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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.

Here's the 2016 Chevy Camaro Convertible

Chevrolet is planning to reveal the 2016 Camaro Convertible on Wednesday, June 24. But here it is ahead of time, thanks to some leaked images found by the folks at Camaro6.com. These photos were apparently posted to Chevy's website and then immediately taken down. But they clearly show the new droptop Camaro from a number of angles, with the top both up and down. Not surprisingly, the Camaro's design hasn't changed for the convertible body style, and it looks pretty good. Have a look at the low-res images in the gallery above. We'll have the full details later this week.

GM adds 1,200 jobs at Detroit-Hamtramck plant

General Motors is making a big move at its Hamtramck, MI, factory, announcing it will add a second shift and hire over 1,200 workers within the next several months. It's expected that by early 2016, the factory will employ over 2,800 workers to build the Chevrolet Volt, Impala, Malibu, Cadillac ELR, and by early next year, the new CT6. According to GM Hamtramck spokesperson Courtney Zemke, 40 of the 1,200 positions are for salaried employees, while the remainder will be hourly positions. As for where these employees will go, positions are being made available across the factory, so GM isn't focusing on any particular area for its new hires. It's a similar story behind the hiring surge itself. GM said in its press release that the "second shift is necessary to meet forecasted market demand," a position Zemke reiterated. It's a matter of demand across the plant's portfolio, rather than any one particular product seriously outstripping supply. Naturally, the United Auto Workers is happy with the move. "The workforce at Detroit-Hamtramck is second to none," UAW Local 22 Shop Chairman Don LaForest said in the attached release. "We appreciate the opportunity to expand our UAW-GM family." Hiring is going on now, with the second shift slated to get underway in early 2016. GM's Detroit-Hamtramck Assembly to Add Second Shift and More Than 1,200 Jobs Plant will nearly double its workforce by early 2016 2015-10-22 DETROIT – General Motors is nearly doubling its workforce at Detroit-Hamtramck Assembly by adding a second shift and more than 1,200 hourly and salaried jobs. The addition of a second shift will increase the plant's workforce to approximately 2,800 people when hiring is completed. The second shift is necessary to meet forecasted market demand for the five cars produced at Detroit-Hamtramck. "This is the result of the award-winning vehicles Detroit-Hamtramck produces and the confidence GM has in our team to build world-class quality for our customers," said Plant Manager Gary West. Second shift hiring is underway, and the shift is scheduled to begin operations in early 2016. "The workforce at Detroit-Hamtramck is second to none," said UAW Local 22 Shop Chairman Don LaForest. "We appreciate the opportunity to expand our UAW-GM family." The 4.1 million-square-foot Detroit-Hamtramck Assembly opened in 1985. GM has invested $1 billion in the plant over the last six years, making it one of the company's most-agile manufacturing facilities in North America.