2014 Gmc Yukon Denali on 2040-cars

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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).

Basic configurator for 2021 Chevy Colorado and GMC Canyon slips online

TFLnow discovered basic configurators for the 2021 Chevrolet Colorado and GMC Canyon are already online at GM's site for employee discounts. These aren't the fully-featured whiz-bang configurators that will show on the retail websites soon, but they include a bunch of the relevant info a shopper would be looking for. After trim changes detailed earlier this year, the 2021 Colorado offers the most choice, even with the two-door base model gone. Cutting the entry-level Colorado also means the entry-level price has gone up by $3,900; the 2020 Colorado could be had for $22,495, but the 2021 model starts at $26,395 after the $1,195 destination charge. That gets you the extended cab with a standard bed in two-wheel drive. The 2WD crew cab with a short bed starts at $28,295, and the 2WD crew cab with a standard bed starts at $30,595. At the top end, the ZR2 model runs $44,395, which is $200 more than the 2020 version. The color palette isn't complete, but the options page shows a number of choices for packages. The Redline Special Edition Package goes up $10 to $2,690, the Tonneau and Step Package increase $100 to $1,195, a new Chrome Package puts shiny stuff in places like the door handles and steps for $300, while the Black Bowtie Emblem Package drops $80 to $140. The one-inch front leveling kit, which was thought to cost $150 based on early order information GM Authority had seen, is here listed for $450 and available on the Colorado but not the Canyon.  The Canyon makes matters a tad simpler by having many options locked in depending on which one starts with — 2WD Elevation Standard starting at $27,595, 2WD Elevation for $31,195, 4WD AT4 with a cloth interior for $39,395 or AT4 with leather for $41,195, the least expensive Denali starting at $42,095 for a crew cab short box with 2WD. The Elevation includes items like the Convenience Package that are options on the base model, and also offers a $1,400 High Elevation Package conferring heated and power black leather seats, plus a heated steering wheel, that can't be optioned on the Elevation Standard. The pinnacle is the crew cab with a standard bed in Denali 4WD trim for $45,895. Colors and many of the final options and accessories, such as the AT4 Off-Road Performance Edition Package we've heard about, are also missing here, but there's heaps to play around with to get an idea of what you'll be in for if you're considering a 2021 Canyon. Related Video:    

GM tells owners not to use SUV wipers due to fire risk

General Motors is recalling 31,685 examples of the 2016 Buick Enclave, Chevrolet Traverse, and GMC Acadia because a short circuit in the windshield wiper motor can potentially lead to a fire. Due to the danger, the company is asking owners not to use the wipers until the problem is fixed, according to The Detroit Free Press citing the Associated Press. A manufacturing defect in the wiper motor cover means that the electrical terminals can come into contact and cause a short. The part could "melt, smoke, or catch fire," according to a statement from GM. The company will get them fixed immediately, and dealers will replace the cover. If there's bad weather at the time the owner specifies to get the recall work completed, the automaker will come pick up the crossovers. Depending on parts availability, the automaker will supply a rental car for customers, as well. The issue was discovered at the factory. According to the company's statement, only 6,405 actually made it to customers, and they were notified immediately by overnight letter. The rest were in dealer stock. The affected crossovers carry build dates between August 18, 2015 and September 24, 2015. Of those, there are 29,295 in the US and 1,073 in Canada. GM Statement: General Motors has told the National Highway Traffic Safety Administration that it will recall approximately 29,295 2016 model year Chevrolet Traverse, Buick Enclave and GMC Acadia SUVs in the U.S. because the front windshield wiper motor may overheat when in use because of a manufacturing defect. In some cases, the front windshield wiper motor cover may melt, smoke or catch fire. The approximately 6,405 customers who have taken delivery of these vehicles were notified by overnight letter and are urged to contact a GM dealer as soon as possible to arrange a service appointment. These customers should not use the front windshield wipers until they have been repaired. If weather conditions prevent driving the vehicle without using the windshield wipers, GM will arrange to pick up the vehicle for servicing. If repair parts are unavailable, GM will provide a rental car at no cost until parts become available. The total population, including Canada, Mexico and exports, is approximately 31,685. About 25,280 of these vehicles are in dealer stock and will not be sold until repairs are made.