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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:    

Despite De Nysschen saying it won't, Cadillac cuts struggling CTS prices

Ah, well that didn't last long. Not even two years after elevating the price of the then-new third-generation Cadillac CTS by $7,000, the company is now stepping back, telling dealers it will be slashing the price of the 2015 model by anywhere from $1,000 to $3,000. It seems that there are two reasons behind Cadillac's move. First, and most obviously, are its slumping sales, down seven percent last year. That figure is made worse, Automotive News reports, by the seven-percent gain made by the greater luxury market, not to mention gains from fellow American luxury brand Lincoln. Cadillac, meanwhile, also likely faced pressure from its dealer body, which AN reports hasn't been so keen on the price increases. The price reduction is something of a surprise following statements made by Cadillac President Johan de Nysschen shortly after he took office. In September of last year, the 54-year-old exec, who took charge of Cadillac in July of 2014, defended the company's decision to raise prices, telling Automotive News a price cut was "not going to happen." It seems current conditions contradict de Nysschen's statements, though. "We're taking what we've seen are the more desirable optional features for customers and making them more readily available," Cadillac's Dave Caldwell said of the price cut. "Once a car has been on the market for a while, it's not unusual to look at the customer behavior and try to optimize for it." In what's sure to be a pleasant surprise for anyone in the market for a CTS, the most expensive models are getting the biggest price cut, with the price on the Premium and Performance Collection sedans dropping $3,000, AN reports. The 2.0T will get a $2,000 drop, while certain optional extras will now be standard on the Luxury trim, including a panoramic sunroof, navigation and Bose stereo.

Cadillac ATS-V Coupe caught undisguised ahead of LA reveal

Vsport versions of the CTS and XTS sedans are all well and good, but what Cadillac enthusiasts have really been looking forward to is the arrival of the next full-on V model. And here we have it.
Spied in the nude during an apparent photo shoot ahead of its anticipated debut at the fast-approaching Los Angeles Auto Show, the upcoming new Cadillac ATS-V Coupe is set to pick up where the old CTS-V left off, only in a more compact form. Unlike previous spy shots of heavily disguised prototypes, this final version is showing a chrome-framed mesh grille, along with a deep lower air dam with what looks to be a carbon-fiber front splitter. That bulging hood with heat extractor vents is tipped to be packing a twin-turbo V6 engine, breathing out of quad exhaust tips.
The aggressive aero kit also encompasses side skirts, a reshaped rear bumper and a lip spoiler on the truck, while the upgraded rolling stock wears serious low-profile rubber and the brakes appear to be carbon-ceramic units. Peer through the window and you can even see the sport bucket seats with slots for racing harnesses. All of which suggests a serious American challenger to the BMW M4 and its ilk, and we're looking forward to seeing the vehicle in the metal in LA next month.