pride with a subtle logo redesign to honor the Detroit Lions as they continues their Super Bowl hunt. Read more: https://t.co/Jmc6bmMK6n pic.twitter.com/9bJJqOmwxB — Ad Age (@adage) January 23, 2024 The Free Press reached out to Ford and Stellantis to see if either of GM's rivals would be making shift adjustments as well. Ford has yet to provide a comment, but Stellantis, makers of the Ram truck and Jeep SUVs, has confirmed it will be running normal schedules at all of its facilities. For now, there's only one more question that needs answering: What if the game goes to overtime?

Camaro SS facelift and dune-riding the new Mercedes-Benz GLS | Autoblog Podcast #579

In this week's Autoblog Podcast, Editor-in-Chief Greg Migliore is joined by Road Test Editor Reese Counts and Associate Editor Joel Stocksdale. First, they talk about the newly refreshed Chevy Camaro SS. Then they dish on the cars they've been driving, including the Lexus UX, Lexus GS F and Volvo V90, as well as riding in the new Mercedes-Benz GLS. After that, they ask the question, how many AMG cars is too many? Finally they turn to car buying, and suggest potential vehicles for a shopper on Reddit for the "Spend My Money" segment. Autoblog Podcast #579 Get The Podcast iTunes – Subscribe to the Autoblog Podcast in iTunes RSS – Add the Autoblog Podcast feed to your RSS aggregator MP3 – Download the MP3 directly Rundown 2020 Camaro SS facelift Cars we're driving: 2019 Lexus UX 2019 Lexus GS F 2019 Volvo V90 Cross Country 2020 Mercedes-Benz GLS ride How many AMGs is too many? Spend My Money Feedback Email – Podcast@Autoblog.com Review the show on iTunes Related Video: