2003 Cadillac Escalade (pearl White) on 2040-cars

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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:    

2021 Cadillac XT6 adds 2.0-liter turbo and new base trim in second year

The 2021 Cadillac XT6 has been announced, and the three-row crossover is going through a few notable changes in its second model year. There’s a new base trim and base engine, and Cadillac has added tech features to improve the experience. Starting with the new engine: ItÂ’s the 2.0-liter turbocharged four-cylinder that was initially introduced in the XT4 as the base motor. Power output is the same as the compact crossover at 237 horsepower and 258 pound-feet of torque. ItÂ’s paired with the nine-speed automatic transmission and comes with front-wheel drive as standard — all-wheel drive is a $2,000 option. That engine only comes with the new base trim level: Luxury. Every other trim receives the 3.6-liter V6. The new Luxury trim (pictured above) is being added to the lineup as a base model to compliment the Sport and Premium Luxury trims. This will be the cheapest and most basic of the XT6s, but you can still option all-wheel drive. Features include 18-inch wheels, the eight-inch touchscreen infotainment system, black leatherette seats (heated and powered in front), brushed aluminum trim, tri-zone climate control and a number of other smaller extras along with a suite of driver assistance technologies. Cadillac is also adding wireless Apple CarPlay and wireless Android Auto to the lineup as standard equipment — they were standard previously but required the traditional wired connection. ThereÂ’s also a new 20-inch wheel for the Sport model, and three new color options: Dark Moon Blue Metallic, Wilder and Infrared Tintcoat. The XT6 LuxuryÂ’s base price is $48,990, including the destination charge. ThatÂ’s a fair cut below the 2021 Premium Luxury ($53,790) and the Sport ($58,190) trims, but you are losing out on the additional equipment and luxury those trims offer. Cadillac says the updated 2021 XT6 will land in dealerships this fall. Related video:

GM might lose 90-year U.S. sales crown over chip shortage

Automotive News editor Nick Bunkley tweeted on October 1 that according to AutoNews data, General Motors "has been the largest seller of vehicles in the U.S. every year since passing Ford in 1931." With automakers having turned in light car and truck sales data for the first three quarters of 2021, GM's 90-year-run might not reach 91. According to AN figures, Toyota was 80,401 vehicles ahead when the October workday started. Worse, GM is so far behind its historic pace that it might only sell enough light vehicles in the U.S. to match its numbers from 1958.  Meanwhile, the New York Times put a few more salient numbers to the pain GM and Toyota are enduring alongside the the rest of the industry. GM sold 33% fewer cars in Q3 2021 than it did in Q3 2019 during the dark days of the pandemic, 446,997 units this year as opposed to 665,192 last year. GM's Q3 2020 was only down 13% on Q3 2019. Over at Toyota, the bottom line showed a 1% gain in Q3 2021 compared to 2020, with 566,005 units moved off dealer lots. The finer numbers show two steps forward and one step back, though; Toyota's September sales were down 22% compared to last year.  GM remains optimistic about what's ahead, GM's president of North American operations telling the NYT, "We look forward to a more stable operating environment through the fall." We'd like to see that happen, but we don't know how it happens. The chip shortage said to have been the inciting incident for the current woes isn't over, and not only can no one agree when it will be over, the automakers, chip producers, and U.S. government still can't get on the same page about who needs what and when. Looking away from that for a second shows articles about "No End In Sight" for supply chain disruptions in early September, before China had to start working through power supply constraints, global supply chain workers started warning of a "system collapse," and roughly 500,000 containers sat waiting to be unloaded at Southern California ports — a record number seemingly broken every week. And back to chips, we're told just a few days ago the chip shortage is "worse than we thought."   For now, the NYT wrote that GM dealer inventory is down 40% from June to roughly 129,000 vehicles, and down 84% from the days when dealers would cumulatively keep about 800,000 light vehicles in stock. However, GM just announced it would have almost all of its U.S. facilities back online next week, although some would run at partial capacity.