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2019 Cadillac CT6-V preorders start at $89,785

Cadillac's top-of-range sedan will start at less than $90,000, just barely. At the North American International Auto Show in Detroit, Cadillac announced it is opening preorders for the 2019 CT6-V, which will start at $89,785. Keeping things exclusive, Cadillac has 275 preorder slots available to the U.S. market for the CT6-V. It will briefly join the ATS-V and the CTS-V to give Caddy a trio of powerful sedans before the ATS-V and CTS-V bow out after the 2019 model year to make way for new models. Cadillac offers less powerful V-Sport variants, as well. The CT6-V, formerly the CT6 V-Sport, uses a Cadillac-exclusive powertrain. The twin-turbo 4.2-liter V8 makes a claimed 550 horsepower and 627 lb-ft of torque. This engine is hand-built and nicknamed the "Blackwing." It is linked to a 10-speed automatic transmission, which puts power to the ground through Cadillac's all-wheel-drive system. As an added luxury perk to buying the CT6-V, Cadillac will include 2 days at the V-Performance Academy at Spring Mountain. The trip is essentially all expenses paid, with tuition and luxury accommodation part of the package. Cadillac estimates the first CT6-V models to arrive in mid-2019. Now, it was widely reported that the Detroit-Hamtramck production facility that builds the CT6 would be among those closed by GM. Cadillac President Steve Carlisle told Automotive News, however, that the company is exploring production alternatives to keep the flagship luxury sedan for sale in the United States. Apparently, it was never actually on the chopping block, and instead, officials at the time of the plant closure announcement failed to mention that CT6 production would be moved rather than cancelled. Where that new facility would be has yet to be announced, but Carlisle told Automotive News that moving production to China, where the CT6 Plug-In Hybrid is built, is "the least-preferred option." Related Video:

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

GM recalls 55,000 trucks, SUVs for separating axles, fuel pump failures

General Motors issued four separate recalls covering eight of its truck and SUV models for issues related to fuel pump and half-shaft failure. In total, the four campaigns include more than 55,000 vehicles spread out over three brands and six model years, but they've sorted themselves neatly into two categories. Let's dive in.  Axle separation Four models are being recalled for potential axle separation: The 2023 Cadillac XT5, 2023 GMC Acadia, 2023 Chevy Blazer and 2023 Chevy Traverse. The number of units affected is incredibly small (10 units each times two recalls, for a total potential population of just 20 cars). In each case, a small number left the factory with half-shaft assemblies that may have been missing the retention rings that keep them in place, possibly allowing the axles to separate or eject from the transmission. In the case of the XT5 and Acadia, it's the right-side axle assembly; Chevy dealers, however, will have to check the left side.  Fuel pump failure Again, we have multiple vehicles being recalled for similar issues, but in this case they're a bit more distinct. The first of these recalls covers the 2021-2022 Chevy Equinox and 2022 GMC Terrain. GM says a supplier-initiated change may have led to fuel pumps shipping with inadequate clearances to allow for the prescribed flow of fuel, meaning the pump could starve the engine. Customers experiencing the issue may see a check engine light and experience engine hesitation. In some cases, the cars may not start at all. Chevy and GMC will replace the units in question with correctly specified pumps.  The second recall covers a fairly specific cross-section of GM's HD truck lines. 2017-2019 Silverado and Sierra HD trucks sold with the diesel engine and a dual-tank configuration may have shipped with a rear fuel pump that is susceptible to fouling by debris, preventing fuel from properly transferring to the front tank, or, in extreme cases, resulting in a collapse of the rear tank. This issue can lead to inaccurate/erratic fuel tank readings, engine hesitation, a check-engine light or failure to start.  In both cases, GM will inspect and replace faulty units free of charge for customers. Expect notifications to be delivered by March.  Related video: Recalls Cadillac Chevrolet GMC Ownership Safety Truck SUV