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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.

2016 Chevy Volt ads strike frustrating, yet familiar, chord

Sometimes, it's hard to let go. In the six years that GM has been advertising and selling the Chevy Volt, one dominant message is that the car is an EV without any range anxiety. On the one hand, this is a positive thing: our car does something that other electric vehicles don't. Of course, there's another, more reasonable take on the message that EVs only equal limited range: don't promote this viewpoint if you ever plan on selling a pure EV. But, of course, this is exactly what GM is doing with a new ad for the 2016 Chevy Volt. Called Elevator, the spot (watch it above) compares driving an all-electric car with riding in an elevator getting stuck. Your Nissan Leaf might run out of electricity, the ad says, and that would be as uncomfortable as being trapped between floors. The main problem, of course, is that Chevy also offers the Spark EV and is getting ready to sell the Bolt EV. Does the company think that everyone will forget these anti-EV commercials when it come time to shop for a Bolt? Even worse, does GM think we've forgotten the Anthem ad for the Volt back in 2010? Apparently, so. Elevator isn't the only ad for the 2016 Volt that GM debuted today. The other, called Time Capsule (below), takes a swipe at the Toyota Prius. Trouble is, there are two easy ways to dismiss this ad as well. First, and most obviously, if GM is against using old technology, then why does it continue to shove a 100-year-old fossil fuel engine into almost every car it builds? Second, attacking the Prius for using 15-year-old tech – when said tech is still able to mop the floor with any hybrid from GM in the fuel economy race - is more like an admission of defeat than anything to be proud of. "Hey look, the Prius uses technology from the '90s," GM says. To which the observant viewer will ask, "Well, then why can't you build a 50-mile-per-gallon hybrid, GM?" It's also worth noting that Chevy has been on a misguided advertising streak as of late. We bashed their ads that suggested its Silverado is better than the F-150 because it uses steel instead of aluminum, too, especially since those commercials used shark cages and stupid superhero costumes in an attempt to make a point. Chevy, stop assuming we're all idiots. Please. Now, the 2016 Volt is a great car and I know that GM can make a darn good Volt ad (like this one), so seeing the company shoot solid fuel-efficient technologies in the back (again and again) is just frustrating.

No, Cadillac is not killing its flagship CT6 sedan

Mark Twain never actually said that reports of his death had been greatly exaggerated. But if the Cadillac CT6 could talk, those are the exact words it would use. Speaking to Jalopnik, Cadillac chief Johan de Nysschen confirmed, emphatically, "There is absolutely no plan, at all, to cancel the CT6." In fact, says de Nysschen, the CT6 will soon be the beneficiary of significant investment. "The [CT6] forms a very important part of our product strategy going forward for the brand. The car also has a very major contribution to make to the shaping of brand perceptions, and the transformational process that Cadillac is undergoing." For instance, expect the CT6 to spearhead General Motors' most advanced forays into self-driving automobile technology. Interestingly, though, the Cadillac ATS and CTS sedans probably won't live past their current generations as the automaker 're-balances its sedan portfolio.' Replacement models are "in development" right now, says de Nysschen, which will "much more clearly separate the market position, both in terms of target customer demographics, in terms of market segments and in terms of price points between these three sedan lineups." So, that's confirmation that the Cadillac CT6 is going to stick around for a while. But what of other models cited by Reuters to potentially be killed, like the Buick LaCrosse and Chevy Impala and Volt? Read our take on that here, but suffice it to say that we don't think they're in danger, either. Related Video: News Source: JalopnikImage Credit: VCG via Getty Plants/Manufacturing Buick Cadillac Chevrolet Electric Hybrid Luxury Sedan confirmed cadillac ct6