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'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).

GM uses wind power to build SUVs, trucks

This week started with a chill, as the Intergovernmental Panel on Climate Change issued a dire report with scientists warning, "The world we know today is not the world we will see in 50 years," with temperatures rising at their current rates. In the meantime, the trend toward purchasing more SUVs and crossovers continues. Most automakers, though, have set goals toward more sustainable production. That includes General Motors, which, somewhat ironically, plans to use wind power to produce many of its vehicles, including pickups and full-size SUVs. As the Detroit Free Press reports, several wind farms are coming online to support cleaner production as part of a partnership between GM and energy producer CMS Enterprises. At the beginning of October, the 100-megawatt Northwest Ohio Wind Farm began producing energy, supplying GM operations in Ohio and Indiana, where manufactured vehicles include the Chevy Cruze, Chevy Silverado and GMC Sierra. Hilltopper Wind Farm in Illinois will begin producing another 100 megawatts for GM manufacturing in the region. In Texas, where GM builds the Chevrolet Tahoe, Chevrolet Suburban, GMC Yukon, GMC Yukon XL and Cadillac Escalade, the automaker is getting 50 megawatts from Cactus Flats Wind Farm beginning October 9. Using wind power isn't just about being green, but also for the sake of price stability. As Rob Threlkeld, GM's global manager of renewable energy told the Free Press, "You don't get the price spikes this way, like you do with fuel, and it reduces the environment footprint of the vehicle you're driving." Threlkeld said that renewable energy has already meant "millions of dollars in savings" for GM. GM plans to power all of its global operations with renewable energy by 2050. This week, the automaker was ranked 76 on the EPA's "National Top 100 List" of green manufacturers. It was the only automotive company listed. Related Video: News Source: Detroit Free Press, GM, EPAImage Credit: GM Green Plants/Manufacturing Chevrolet GM GMC Truck SUV wind power sustainability

Barrett-Jackson is auctioning the first 2022 GMC Hummer EV for charity

Unveiled in late 2020, the GMC Hummer EV Edition 1 was so popular that enthusiasts scooped up the entire production run in merely 10 minutes. If you missed your chance to reserve one, you're in luck if your pockets are deep enough. Auction house Barrett-Jackson will sell the first example off the production line for a great cause. VIN 001 will be up for grabs during a sale that starts in Scottsdale, Arizona, on March 20. Hummer production hasn't started yet, so we don't know precisely what the truck will look like and it won't physically cross the auction block. Barrett-Jackson did not provide a pre-auction estimate, but it pointed out that 100% of the proceeds from the sale will be donated to a charity called Stephen Siller Tunnel to Towers Foundation that helps wounded first responders and veterans across America. Charity auctions normally bring big dollars, so a sold-out flagship variant of a highly-anticipated model whose base price is pegged at $112,595 could sell for a seven-digit sum. Edition 1 deliveries will start in the fall of 2021, meaning the winning bidder will need to wait a few months before exploring the great outdoors in the 1,000-horsepower electric truck. More affordable trim levels are in the pipeline, but they're not exactly around the corner. GMC will expand the range by launching three trim levels called EV2, EV2X, and EV3X, respectively. Equipped with three electric motors, the EV3X will land in the fall of 2022 with a $99,995 base price. Pricing for the two-motor EV2X due out in the spring of 2023 starts at $89,995, while the entry-level EV2 will arrive a year later priced at $79,995. None of these figures include available incentives. Looking ahead, the Hummer EV will spawn an SUV that will make its official debut online in February 2021. We don't know when it will reach showrooms yet, but we're not expecting to see it until 2022 at the earliest.  Barrett-Jackson's Scottsdale sale includes sports cars from every era, ranging from a custom 1928 Ford Model A to a 2021 Honda Civic Type R. Ram's first 1500 TRX is on the roster, too, and it will also be sold for charity. Another stand-out car from the catalog is the first production version of the 2020 Chevrolet Corvette Convertible. Finished in black with a black and red leather interior, it's powered by a mid-mounted, 6.2-liter V8 engine rated at 495 horsepower, and it's equipped with the 3LT and Z51 packages plus the Performance Data Recorder, among other features.