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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.

Recharge Wrap-up: Detroit Electric teaser video, Nissan Leaf is Good Housekeeping "Tried and Tested"

Detroit Electric has a new teaser video and has updated its brand in preparation of the introduction of the SP:01. The refreshed logo uses a blue and white color palette, and the company has also given its website a new look. The teaser video, which gives a sneak peek at the exterior of the SP:01, shows the car taking form in the midst of an electrical storm. Watch the video or learn more in the press release below. Abengoa is celebrating the grand opening of a commercial scale cellulosic ethanol plant in Hugoton, KS. When running at full scale, the refinery will produce up to 25 million gallons of ethanol a year. The plant will also generate enough electricity to power itself and put some back into the grid. Energy Secretary Ernest Moniz was on hand for the dedication, saying, "Every gallon of cellulosic ethanol produced and used to fuel our vehicles reduces the impact of harmful greenhouse gas emissions by greater than 60 percent as compared to conventional gasoline." Learn more at Energy.gov. Good Housekeeping has named the Nissan Leaf one of its "Tried and Tested" vehicles. The magazine called the Leaf SL its top "Roomy Electric" vehicle in its November issue. The magazine's research institute evaluated the EV based on track and road driving, ergonomics and convenience features. Good Housekeeping made note of the car's "impressive" range, but according to Nissan's Fred Diaz, "the real beauty of the Nissan Leaf is that it's roomy and, best of all, fun to drive." Read more in the press release below. Quasar Energy Group produces compressed natural gas from sewage and garbage. It uses things like grains leftover from brewing Budweiser, food waste from a baseball stadium and sewage sludge to produce the gas through anaerobic digestion. The compressed gas can then be used to power cars like Chevrolet's Bi-fuel Impala, which goes on sale later this year. Chevrolet likens the situation to the Delorean time machine in the Back To The Future movie series, which uses garbage to fuel its fusion generator. Watch the video and read the press release below to learn more. This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings. This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings.

2015 Chevy Colorado takes Motor Trend Truck of the Year calipers [w/videos]

The final winner of Motor Trend's prestigious Golden Calipers has been named, with the 2015 Chevrolet Colorado taking the title of 2015 Truck of the Year, likely shocking those who thought Ford's all-aluminum, next-generation F-150 would take the crown. But win the Colorado did, beating not only the new Ford, but two other brutish Blue Ovals in the F-450 and Transit. The midsize pickup also bested its brethren from General Motors, beating the heavy-duty Chevy Silverado 3500, GMC Sierra Denali 2500 and the GMC Canyon, the Colorado's fraternal twin. After an unprecedented two-year stint with the Golden Calipers, Ram sat this year's awards out. Most impressive about the Colorado's victory isn't that it simply beat the US market's other trucks, it did so with a unanimous vote. Praise from MT's editors focused on the trucklet's price, spacious interior, fit and finish and performance. Former Autoblog staffer Jonny Lieberman called the Colorado's steering the best he'd "ever experienced on any truck, full stop," in MT's awards article. "After days of testing, hundreds of miles on the road, and our most rigorous truck testing program to date, our editors unanimously selected the Chevy Colorado as our 2015 Truck of the Year," said MT boss Edward Loh. "Colorado is a smart, capable, and refreshingly honest truck that makes a strong value and efficiency statement. It's perfectly sized and suited for the needs of many of today's truck users." The Colorado joins the 2015 Volkswagen Golf and 2015 Honda CR-V among Motor Trend 2015 award winners. Scroll down for video commentary from General Motors CEO Mary Barra, Loh and a clip of the Golden Calipers being handed over. Also, check out GM's full press release on its big win. The video meant to be presented here is no longer available. Sorry for the inconvenience. The video meant to be presented here is no longer available. Sorry for the inconvenience. The video meant to be presented here is no longer available. Sorry for the inconvenience. MOTOR TREND Names Chevrolet Colorado 2015 Truck of the Year Midsize pickup outclasses competition in design, engineering, efficiency, safety and more 2014-12-03 EL SEGUNDO, Calif. – After its most comprehensive truck evaluation program in history, MOTOR TREND has selected the Chevy Colorado as its 2015 Truck of the Year®. MOTOR TREND's Truck of the Year program is only open to all-new or significantly updated trucks and vans for the upcoming model year.