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GM recalls 2022 Cadillac XT5, XT6 and GMC Acadia for suspension issue

General Motors is recalling a relatively small number of 2022 Cadillac and GMC crossovers to address the potential for missing or loose rear suspension hardware that is being blamed on a lapse in quality control at the company's Spring Hill facility. The campaign covers 223 examples of the Cadillac XT5, 159 examples of the Cadillac XT6 and 354 examples of the GMC Acadia. "General Motors has decided that a defect, which relates to motor vehicle safety, exists in certain 2022 model year Cadillac XT5, XT6, and GMC Acadia vehicles," GM said in its defect report. "A fastener in the left-rear suspension toe link in some of these vehicles may not have been fully tightened during suspension assembly. After an assembly process was moved to a new area, error proofing equipment was not initially set up properly, which allowed a window where the operator might miss tightening certain fasteners without the failure being flagged." The issue was discovered by a quality engineer at the Spring Hill facility in March of this year, at which point GM conducted an audit to determine which and how many vehicles may have left the factory with improperly torqued or missing fasteners, narrowing down the recall population to the above 736 vehicles. No incidents associated with the defect have been reported in customer vehicles.  Related video: Recalls Buick Cadillac GM Ownership Safety

GM patent reveals new two-stage turbocharger

Modern turbochargers may be some of the best ever made, but performance is something that engineers are always trying to improve. According to GM Inside News, General Motors (GM) is hoping to alleviate some of the negative aspects of a two-stage turbocharger setup with a newly-patented design. The patent, that was filed on May 19, 2016, reveals a clever bypass system that allows the engine, a four-cylinder unit, to optimize both the low-pressure and high-pressure inlets for its respective functions. According to the filing, a conventional two-stage turbocharger setup is engineered to allow both turbines to operate simultaneously at low and mid engine speeds. At high engine speeds, only the low-pressure turbine works. The setup can't isolate either the low or high pressure side, which can impair low-end performance. GM's new two-stage turbocharger setup looks to eliminate this by linking the high-pressure turbo to the exhaust manifold through the high-pressure inlet duct. The low-pressure turbo is attached to the high-pressure turbo by a low-pressure inlet duct, which is linked to a connecting channel. A single actuator that is housed in the exhaust manifold creates a bypass that can opens the high-pressure inlet or close the connecting channel. Depending on what the engine load and speed is, the ECU guides the actuator—a single rotating spindle with discs corresponding to flanges on the high and low pressure sides—to isolate one of the two turbos. Isolating the turbos allow the respective inlets to be engineered for the best possible fluid dynamic performance. The setup should increase performance and decrease lag. There's no word on what car this setup will make an appearance on, but it will most likely be used in premium vehicles before trickling down to the rest of GM's vehicles. Related Video: News Source: GM Inside News, AutoGuide via GM Authority Cadillac Chevrolet GM Technology Sedan turbo patent engine turbocharging

Don Draper's 1965 Cadillac Coupe de Ville up for auction

Few have ever nor ever will embody the sheer confidence and style of Don Draper, the main character on the hit AMC drama Mad Men. But if you can't quite match his style, at least you can drive his car. Now that the series has now concluded its eight-year run, the studio behind it is selling off a whole mess of artifacts from the show through ScreenBid, a specialist Hollywood memorabilia auctioneer. There's a good 1,300 lots up for grabs, from props to costumes. But the lot that's caught our attention is this 1965 Cadillac Coupe de Ville. Don picked this car up in the fifth season and drove it until the penultimate episode. These are the wheels he (spoiler alert!) drove across the country, got repaired in Oklahoma, and ultimately gave to a kid working at the motel before making his way by bus to the Bonneville Salt Flats in the final episode. At the time of writing, bidding had reached $25,000 with four days still to go. Cadillac first used the de Ville as a trim level on the Series 62 before spinning it off into its own model line. 1965 was the first year of the third-generation de Ville, stretching a massive 224 inches (over 18 and a half feet!) long. Powering over 4,600 pounds of personal American luxury was an equally massive 7.0-liter V8 that drove 340 horsepower through a three-speed automatic transmission. The name wasn't retired until 2005 when the final DeVille (as it was styled by then) was replaced by the DTS, which itself was shorthand for DeVille Touring Sedan. Cadillac produced the last DTS in 2011, finally putting to rest a name that had, in one form or another, been used since 1949. Few cars had the kind of presence that the third-gen Coupe de Ville did, though, and Draper knew it. Or at least the show's producers did.