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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.

Ferrari SUV and Aston Martin in Formula E? | Autoblog Podcast #529

This week, Editor-in-Chief Greg Migliore is joined by Green Editor John Beltz Snyder. They discuss Ferrari's SUV plans as well as Aston Martin's Formula E consideration. They also talk about cars we've driven including the Chevy Colorado ZR2, a Nissan Rogue ProPilot prototype and a Ford Shelby GT350. This week's podcast also features a car you don't need a license to drive. Autoblog Podcast #529 Your browser does not support the audio element. Get The Podcast iTunes – Subscribe to the Autoblog Podcast in iTunes RSS – Add the Autoblog Podcast feed to your RSS aggregator MP3 – Download the MP3 directly Rundown Ferrari SUV FCA keeping Jeep Aston Martin mulls Formula E Cars in the office: Ford Shelby GT350, Chevrolet Colorado ZR2, Nissan Rogue with ProPilot Assist The List: Drive a car that requires no license 3 Big Questions: Ferrari SUV or Lamborghini SUV? Chevy Colorado ZR2 or Toyota Tacoma TRD Pro? Ford Shelby GT350 with or without Performance Package? Spend my money Feedback Email – Podcast@Autoblog.com Review the show on iTunes Green Podcasts Aston Martin Chevrolet Ferrari Ford Jeep Lamborghini Nissan SUV Electric Performance Videos Formula E shelby nissan propilot

Chevy Volt 'Drive My Way' test cuts out the dealership

Last month, the 2016 Chevrolet Volt won the 2016 Green Car of the Year Award at the Los Angeles Auto Show. Awards are nice, but General Motors is now offering to make some folks' familiarity with the second-generation Volt a little more personal. Chevy is enacting what it calls the "Drive My Way" program, where the automaker brings a 2016 Volt directly to some prospective buyers for a 30-minute test drive with no dealer required, according to Hybrid Cars. Kind of like Tesla, only different. RedCap Valet is administering the program and is helping to track drivers' behind-the-wheel behavior, including keeping records on speed, acceleration, and braking habits. General Motors representatives didn't respond to a our request for further details about how many people will be chosen for the program or how these folks were picked to participate in "Drive My Way." Through November, the Volt's sales were down 23 percent from a year earlier to about 13,000 units, so any momentum for the 2016 version is a good thing. If you're just looking for numerical improvements, the new version has got you covered. It can go as far as 53 miles on electricity alone (about 15 miles further than the previous generation model) and it's got better miles per gallon and MPGe ratings as well. Of course, numbers alone aren't usually enough sell a car. Experience counts. So we ask, dear readers, if having a 2016 Volt brought to you for a half-hour test drive might make it more likely that you'll buy one of these extended-range plug-in vehicles. While you're waiting for a new Volt to arrive at your house, you can take a look here for our First Drive review. Related Video: Featured Gallery 2016 Chevrolet Volt: First Drive View 24 Photos News Source: Hybrid Cars Green Chevrolet GM test drive volt extended-range plug-in