2008 Cadillac Srx Lux. Collection Navigation Sunroof on 2040-cars

Auto blog

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:    

2020 Cadillac XT5 spied undisguised with infotainment from CT5

The reveal of the 2020 Cadillac XT5 crossover must be seriously near, because one of our spy photographers caught the new one completely undisguised. Seriously, there aren't any vinyl coverings anywhere, and the interior was completely bare, too. The update is minimal for the most part, but the interior reveals a big infotainment change. Before we get inside, we'll do a quick overview of the exterior. The front grille has a new mesh insert, and the lower air dam has a wider, thinner metallic accent. At the back, the colors for the faux skid plate or diffuser motif have been swapped. And that's it for the exterior. See? Told you it would be quick. The interior is nearly unchanged, too, except for the aforementioned infotainment system. Instead of the current model's touchscreen-only interface, the new XT5 adopts the control knob featured in the XT4, XT6 and CT5. It fits quite naturally behind the electronic shift lever. If it's like the system in other Cadillacs, fans of the touchscreen shouldn't worry, because you'll still be able to use the touch functions if you wish. Odds are we're months away from the new XT5 hitting dealers, since this is clearly a finished prototype. It will most certainly offer the same 3.6-liter, 310-horsepower V6 and 8-speed automatic of the current model. It's possible Cadillac will introduce a slightly more affordable 2.0-liter turbocharged inline-4 as an option, possibly even a turbo inline-4 hybrid powertrain, since both powertrains are available on the current Chinese-market XT5.

2020 Chevy Tahoe High Country spied along with next-gen Escalade

Have no fear, the big grilles are here. Or, at least we think they're coming. One of our spy shooters caught the next-gen Chevrolet Tahoe and Cadillac Escalade out testing with more of their fronts ends exposed than before. Starting with the Tahoe, we can see what amounts to a blinding amount of chrome under the wrappings. We're guessing this would be a new Tahoe High Country trim level, mirroring the range-topping trim level currently offered on the Silverado and Traverse. The Tahoe's current range topper is the Premier. Although the rather ornate details in the grille are not found on the current High Country trims, they also seem like something that would be available on the priciest Tahoe available. The same could be said of the LED lighting details visible under the camo as the Silverado High Country, shown below, does indeed have unique LED elements. The next-generation Cadillac Escalade only shows up in two of the photos. As we can't see shiny chrome reflecting through the camo, we're guessing the Escalade will adopt a blacked out grille similar those found on the XT6 and other Cadillacs. We can also see horizontal lighting elements similar to those on other recent Cadillacs. As this is an Escalade, however, we'd imagine everything will be supersized. GM will be ushering these trucks out soon, with the independent rear suspension being the big story. Besides the improved ride and handling, it should result in substantially improved cargo space and third-row legroom. Doing so would at least close the gap with the biggest Lincoln and Ford SUVs.