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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.

UAW Chief Shawn Fain disrupts Detroit's labor tradition

He's known to quote the Bible and Nation of Islam civil rights leader Malcolm X. He's a social media fanatic who keeps the pay stubs of his union member grandfather in his wallet. And now, Shawn Fain is representing nearly 150,000 auto workers in one of the biggest labor strikes in decades. In taking action against all three Detroit carmakers, Fain, the head of the United Auto Workers, has remade the strategy of the union he leads, choosing a bolder, much riskier path than his predecessors after he won office by a narrow margin in a first-ever direct election earlier this year. The strike started as the clock hit midnight on Friday, and followed Fain's decision to open negotiations with Ford Motor, General Motors and Stellantis simultaneously and eschew public niceties involving choreographed handshakes that famously kicked off previous negotiating efforts. The strategy is not without risk. A weeks-long strike would hit workers who live paycheck to paycheck, while the Detroit Three automakers have billions in cash to withstand the walkout. Fain, 54, has made creative use of social media, appearances on network and cable news programs and alliances with high-profile progressive politicians such as U.S. Senator Bernie Sanders, to reframe the UAW's contract bargaining as a battle to re-set the balance of power between workers and global corporations. He has rebutted automakers' concerns about labor costs by pointing out that they have poured billions into share buybacks to benefit investors. "If they’ve got money for Wall Street they sure as hell have money for the workers making the product," he said. “We fight for the good of the entire working class and the poor." In lengthy social media talks to UAW members, Fain alternates quoting Bible verses with the use of charts and graphs to dissect wage and benefit offers from the automakers - details his predecessors kept behind closed doors during bargaining crunch time. Fain, in his unorthodox approach, ran what amounted to a public auction among the companies to push each one to top the other to avoid a costly walkout. Prior UAW presidents picked just one automaker to set a pattern for the other two. Over and over, Fain has told UAW members at the Detroit Three that they can reverse 20 years of wage and retiree benefit concessions, stop further plant closures and end a seniority-based, tiered compensation system that pays new hires as much as 44% less than veteran workers.