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Why an independent rear suspension for GM's new, full-sized SUVs wasn't easy

A Motor Trend report last month laid out how Cadillac's 4.2-lier twin-turbo Blackwing V8 could be an orphan due to cost concerns in the GM empire. Last-minute chassis changes to Cadillac's new sedans and XT6 crossover led to engine bays that couldn't fit the Blackwing. On the SUV side, according to the report, the new independent rear suspension for big people haulers cost so much to implement that GM ruled out reworking the Escalade to accept the Blackwing. At least one commenter rightly asked how could a suspension swallow that much money. A new piece in Motor Trend has the answer. The excellent Alissa Priddle spoke to Tim Herrick, GM's executive chief engineer for full-size trucks, about why the clean-sheet IRS cost "multimillions of dollars."  First, GM would need to build a new body shop at the Arlington, Texas plant that assembles the automaker's big SUVs to stamp the numerous wholly new parts and panels accommodating an IRS. Then GM would need to design and pay for a new assembly process. On top of those up-front costs, there was the incremental cost of the four-link IRS components being more expensive than those in the trucks' former leaf-sprung solid axles. Herrick endured so many rejections for so long that he remembers the date and time when he got approval for the new unit. He said it came down to a meeting where he told a higher-up, "I'll make you a deal: If we get to the reveal, or if we launch this and you think this was a dumb idea, I'll hand you my badge and let you walk me out." Head to Motor Trend to read the full story. Based on Herrick being on stage to help present the new SUVs to the press, and on our First Ride in the new Chevrolet Tahoe and Suburban at GM's Milford Proving Grounds, it appears this will have a happy ending for all involved. Furthermore, since Herrick worked on the T1 platform that supports the big SUVs as well as the light- and heavy-duty pickups, he understood the demands on the commercial side, too. That could be why when Roadshow asked Tim Asoklis, chief engineer of the Tahoe and Suburban, if the new IRS could endure life in the Chevrolet Silverado and GMC Sierra, Asoklis answered, "Oh, absolutely." Related Video:    

GM says its electric pickup truck is 'in development'

GM President Mark Reuss just reiterated the company's support for an electric pickup project. He also claimed that GM is going to be selling its future electric cars at "very average transaction prices" during the same conference with Wall Street analysts. Previously, Mary Barra informed the world of GM's electric pickup truck aspirations, but didn't tell us anything else. Reuss says the truck is already in development, though, according to a Wards Auto report. "We will have a complete electric lineup, including a pickup truck that's in development," Reuss said. This comment marks the second time GM has gone on the record about its intentions to bring an electric pickup to market. Additionally, Reuss said GM's third-generation global EV platform will be used to help develop the electric pickup. This platform was recently announced to underpin at least 20 new EVs from GM in the future — the platform itself is slated to be unveiled in 2021. Of course, this platform will be flexible and modular to allow various body styles to be used with it, a truck being one of those. Reuss still hasn't said what GM brand the pickup will be sold under, or what class of truck it will be. GM thinks this new platform is also going to be what helps it drive down the cost of building EVs. "We'll reach parity a lot sooner than people think," Reuss said comparing EVs to traditional gas-powered engines. "We're driving down the cost of batteries and the whole EV in general." As for electric pickups, Ford is also deep in development of its own electric F-150. However, neither of these truck projects have official timelines on them, so we can't say when they'll hit the market. For now, the cross-town rivals are both in development with their respective electric pickups. Even further across town is Rivian (in which Ford just invested half a billion dollars), a company that says its electric R1T pickup is right around the corner, with the official due date being end of 2020 for the time being. Green Chevrolet GMC Green Culture Green Driving Truck Electric Future Vehicles

2015 Chevy Silverado Custom Sport is subtle in black

In a world where trucks are growing bigger, bolder grilles and more muscle-bound looks, Chevrolet is trying something a bit different with its recently revealed Custom Sport edition for the 2015 Silverado at the this year's Detroit Auto Show. The edition leans on being understated, instead of screaming about its abilities. The design is supposed to be a throwback to the Chevy Custom Sport Trucks of the late '60s that brought a touch of elegance to these usually utilitarian vehicles at the time. The heart of the package is its monochromatic body-color touches for the bumpers and grille surround. The one on display at the show is especially attractive with a chrome-accented black grille that fits perfectly with the rest of the body. The edition does get a bit more shine with chrome covering the 20-inch wheels, door handles, mirror caps and side moldings. In addition, buyers get projector beam headlights, tow hooks and heated power mirrors. The custom package is available on the LT trim in black or white and on the LTZ in black or White Diamond Tricoat. Take a look at this monochromatic take on the Silverado as it sits in the Motor City. 2015 SILVERADO OFFERS CUSTOM SPORT PACKAGE Inspired by Chevy Custom Sport Trucks that helped launch personal-use pickups DETROIT, 07/01/15 – With the new 2015 Silverado Custom Sport special edition, Chevrolet pays homage to one of its most iconic pickups, adding a sophisticated monochromatic look to double- and crew-cab Silverados. The Custom Sport package features body-colored front and rear bumpers and a body-colored grille surround with a chrome-accented black grille. Other accents include 20-inch chrome wheels, chrome door handles and mirror caps, and chrome body-side moldings. The package also includes projector beam headlamps, tow hooks and heated power-adjusted mirrors. "The Custom Sport special edition was inspired by Chevy Custom Sport Trucks of the late 1960s," said Sandor Piszar, Chevrolet Trucks marketing director. "Those CST models added a touch of elegance to a great all-around truck, just like the Custom Sport package for the new Silverado." The redesigned 1967 Chevrolet pickup entered the market at a time when trucks were starting to move off the jobsites and into the driveways of cities and suburbs. The 1967 Custom Sport Truck, with its bright trim, plush carpet and bucket seats, helped launch a wave of personal use pickups that continues today.