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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.

2023 GMC Sierra HD 2500 and 3500 will get more expensive

GMC Sierra HD pickups are about to get more expensive again after recently becoming more expensive, according to GM Authority. In July, GMC and Buick raised the prices on certain vehicles in their lineups anywhere from $975 to $1,675 by making the previously optional OnStar a standard feature. Next year, every GMC and Buick model will adopt the upgrade. The big boy Sierra HD gets the biggest increase, being $1,500 for three years of OnStar and the Connected Services Plan plus another $175 for to be "OnStar & GMC Connected Services capable." GMA says the MSRPs for the entire 2023 Sierra HD range will be increased $1,000 on top of that. After doing the math, though, we suspect the increase could in fact be anywhere from about $800 to at least $1,100 after factoring for OnStar. The GMC configurator rings up a price of $43,670 for an entry-level Regular Cab Sierra HD Pro 2WD, GMA says next year's price will be $44,770. GMA didn't break out the next year's destination charge, it's possible GMC is adding $1,000 to the MSRP and $100 to destination. We'll find out when official pricing is announced. GMA's table shows a price of $49,795 for the least expensive SLE trim, whereas the current configurator indicates the truck can be had for $47,295 — a $2,500 difference. The SLE configurator doesn't show any charges for OnStar the way the Pro trim does. So it's possible that after backing out a potential $1,675 for OnStar, the gravy on top is just $825. Not that your wallet will care where how the potato is being sliced when the potato costs an additional $2,500 no matter what. The least dear 2022 Sierra 3500 starts at $43,195 going by the configurator. GMA says that model will command $45,970 next year, a $2,775 difference. As with the 2500 HD SLE, the configurator doesn't show the OnStar charges for the base 3500 Pro trim; subtracting the $1,675 takes us back to the $1,100 difference that appears to be at the heart of all of this. If all goes to plan, the 2023 Sierra HD will give way to a heavily refreshed 2024 model with interior upgrades cribbed from the Sierra 1500. Spy shots reveal a reconfigured instrument panel with a larger infotainment touchscreen of a likely 13.4 inches among the interior tweaks. Related video: This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings.

2022 GMC Hummer EV could get a rival from China's Dongfeng

The popularity of GMC's Hummer EV hasn't gone unnoticed in China. State-owned carmaker Dongfeng is reportedly planning to launch an electric version of the M50 Warrior, a Hummer-like off-roader, that will inaugurate a new sub-brand dedicated to battery-powered trucks. Without citing sources, website Car News China wrote that the division will be called M, a letter that stands for something completely different if the cars that you're into come from Munich. Executives are initially planning three models called M18-1, M18-2, and M18-3, respectively. The M18-1 will reach the market first, and it's described as an electrified M50 Warrior (pictured) with seating for six. Dongfeng will build the M18-1 on a new architecture called MORV that was developed in-house. The powertrain will develop up to 1,072 horsepower, which is 72 horses more than the most powerful version of the Hummer EV, yet the zero-to-60-mph time will check in at under 5 seconds, which is roughly 2 seconds more than the GMC. It will offer around 310 miles of range thanks to a 140-kilowatt-hour battery. Another interesting point is that the M18-1 will supposedly be much lighter than the Hummer EV — it will even weigh less than the gasoline-powered M50 Warrior that it's based on. It will tip the scale at around 6,900 pounds and stretch about 205 inches long, compared to 9,046 pounds and 217 inches for the Hummer. Of course, these numbers are purely hypothetical until the truck starts rolling off the assembly line. Speaking of, production is tentatively scheduled to start in 2023 in a factory that's currently being built in China. Dongfeng expects to sell approximately 4,160 units per month, though nothing suggests that the M18-1 will venture onto the GMC Hummer EV's home turf. Related video: This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings. Green GMC SUV Electric Off-Road Vehicles