2012 Gmc Sierra 2500hd Denali 4x4 6.6l Diesel, Nav, Roof, Rr Camera, 25k Miles on 2040-cars

Auto blog

Next-gen Chevy Silverado and GMC Sierra may use carbon fiber

It's been generally accepted that the next generation of full-size GM trucks will use some sort of strong, lightweight material for the beds while retaining steel for the cab. While aluminum seems like the most obvious choice, according to Automotive News, the Chevy Silverado and GMC Sierra will incorporate both aluminum and carbon fiber in their beds. The publication cites sources from within GM, though it seems the introduction of this comparatively exotic material mix is still a few years off. While carbon fiber is both stronger and lighter than steel and aluminum, it takes significantly more time and money to produce, essentially relegating the material to small-volume cars. The main benefit for trucks is the resulting reduction in weight to improve fuel economy without sacrificing the tough, rugged capabilities truck buyers expect. The Ford F-150 made the switch to aluminum for the 2015 model year and it's proved highly successful. It seemed like it was only a matter of time before the competition followed suit. Automotive News says that the next-gen trucks will launch with aluminum beds and that it will take a couple of years before we'll see any carbon fiber incorporated into the design. Even then, only look for the composite material on higher-trim models, with a trickle down to lower-spec trucks possible further in the future. In 2011, GM announced it was working with Japan-based Teijin Limited on a carbon fiber reinforced thermoplastic. There's a good chance that material's introduction will be on trucks. Related Video: News Source: Automotive News Plants/Manufacturing Rumormill Chevrolet GM GMC Truck

GM recalling Silverado and Sierra HD diesel pickups over fuel gauge follies

General Motors is recalling 9,733 of its heavy-duty twins over concerns with their 6.6-liter diesel engines and dual fuel tanks. The recall covers some Chevrolet Silverado HD and GMC Sierra HD pickups from model years 2012 and 2013, although the exact dates that the recalled trucks were built isn't specified. There's also no mention of how many models come from Chevrolet and how many are from GMC.
The problem rests with the transfer pump responsible for moving fuel from the rear tank to the front tank - it could fail, resulting in an inaccurate fuel gauge. It hardly requires explaining, but a faulty fuel gauge could leave drivers in a situation where they run out of diesel.
GM will begin notifying customers of affected vehicles, who will be asked to report to their dealers for a free replacement transfer pump.

GMC Hummer EV pickup reveal postponed

We’re pretty excited about the all-electric Hummer pickup coming from the GMC brand. GM is too, enough to spend Super Bowl money on an ad teasing it. Today, we received an update from GM about the Hummer EV, with good news and bad news. The bad news: GM has announced that it is postponing the May 20 reveal for the Hummer. With the coronavirus throwing the proverbial wrench into a number of vehicle operations, including reveals, we canÂ’t say weÂ’re surprised at all. The good news, GM assures us, is that development continues “undeterred.” GM understandably hasnÂ’t provided a new debut date for the GMC Hummer EV, but it did provide us with the new short teaser video above. WeÂ’ve seen other details in previous teasers, as well. We were lucky enough to see the Hummer EV in person last month just before the pandemic began causing the world to grind to a halt. At GMÂ’s EV Day at its Warren, Mich., campus, the Hummer pickupÂ’s exterior was on full display. ItÂ’s a big, off-road-ready pickup complete with giant all-terrain rubber and tow hooks. It features removable roof panels for access to the open sky, which appears to be depicted in the teaser above. It features sail panels behind the C-pillars, similar to those on the Chevy Avalanche and Honda Ridgeline. Its bed was concealed with a tonneau cover, but it sported GMCÂ’s MultiPro tailgate that we first saw on the Sierra Denali. Interior photos showed a spacious interior with blocky shapes, squared hourglass vents that mirror the look of the taillights and a lunar theme that incorporates the topography of the Sea of Tranquility into things like the floor mats and speaker covers. It also has a large infotainment screen as well as a digital instrument panel. The Hummer pickup will be offered with a number of electric powertrain options, the most powerful of which will provide 1,000 horsepower and a 0-60 mph time of less than three seconds. Like the rest of the next generation of GM EVs, it will use the automakerÂ’s new Ultium modular battery and powertrain technology. While we donÂ’t have further details about a potential reveal date, we also know a Hummer electric SUV based on the pickup will follow at some point. It, too was on display at GMÂ’s EV Day. It looks exactly like the Hummer pickup from the rear doors forward, but with a shorter wheelbase and enclosed cargo area in the rear. It also sported a liftgate-mounted spare.