1990 Chevrolet Silverado 1500 None on 2040-cars

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Cadillac XT4 crossover to be built in Kansas City

Cadillac's upcoming XT4, a crossover we've previously known as the XT3 in a long series of spy shots of heavily camouflaged mules, will be built at General Motors' assembly plant in Kansas City on the same platform as the Chevrolet Malibu, Bloomberg reports, citing people familiar with the plan. That will give Cadillac another entry in the red-hot luxury crossover segment and, GM hopes, help to reverse a sales slump in the U.S. It'll also breath life into the Kansas City plant that makes the slow-selling Malibu, where GM cut a third shift last year, by sharing the assembly line between the crossover and sedan and defraying costs for each vehicle. The XT4 was known most recently as the XT3, with styling cues based on the Escala concept sedan from 2016. It's slightly smaller than the XT5, Cadillac's top-selling vehicle, and will also augment the full-size Escalade in Cadillac's stable of SUVs when it makes its expected debut later this year. Cadillac last week reported its second-highest-ever sales mark with 356,467 vehicles, an increase of 15.5 percent over 2016. But that mark papers over an 8 percent sales decline in the U.S. to 156,440 vehicles. The luxury brand is on a hot streak in China, where sales jumped 50.8 percent last year to 175,489 units.Related Video: Image Credit: Brian Williams Plants/Manufacturing Cadillac Chevrolet GM Crossover sales cadillac xt5 cadillac xt4 cadillac xt3

'Killing a Duramax' Gale Banks YouTube series methodically tunes a diesel to death

Learning or perfecting a skill by watching YouTube videos is known as attending YouTube University. GM Authority picked up on one of the video site's more fascinating courses, hosted by Gale Banks; in a fair world, he should be referred to as Professor Banks when it comes to diesel engines and truck tuning. A few months after GM introduced the updated L5P 6.6-liter Duramax diesel V8 in the 2020 Chevrolet Silverado HD and GMC Sierra HD that ships with 454 horsepower and 910 pound-feet of torque, Banks decided he wanted to methodically tune the engine to death. The purpose of the resulting series, called "Killing a Duramax," is to push more power out of the engine in order to discover which parts break and when — or, as Banks puts it, force-feed the Duramax "until the crank hits the street and the heads hit the hood." With that knowledge, Banks can figure out all the weak points on his way to building what he calls a "Superturbo," that being a supercharged, twin-turbo race engine with more than 1,000 hp. What makes the series fascinating is Banks' knowledge, paired with the company's comprehensive iDash engine monitoring system that keeps tabs on a glut of parameters every step of the way. So for instance, you get Banks explaining the differences between inches of mercury and barometric pressure, how those are different from the water content of the air measured in grains, then showing those readouts on the iDash, then explaining in detail how they affect the air density in the Duramax system. The stock Borg-Warner variable turbo gets a lot of airtime — Banks accuses it of being "out to lunch" because he feels it's the weakest link on the engine. That turns into a turbo teardown and a deep explanation of performance pitfalls, such as when air pressure on the turbine begins to diverge from the boost pressure coming from the compressor. Banks says he can keep close tabs on where power's coming from, because the iDash monitors the horsepower contribution provided by the ambient air, the turbo, and the intercooler separately. The major changes so far are a stouter Precision 7675 turbo and TurboSmart wastegate (episode 5), a twin intake (episode 6), a custom liquid-cooled intercooler from a marine engine, a new GM oil cooler and synthetic oil (episode 10), and new injectors (episode 11).

Before Chevrolet's Redline, there was the Saturn Red Line

While Chevy rolls out Redline special editions across more of the lineup at this year's Chicago Auto Show, we've been eating some 'member berries and started thinking about the last time GM used the term. Back in 2004, Saturn rolled out Red Line (two words) editions of the Ion and Vue. The lineup was joined by the Sky Red Line in 2007, and the second-generation Vue kept the tradition going in 2008. This was in the heady days of the mid-2000s, before the financial crisis and GM's bankruptcy reorganization that saw the end of Saturn. The press release headline for the 2008 Sky is now cringe-worthy: "Hot-selling Sky helps drive Saturn product renaissance." Performance lineups were the hot new thing, as automakers attempted to cash in on the tuner trend popularized by The Fast and the Furious. Chevy had SS models, Pontiac had GXP, and Saturn had Red Line. Across the Detroit Metro area, Dodge had a slew of SRT models, and Ford's Special Vehicle Team brought us the SVT Lightning pickup, the SVT Focus, and a smattering of hopped-up Mustangs. The performance cred of Red Line models varied from car to car. The Ion Red Line shared the same engine as the original Chevy Cobalt SS, a 205-horsepower supercharged 2.0-liter four-cylinder, 65 hp more than stock. Car and Driver tested one with a 0-to-60-mph time of 6.1 seconds and said the Ion "tears down the wall that has separated enthusiasts from the Saturn brand for so long." The Vue Red Line, meanwhile, came with the same optional Honda-sourced 3.5-liter V6 you could get in the regular Vue, and added a stiffer, lower suspension, bigger wheels with more aggressive rubber, and recalibrated steering assist. When the Vue was redesigned for the 2008 model year, the Vue Red Line was a similar proposition. The engine was now from GM, and up 7 horsepower to 257, but you could get it in both Red Line and XE trim. Aside from the tire and suspension upgrades, Red Line models now came with a unique front fascia and rear exhaust cutouts. The most exciting Red Line, of course, was the high-performance version of the Sky roadster, which shared underpinnings with its Pontiac Solstice twin. This model came with GM's hot 2.0-liter Ecotec Turbo, good for 260 horsepower. The extra power was crucial in covering up the Sky's unfortunate manual gearbox ratios, which left the non-turbo model aching for torque in lower gears. As we all know, Saturn was taken by the grim reaper in 2009 after an attempt to sell the brand to the Penske Group.