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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:    

Rumor: 2016 Chevy Volt gets 53 miles EV range, 40% increase

While we're still waiting for the official word from GM, news is creeping around the Internet that the 2016 Chevy Volt will get a big boost in all-electric range and gas-burning efficiency. According to new rumors out today, the second-gen Volt will be able to go 53 miles on a full charge, have 106 MPGe and be able to get 42 miles per gallon on the official EPA numbers. Compared to the outgoing first-gen Volt (38 miles EV range, 98 MPGe, and 37 mpg) these are all impressive increases. The all-electric range boost of almost 40 percent is the biggest surprise, though. We knew the new Volt would get better numbers than the first-gen model, but when GM debuted the car in Detroit earlier this year, it said it suspected the Volt would get a 50-mile range, 41 mpg and 102 MPGe. We'll be keeping an eye out for official confirmation of all these new numbers. Volt drivers are already making most of their driving miles electric. The number sits at about 80 percent currently, and GM has said it expects this to climb to 90 percent in the new model. GM said in May that the 2016 Volt will start at $33,995, a bit lower than the current Volt's MSRP of $34,170 before any tax breaks. So, for less money you'll be getting much better fuel economy. What's not to like about that? Preorders are already open for interested buyers in some parts of the country. Related Video: Featured Gallery 2016 Chevy Volt View 16 Photos News Source: GM Authority, Autoguide Green Chevrolet Fuel Efficiency mpg ev range

GM won't pay owners of recalled cars for lost value

Kenneth Feinberg, the man in charge of the General Motors compensation fund dealing with the its widespread ignition switch woes, has issued an informal, two-letter response to the plaintiffs in more than 70 lawsuits seeking redress for lost resale value of their Cobalts: "No." The cases were recently combined into one, but Feinberg told The Detroit News that the fund will deal "only with death and physical injury claims," and that "perceived diminished value" will get no consideration.
ALG, the firm specializing in establishing residual values, determined that Cobalt owners had lost $300 compared to the segment competition and doesn't envision any long-term effects from the recall situation. Feinberg's statement comes in advance of public details on how the compensation fund will work and adheres to GM's long-held position on the matter. The company has already asked a judge to throw out such suits using the pre-bankruptcy defense, even as it stopped using that defense in cases of injury and death.
With plenty of potential gain from the GM suit, however, don't expect the plaintiffs to give up yet. When Toyota was sued for the same reason during the unintended acceleration debacle, it eventually settled the case for between $1 billion and $1.4 billion just to get it over with. Since the 85 law firms involved in the Toyota litigation took home more than $250 million of that total, we shouldn't expect the attorneys to give up on a GM payout, either.