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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.

Nissan Leaf ends 2013 with best sales month ever, but can't catch Chevy Volt

Nissan and Chevrolet both ended 2013 with solid sales figures for their plug-in vehicles, the first two that were released (all the way back at the end of 2010) from major automakers. As has been the story for most of 2013, December sales for the Nissan Leaf and the Chevy Volt were roughly the same. When we left the year-to-date running tally at the end of November, the Volt was at 20,702, while the Leaf was at 20,080. As you can tell from the image above (if you've been noticing the trend in these EV sales monthly flash-reports), the Leaf outsold the Volt, but was it enough to put the Nissan on top for the year? In 2013, Nissan sold 22,610 Leafs, more than twice as many as in 2012. Almost. The Leaf made a valiant attempt, and did have its best month ever with 2,529 units sold. That means that for 2013, Nissan moved a total of 22,610 Leafs, more than twice as many as in 2012 (that year, Nissan sold only 9,819 Leafs in the US) and actually more than 2012 and 2011 Leaf sales combined (which was 19,493). Nissan continues to see the effects of its price drop and expanded sales areas, with Georgia rapidly becoming a Leaf hotbed. Nissan's Paige Presley said that Atlanta was once again the Leaf's number one market and that, "sales are expanding deeper into Georgia markets such as Macon and Columbus." The Volt saw a boost upwards from a November slump and sold 2,392 units in December. That puts the plug-in hybrid's annual total at 23,094, just down from the 23,461 sold in 2012. For all of 2013, though, the Volt outsold the Leaf by 484 vehicles. In a competition like this, we'll count that as a win for both sides. We will our more detailed monthly green car sales report, which covers more of the fuel efficient vehicles on the market, up soon. News Source: GM, Nissan Green Chevrolet Nissan Electric Hybrid PHEV ev sales hybrid sales

2015 Chevy Colorado gets its GearOn before Chicago

Complementing the Chevrolet Silverado Midnight Edition at the 2015 Chicago Auto Show is this, the 2015 Colorado GearOn Edition, which as the name might suggest, takes full advantage of the company's truck accessory catalog. Available on the volume LT trim and in both crew and extended cab varieties and with both the short and long-bed options, the GearOn Edition adds plenty of nifty extras designed to increase the truck's versatility and help accommodate bikes, kayaks and other outdoorsy items. The GearOn bars package, divider package and tie-down rings are supplemented an "EZ" lift and lower tailgate, side steps, gloss black 18-inch wheels, a body color grille, and blacked-out Chevy badges. And although it's not specifically called out in the attached press release, the paint on this special edition looks different than anything else in the truck's catalog. We dig it, especially with the black accents. Prices, meanwhile, start at $31,250, which is not even $1,200 more than a Colorado Extended Cab LT 4x4. We'll have more on the Colorado GearOn when it makes its debut later this week at the 2015 Chicago Auto Show, including live images to add to the pair of stocks distributed by Chevy. Until then, scroll down for the press release on the limited-edition truck. Chevy Colorado GearOn™ Edition Brings More Adventure Versatile accessories package maximizes cargo capability; enables more fun DETROIT – Chevrolet today introduced the 2015 Colorado GearOn™ Special Edition, which blends the capability of the all-new midsize pickup truck with the versatility of the GearOn accessory system – and additional popular features. It makes its public debut Feb. 13-22 at the Chicago Auto Show. The Colorado GearOn Special Edition goes on sale this spring with a starting price of $31,250. It's offered on LT models in extended or crew cab configurations, with the long or short cargo bed and available 4WD. "Chevrolet Colorado answers the call for customers who have passions of all types and the GearOn accessory system enables them to bring more adventure wherever they go," said Tony Johnson, Colorado marketing manager. "And with Colorado offering segment-leading efficiency and capabilities, it's a combination that maximizes adventure without compromise." The GearOn accessory system is designed for easy configuration with a multitude of mounting accessories for everything from bikes, kayaks, skis and stand-up paddle boards to a bed-mounted tent.