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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.

Steve McQueen's last movie car, now Pawn Stars-owned, up for auction [w/video]

The last car Steve McQueen ever drove in a movie is officially up for auction. The 1951 Chevrolet Styline DeLuxe Convertible you see above is now owned by none other than Rick Harrison of Pawn Stars fame, but once ferried McQueen around the set of his last film, 1980's The Hunter. That flick saw the Bullit star play a bumbling bounty hunter and didn't exactly set the box office on fire. McQueen bought the car after production wrapped, and four years later it sold at his estate sale at the Imperial Palace in Las Vegas.
Flash forward to 2003, and the convertible received a full restoration back to near-stock specifications. Hagerty Insurance estimates the car to be worth around $45,000 without the significant providence. Given its ties to one of film's most popular gearheads, the old Chevrolet could fetch up to 10 times that when it goes under the gavel in Ft Luaderdale, Florida on March 22. You can head over to the Auctions America site for more information. You can also check out the trailer for The Hunter below.

Chevrolet only automaker to win EPA's 2015 Climate Leadership Awards

Chevrolet was the only automaker to be on the list of entities for the US Environmental Protection Agency (EPA) Climate Leadership Awards. Of course, the accolades had nothing to do with any vehicle's tailpipe emissions, General Motors can still be proud. The automaker is engaging in what it calls the Chevrolet Clean Energy Campus Campaign. Chevy is working with the US Green Building Council, among other groups, to find ways for buildings in primary and secondary schools as well as college campuses to reduce their collective carbon footprint via better design. The EPA pointed out the "carbon performance methodologies" used by Chevrolet to run the program and spur lower emissions from its campus partners. The effort is part of Chevrolet's broader goal to reduce greenhouse-gas emissions by as many as 8 million metric tons of CO2. And it's going to take more than bunch of plug-in Volt and Spark EVs to do that. Other entities feted by the EPA include UPS, Bank of America, the cities of San Francisco and Oakland, Clorox and Tiffany & Co. Yes, Tiffany. Take a look at the EPA's press release below, and find out more information on Chevy's program here. UPS, Bank of America, SC Johnson Among 16 Organizations across the U.S. Recognized for Climate Action / EPA also recognizes Chevrolet Clean Energy Campus Campaign, San Diego Regional Climate Collaborative in new Innovative Partnerships Category WASHINGTON – From an innovative partnership enabling colleges to sell carbon credits to fund clean energy projects on campuses to some of the country's leading corporations setting and exceeding aggressive emission reduction goals, the U.S. Environmental Protection Agency's Climate Leadership Award winners announced today are demonstrating that innovative actions to combat climate change are smart business decisions. Sixteen organizations and one individual representing a wide array of industries from finance and manufacturing to retail and technology show exemplary corporate, organizational, and individual leadership in response to climate change. "I am proud to recognize our Climate Leadership Award winners for their actions to reduce the harmful carbon pollution that's fueling climate change," said EPA Administrator Gina McCarthy. "Our winners are demonstrating that a healthy environment and a strong economy go hand in hand.