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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 Canada recalls 159,240 GMC and Chevy trucks for faulty defroster circuit

General Motors is recalling more than 159,000 2014-2019 Chevrolet Silverado and GMC Sierra pickup trucks in Canada due to a potential fire risk. GM says the rear defroster circuit could overheat on trucks optioned with the power-sliding rear window. Thus far, there is no word on the recall's relation to U.S. vehicles. The recall, found by Automotive News, was posted to Transport Canada on June 28, 2019 with manufacturer recall No. N192220470. Included in the 159,240 vehicles are the 2014-2018 Silverado 1500, the 2015-2019 Silverado HD, the 2014-2018 Silverado LD, the 2014-2018 Sierra 1500, the 2015-2019 Sierra HD, and the 2014-2018 Sierra LD. The notice says the rear defroster circuit, specifically on trucks with the power-sliding rear window, could overheat. Because of its placement, this excess heat could cause melting, smoking, or possibly fire, in the worst case scenario. As of now, there is no official word when GM will initiate the recall and there is no official fix detailed just yet. GM suggests that owners, who will be notified by mail if their vehicles are affected, take their trucks to a dealer to remove the rear window defroster fuse as a stop-gap.  Automotive News contacted GM to find out if the problem is also found in trucks sold in the United States, but no definitive statement was made, as the investigation is reportedly ongoing. We will update this space if American vehicles are found to be included in the problem.

Auto Show Notebook: Legendary Continental name inspired Lincoln's designers

What's in a name? A lot for the Continental concept, and it gave Lincoln designers a sense of purpose as they styled the brand's upcoming flagship sedan. "The moment that we told them, it was amazing," Lincoln president Kumar Galhotra said. "They totally got it." "It" is cutting-edge technology wrapped in stately, large-sedan design. It's a nod to Lincoln's storied past, but a signpost for where the brand is heading. Though the Continental name dates to the late 1930s, Lincoln designers avoided making the concept overtly retro. "You can't let it pull yourself back too far in history, but you've got to design a car that lives up to the name," Galhotra said. Speaking to Autoblog on the floor of the New York Auto Show where the Continental formally debuted Wednesday, the Lincoln president reiterated that the car is on track to launch in 2016. It will compete against the Audi A6, Lexus GS, BMW 5 Series and other large luxury sedans. After its debut, the concept in New York will fly to China – another critical market for Lincoln – for display there. It will be replaced in New York by a prototype without an interior. The Continental is the latest high profile play by Lincoln to raise its image with consumers, who have either ignored or forgotten about it amid steep competition in the luxury sector from German and Japanese brands and a potentially resilient Cadillac. Lincoln sales are essentially flat compared with 2014 through the first quarter of this year, with total volume of 21,478 units. The middling start to 2015 comes on the heels of nearly 16-percent sales growth last year spurred by the launch of the MKC and the prominent signing of Matthew McConaughey to star in Lincoln advertisements. Other News, Notes & Quotes Speaking of names, Chevrolet did its homework before deciding to proceed with "Malibu" for its new generation of midsize cars. "We went out and researched it," said Alan Batey, president of General Motors North America. "People actually like the name 'Malibu,'" he said. Admittedly, the current Malibu has struggled in the marketplace against entrenched competitors, Batey said, but he's optimistic its awareness and historical value are assets to the dramatically redesigned sedan."The name's strong," he said. Meanwhile, in other Chevy news, the brand kicked off a new marketing campaign, "Real People, Not Actors" Wednesday. It will show consumers interacting with Chevys and their spontaneous reactions to the vehicles.