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2019 GMC Sierra carbon fiber bed: How it's made

FORT WAYNE, Ind. — The redesigned 2019 GMC Sierra has some pretty nifty features, and the one that has had the most attention is the MultiPro flipping and folding tailgate. But the Sierra also features the first-of-its-kind carbon fiber truck bed. It's interesting, of course, for its capabilities, such as being 62 pounds lighter than the all-steel box. It even adds more cargo volume since the material can be assembled and shaped differently from steel. As it turns out, the assembly process is cool, too, which we learned when GMC invited us to see the beds being made. Every GMC carbon fiber bed starts out as perfectly flat sheets of thermoplastic carbon fiber. The sheets consist of a mix of fibers and resins, a bit like the molded carbon fiber parts Lamborghini uses. The sheets are manufactured by Japanese company Teijin, which collaborated with GMC to develop the bed. They're all delivered to Continental Structural Plastics (CSP) in Fort Wayne, Ind., for construction into the actual bed. The company, a subsidiary of Teijin, makes a wide variety of composite and plastic parts for the car industry, including body panels for the C7 Chevy Corvette. The rectangular sheets are cut to shape and stacked up at a giant stamping press. Robots pick up sheets and slide them onto a conveyor that goes into a large oven. The heat softens the parts so they can be stamped. The large primary bed parts such as the base are stamped by CSP's enormous 3,600-ton press, and the smaller ones go through a 1,000-ton press. Each press can do different parts using different stamping dies, and CSP switches between dies to produce different batches of parts. After stamping, the parts roll out mostly ready for assembly, but there are rough edges that are trimmed off by water-jet cutters. These cutting machines also create holes for fasteners and for parts such as tie-down hooks and lights. The stamping process also provides the carbon fiber bed with a unique Easter egg. On the bottom of the base of the bed, there are two words: "Connors Way." This is a tribute to Tim Connors, who was the chief engineer of manufacturing at GM and a strong proponent of the carbon fiber bed. He was tragically killed in a motorcycle crash a few years ago. The words were added to honor him, and they were fortunately approved for production. There are some components to the bed that aren't stamped from the flat sheets of material.

2015 Chevy Tahoe, Suburban and GMC Yukon unveiled

General Motors has today unveiled its new family of fullsize SUVs, including the 2015 Chevy Tahoe, its longer Suburban sibling, and their GMC Yukon, Yukon XL and Yukon Denali cousins. More efficient powertrains, improved aerodynamics, increased connectivity and better overall refinement are what Chevy and GMC say will separate their new SUVs from the current generation.
Sporting a tried-and-true body-on-frame architecture, these full-size SUVs feature platforms that are stronger and offer a wider rear track for "a more planted stance," according to Chevy and GMC. Mounted at the front of each SUV is an EcoTec3 powertrain, which consists of a standard 355-horsepower, 5.3-liter V8 (or a 420-hp, 6.2-liter V8 for the GMC Yukon Denali alone) with direct injection, cylinder deactivation and continuously variable valve timing, that's paired with a Hydra-Matic 6L80 six-speed automatic transmission. The setup is said to be more efficient than before, though official EPA fuel economies for each vehicle are not yet available. To help the powertrain achieve the best possible fuel economy in these 5,000+ pound SUVs, the new styling was developed with aerodynamics in mind. For the same reason, electric power steering also makes its debut in the Tahoe/Suburban/Yukon family.
The front fascias of the Chevy Suburban/Tahoe and GMC Yukon are distinct, but from the base of the A-pillars back, they share most of the same styling cues. This now includes inlaid doors that tuck into the door sills, instead of over them, which improves aerodynamics and fuel economy, and lessens interior noise. The hoods and liftgate panels now are made of aluminum in an effort to reduce vehicle weight. Chevy and GMC also tout that the Tahoe/Suburban and Yukon don't share a single piece of sheetmetal or lighting element with the brands' full-size pick-up trucks.

2024 GMC Acadia to go big again for third generation

In July, spy shooters caught prototypes of the next-gen GMC Acadia wrapped up tight in camouflage. We couldn't make out any useful aspects but one: The coming third-gen Acadia is larger than the current second-gen. Remember, GMC debuted a smaller Acadia for the 2017 model year, lopping eight inches of length and three inches of width from the first-gen large mid-size SUV to create a smaller mid-size three-row SUV. The new prototypes appeared to show that decision would be reversed, now we have proof thanks to more comments unearthed from GM's recent Investor Day presentations in New York. Caught by GM Authority, automaker president Mark Reuss said, "Alongside the Traverse, we’ll move the GMC Acadia to a little bit different size standpoint. This comes in a little bigger than the old Acadia, so itÂ’s a big transformation for GMC and its part of the market." In a 2016 Automotive News piece about how GMC planned to increase sales volume, AN reported, "One potential avenue: venturing into Jeep's terrain. Industry sources believe GMC is drawing up plans for an SUV based on the same body-on-frame platform that serves as the bones of the GMC Canyon and Chevrolet Colorado midsize pickup. It's in the early stages — it doesn't appear to have been sourced to suppliers yet and the SUV's arrival isn't expected until 2020 or later." The first-gen 2016 GMC Acadia was 200.8 inches long, while a 2016 GMC Canyon Crew Cab with the roughly 5-foot bed was 212.8 inches long. It's thought that truncating the second-gen GMC Acadia to 193.4 inches long and 75.4 inches wide was intended to leave plenty of room for the planned SUV on the Canyon platform. However far that SUV project got, it was reportedly canned in 2018.   Hence an upsized Acadia returns. Reuss' comment about the Chevrolet Traverse could imply what's coming for the GMC, the Chevrolet being 205.9 inches long and 78.6 inches wide. A bigger Acadia could make a better sales proposition against the two-row Terrain, too. The Terrain costs almost $9,000 less than the Acadia and is 182.3 inches long and 72.4 inches wide. It's not clear when GMC plans to show the new Acadia, but the consensus is that it will go on sale for the 2024 model year. Expect an all-new cabin, Super Cruise capability and a front fascia reminiscent of the new Canyon. Powertrain options are a mystery.