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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).

The UAW's 'record contract' hinges on pensions, battery plants

DETROIT - After nearly four weeks of disruptive strikes and hard bargaining, the United Auto Workers and the Detroit Three automakers have edged closer to a deal that could offer record-setting wage gains for nearly 150,000 U.S. workers. General Motors, Ford Motor and Chrysler parent Stellantis have all agreed to raise base wages by between 20% and 23% over a four-year deal, according to union and company statements. Ford and Stellantis have agreed to reinstate cost-of-living adjustments, or COLA. The companies have offered to boost pay for temporary workers and give them a faster path to full-time, full-wage status. All three have proposed slashing the time it takes a new hire to get to the top UAW pay rate. The progress in contract talks follows the first-ever simultaneous strike by the UAW against Detroit's Big Three automakers. The union began the strike on Sept. 15 in hopes of forcing a better deal from each major automaker. But coming close to a deal is not the same thing as reaching a deal. Big obstacles remain on at least two major UAW demands: restoring the retirement security provided by pre-2007 defined benefit pension plans, and covering present and future joint- venture electric vehicle battery plants under the union's master contracts with the automakers. On retirement, none of the automakers has agreed to restore pre-2007 defined-benefit pension plans for workers hired after 2007. Doing so could force the automakers to again burden their balance sheets with multibillion-dollar liabilities. GM and the former Chrysler unloaded most of those liabilities in their 2009 bankruptcies. The union and automakers have explored an approach to providing more income security by offering annuities as an investment option in their company-sponsored 401(k) savings plans, people familiar with the discussions said. Stellantis referred to an annuity option as part of a more generous 401(k) proposal on Sept. 22. Annuities or similar instruments could give UAW retirees assurance of fixed, predictable payouts less dependent on stock market ups and downs, experts said. Recent changes in federal law have removed obstacles to including annuities as a feature of corporate 401(k) plans, said Olivia Mitchell, a professor at the University of Pennsylvania Wharton School and an expert on pensions and retirement. "Retirees want a way to be assured they won't run out of money," Mitchell said.

Disabled man realizes dream of driving with converted pickup truck

A man with a devastating illness is mobile once again thanks to a heavily modified pick up truck. He hopes he can help others in his situation gain the freedom of mobility they need to lead a normal life. Chris Sauerbaum has a physical disability resulting from chronic inflammatory polyneuropathy, a form of muscular dystrophy where the sufferer's immune system attacks their nerves. Sauerbaum lost both of his legs and is bound to a wheelchair. After 11 years of trying, he finally has a vehicle that he can drive. "You might as well be driving a Lamborghini," Sauerbaum told the York Dispatch as the driver side door extended to a lift to accommodate Sauerbaum's wheelchair. "Everyone comes up and talks to you. You come out looking like a Transformer." It wasn't easy getting transportation that fit his needs. First he bought a Chrysler PT Cruiser, which wasn't large enough to handle the equipment needed to convert the car for a legless driver. In 2013, Sauerbaum and his wife Heather Sloat appealed to local businesses and friends for donations. They raised $10,000 and were able to put a downpayment on a GMC Sierra. The truck then underwent $91,000 worth of upgrades. It was completely outfitted for Sauerbaum, with a large lift to bring his wheel chair up to the driver's seat and joysticks doing the work of peddles and the steering wheel. New York's Office of Vocational Rehabilitation paid for the conversion. "Think of it as a big remote controlled car. An 8,000 pound R/C car," Sauerbaum told the Dispatch. After a week and a half of learning the controls, Sauerbaum was able to drive with confidence again. He will no long need to rely on his wife to get him two and from work, an 80-mile trip each day. Sauerbaum and Sloat hope to start a nonprofit called Drive for Independence that will assist other wheelchair-bound people with the costs of getting a converted vehicle that suits their needs. "It's just one piece of the puzzle to get people to work," Sloat told the Dispatch. Related Video: Weird Car News GMC Driving Ownership Truck Videos disabled ms