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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.

2019 Hyundai Kona Electric First Drive Review | No compromises

The results of last week's United Nations climate study reveal that Earth's climate situation is much more dire than previously thought. Unless we do something drastic to stop pumping carbon emissions into our atmosphere, we'll do irreversible damage by 2030. It seems almost prophetic, then, that Hyundai is launching two vehicles — the hydrogen-powered Nexo FCV and an all-electric variant of the recently launched Kona crossover. The more compelling of the two is the Hyundai Kona Electric. It joins other purely battery-powered machines such as the Nissan Leaf, the Chevy Bolt and the Tesla Model 3, but the Korean automaker one-ups the competition by arriving in the form of a crossover. Americans can't get enough of them, and no other pure electric on the market offers it unless you're talking about the $83,000 Tesla Model X. The Kona EV's next closest competitor is the boxy electric Soul, and in case you didn't know, Kia's affiliate company is none other than Hyundai. In truth, the crossover moniker isn't entirely accurate. Like its internal-combustion-engined counterpart, the Kona EV doesn't really sit above regular car height. Rather than call it a compact crossover, it'd be more appropriate to label it a hatchback with some rugged-looking body cladding. The Kona Electric does, however, top nearly all of its EV rivals for cargo space, with 19.2 cubic feet. Only the Leaf tops it at 23.6 cubic feet, but the Kona's footprint is almost a foot shorter than the Nissan's. Visually, the Kona Electric is distinguished from its petrol-powered sibling by a grille-less face, replaced by an LCD readout grid pattern with the charging port neatly hidden beneath a panel on the left side. A new light bar spans the prow, connecting the upper driving lights in a digital wave pattern repeated in the lower front, side and rear skirts. It's meant to evoke the pathways in a circuit board, according to senior chief designer Chris Chapman. Inside, more differences serve to remind you that you're sitting not just at the helm of a crossover, but a shuttle to the future. An array of PRND buttons and an electronic parking brake await your instructions. Neither seemed necessary nor an improvement over the Kona classic's tried-and-true gear selector and handbrake, but there they were. The e-e-brake perhaps does permit the double-decker center console, though, the lower level meant for gadget recharging, whether via USB or Qi wireless.

Ford reveals the Mustang Cobra Jet, we drive the Chevy Silverado | Autoblog Podcast #550

On this week's Autoblog Podcast, Editor-in-Chief Greg Migliore is joined by Senior Editor Jeremy Korzeniewski and Associate Editor Joel Stocksdale. We discuss the just revealed 2018 Ford Mustang Cobra Jet drag car, along with our driving impressions of the 2019 Chevy Silverado and the 2018 Subaru BRZ tS. We also have a long discussion about the Jeep Wrangler Scrambler, Ford Ranger and small trucks in general.Autoblog Podcast #550 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 2018 Ford Mustang Cobra Jet reveal 2019 Chevy Silverado first drive 2018 Subaru BRZ tS drive impressions Jeep Wrangler Scrambler off-road spy shots 2019 Ford Ranger configurations and small truck discussion Feedback Email – Podcast@Autoblog.com Review the show on iTunes Related Video: Podcasts Chevrolet Ford Jeep Subaru jeep wrangler pickup jeep scrambler subaru brz ts jeep wrangler scrambler