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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: Chevy Impala bi-fuel sales; VW e-Up fire

Chevrolet has delivered about 200 units of its bi-fuel Impala so far. The automaker originally planned to begin sales in summer of 2014, but was delayed over a year due to quality concerns. Now, the bi-fuel Impala, which runs on both gasoline and CNG, has begun delivery, mostly to commercial and fleet customers. The car begins at $38,210 (including destination charges), and will be available at 3,200 US dealerships. Production of a 2016 model is underway. Read more at Green Car Reports. The US Department of Energy (DOE) has announced $35 million in funding for hydrogen and fuel cell technology projects. The money will support research and development, manufacturing, and early deployment of the technologies. The DOE also wants to bring together consortia to work together on fuel cell cost, performance, and durability, as well as hydrogen storage research. "As FCEVs become increasingly commercially available, the Energy Department is focused on advancements to enable hydrogen infrastructure including production, delivery, storage, and manufacturing, as well as continuing to reduce fuel cell cost and improve durability," the DOE said in a statement. Read more from the DOE. A Volkswagen e-Up! caught fire after a collision with a train in Norway. The driver, Christopher Traasdahl Saether, was able to jump from the electric Volkswagen before the train hit, and was physically unharmed. It also appears that there were no injuries among the passengers on the train. "It was quite a way to start the day," says Saether. A photographer at the scene reported that the car burst into flames when a salvage crew attempted to remove the wreckage from the railway crossing. See the video and read more (in Norwegian) from Fredriksstad Blad. Featured Gallery 2015 Chevrolet Impala Bi-Fuel View 14 Photos Related Gallery 2014 Volkswagen e-Up!: Quick Spin View 20 Photos News Source: Green Car Reports, DOE, Fredrikstad BladImage Credit: Chevrolet Government/Legal Green Chevrolet Volkswagen Alternative Fuels Safety Electric Natural Gas Vehicles recharge wrapup

UAW rejects GM contract proposal but makes a counter offer

The United Auto Workers union said a new comprehensive offer made by General Motors Co late Monday to end a two-week-old strike was not acceptable and said it had made a new counterproposal. UAW vice president Terry Dittes said in a letter to members "there are many important issues that remain unresolved." The union is awaiting GM's next proposal. He said GM's offer came up short on many issues.  Dittes said GM made a "comprehensive proposal" at 9:40 p.m. Monday. "This proposal that the company provided to us on day 15 of the strike did not satisfy your contract demands or needs. There were many areas that came up short like health care, wages, temporary employees, skilled trades and job security to name a few." Dittes is the union's vice president for GM relations and the UAW's lead negotiator in these contract talks. "We have responded today with a counterproposal and are awaiting GM's next proposal to the union," he wrote. "Regardless of what is publicized in print or social media, etc., there are still many important issues that remain unresolved." The strike, in its third week, has cost GM more than $1 billion, according to J.P. Morgan analyst Ryan Brickman. He said the cost per day in potential profit is $82 million. However, another analysis, by East Lansing-based consultant Anderson Economic Group, put the losses at $25 million a day. And the effects of the strike are expanding. GM said Tuesday the strike has created a parts shortage that forced the automaker to halt production at its pickup and transmission plants in Silao, Mexico, temporarily laying off 6,000 workers. Silao is where GM builds its highly profitable four-door crew cab Chevy Silverado and GMC Sierra pickups. The strike has also forced GM to idle some Canadian workers, and many suppliers have been forced to halt operations. About 48,000 UAW members went on strike on Sept. 16 seeking higher pay, greater job security, a bigger share of the leading U.S. automaker’s profit and protection of their healthcare.