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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.

2023 GM full-size SUVs get Super Cruise expansion pack first

In August, GM announced it had doubled the size of the network of roads available to its Super Cruise hands-free driving feature. Joining the options list in 2017, Super Cruise had been limited to divided interstate highways in the U.S. and Canada. The expansion opened 200,000 miles of additional divided interstate highway as well as major, undivided highways. Both coasts benefit, but there will be a lot more relaxing motoring on the East Coast especially. North of the border, six of the 10 Canadian provinces add enabled roads. Problem is, no GM vehicles have been able to take advantage of the boon. That changes this month, the automaker saying four of its full-size SUVs in specific trims are first in line to make use of the expansion. The SUVs are: 2023 Chevrolet Tahoe Premier and High Country 2023 Chevrolet Suburban Premier and High Country 2023 Cadillac Escalade, Escalade ESV, and Escalade-V 2023 GMC Yukon Denali Ultimate  The vehicles need to have been built on or after October 3, 2022, a production timeline GM says should put the first examples in customer hands this month. The least expensive way to get into Super Cruise is with the two-wheel drive, $77,625 Chevrolet Tahoe Premier with the 3.0-liter inline-six Duramax diesel and the Advanced Technology Package. Vehicles that use the GM's Vehicle Intelligence Platform electrical architecture and already have Super Cruise will receive an over-the-air update "in the coming months" to access the new roads, at no cost to owners. Since other products like the Cadillac CT4 and CT5, Chevrolet Silverado, and GMC Sierra work with the VIP platform as well, they probably aren't far away from the extra capability and they'll bring a lower financial bar to entry.  Related video:

GM sees 'strong year' in 2018, then gold in Chevy Silverado for 2019

DETROIT — General Motors said on Tuesday it expects earnings in 2018 to be largely flat compared with 2017, but that profits should pick up pace in 2019 as its revamped line of high-margin pickup trucks hits the U.S. market. The 2018 earnings outlook was above market expectations, sending GM shares up more than 3 percent in premarket trading. "GM had a very good 2017 as we continued to transform our company to be more focused, resilient and profitable," GM Chief Executive Mary Barra said in a statement. "We are positioned for another strong year in 2018 and an even better one in 2019." GM and its Detroit rivals, Ford and Fiat Chrysler Automobiles, are bringing on new trucks at a time when overall U.S. new vehicle sales have been falling, but truck sales continue to grow as consumers abandon passenger cars in favor of pickups, SUVs and crossovers. GM on Saturday fired a new round in the battle for profits from one of the U.S. auto industry's most lucrative segments when it showed a new generation of its Chevrolet Silverado pickup truck at the Detroit auto show. The new Silverado, a highlight of the event, is the successor to GM's best-selling vehicle in North America. Sales of the current Silverado rose nearly 2 percent to 585,000 vehicles in 2017. In the coming months, the company will also reveal a revamped GMC Sierra pickup truck. U.S. new vehicle sales fell 2 percent in 2017 after hitting a record high in 2016, and are expected to drop further in 2018 as interest rates rise and more late-model used cars return to dealer lots to compete with new ones. GM said on Tuesday that while it retools a factory in Ft. Wayne, Indiana, to make the new pickup trucks, it will shift some production to an Oshawa, Ontario, plant in order to avoid missing sales in a hot market for the vehicles. The No. 1 U.S. automaker said it will record a $7 billion non-cash charge for its fourth-quarter 2017 earnings related to deferred tax assets. GM said it expects capital expenditure in 2018 of around $8.5 billion, about $1 billion of which will go toward funding self-driving car technology. Last week, the company said it is seeking U.S. government approval for a fully autonomous car — one without a steering wheel, brake pedal or accelerator pedal — to enter the automaker's first commercial ride-sharing fleet in 2019. GM said it expects 2017 earnings per share at the high end of its previously forecast range of $6 to $6.50.