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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:    

Toyota Land Cruiser returns, Porsche shows Mission X | Autoblog Podcast # 785

In this episode of the Autoblog Podcast, Editor-in-Chief Greg Migliore is joined by Senior Editor John Beltz Snyder. This week's big new is that Toyota officially confirmed the return of the Land Cruiser to the U.S. We also talk about GM adopting Tesla's charging standard, Porsche's Mission X electric hypercar concept, early issues with Tesla's Cybertruck, the possible return of the Chevy Bolt, some amazing barn find Ferraris and Le Mans. Also, we've been driving the Chrysler 300C, Toyota Sienna, Ford Escape and an electric school bus from Lightning eMotors. Send us your questions for the Mailbag and Spend My Money at: Podcast@Autoblog.com. Autoblog Podcast # 785 Get The Podcast Apple Podcasts – Subscribe to the Autoblog Podcast in iTunes Spotify – Subscribe to the Autoblog Podcast on Spotify RSS – Add the Autoblog Podcast feed to your RSS aggregator MP3 – Download the MP3 directly Rundown It's official: Toyota Land Cruiser is coming back to the U.S. GM partners with Tesla for Supercharger access, adoption of NACS Porsche Mission X concept points at brand's next hypercar 5 cool things about the Porsche Mission X concept car Leaked document shows significant early issues with Tesla Cybertruck GM CEO Mary Barra hints at Chevrolet Bolt's return on Ultium platform Historic Ferraris that were 'lost and found' go to auction in Monterey Some thoughts on Le Mans Cars we're driving 2023 Chrysler 300C 2023 Toyota Sienna 2023 Ford Escape Lightning eMotors electric school bus Feedback Email – Podcast@Autoblog.com Review the show on Apple Podcasts Autoblog is now live on your smart speakers and voice assistants with the audio Autoblog Daily Digest. Say “Hey Google, play the news from Autoblog” or "Alexa, open Autoblog" to get your favorite car website in audio form every day. A narrator will take you through the biggest stories or break down one of our comprehensive test drives. Related video: Green Podcasts Chevrolet Chrysler Ford GM Porsche Tesla Toyota Truck Coupe Crossover Hatchback Minivan/Van SUV Electric Sedan

2017 Chevy Bolt EV arrives in late 2016 with 200-mile range

For those keeping track, the production 2017 Chevy Bolt that was just revealed at CES in Las Vegas is, well, pretty much just what we were expecting. As promised, GM claims the EV crossover-ish hatch will have a 200-mile range, and be "affordable." While pricing hasn't been announced, we've posited in the past that "affordable" is code for around $30,000 after incentives. The Bolt will use a couple of features, both novel and expected, to enhance range. The EV is expected to use information on the owner's driving history, the weather outside, the terrain, and even the time of day to help manage and predict range. The nav system will optimize routes to conserve range, if needed, and show nearby charging stations. That should ease, if not eliminate, range anxiety. Another range-conserving feature is a low-draw Bluetooth system. Speaking of charging stations, there's no word so far about how long it'll take to recharge a Bolt, or the capacity of the battery pack. Inside, the large center-mounted MyLink screen measures a full 10.2 inches, and provides a display for the wide-angle rear camera with a birds-eye view capability. OnStar provides 4G LTE and a wifi hotspot to occupants, and the sorts of efficiency and driving habit apps you'd expect will be available. It seems like remote start and cabin preconditioning will be standard. Interestingly, the Bolt will feature "Gamification" features intended to promote efficient driving by pitting Bolt drivers against each other for green driving awards or rankings. Details on are sparse on this feature, but then again, information on the Bolt in general is a little sparse right now. If you want to know things like detailed specs, the specifics of chassis componentry, or even trims and options, you'll have to wait. Check out our first quick spin of a prototype Bolt in Las Vegas for a preview of what GM's EV is like on the road. Chevrolet Introduces 2017 Bolt EV First long-range, affordable EV with customer-focused connectivity LAS VEGAS – Chevrolet is introducing the 2017 Bolt EV at the Consumer Electronics Show, fulfilling its promise to offer a long-range, affordable electric vehicle for the masses. The Bolt EV, which will go into production by the end of 2016, will offer more than 200 miles of range on a full charge. It also features advanced connectivity technologies designed to enhance and personalize the driving experience.