2014 Gmc Sierra 1500 Base 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).

Watch this GMC Sierra pickup slide down a boat launch into a lake

Turns out, the GMC Sierra doesn’t float. In case you were wondering about experimenting, some folks in Illinois already have that covered. You can see the video from WICS ABC NewsChannel 20 above. The only reason this mishap was caught on video is because the news station was running a short standup segment at the boat launch. The truck slowly slips out of view, and eventually, the reporter turns around to see that the real story is taking place behind him. The white pickup and owners were in the process of launching a boat into Lake Springfield when the truck began to slowly make its way too far back with nobody around to save it. Local news and the police reported that nobody was inside the pickup when it submerged itself into the lake. Plus, there were no injuries to speak of. It appears that this is just a good ol' fashioned case of improper boat launching. One minute, thereÂ’s a shiny, new Sierra pickup. Just 30-40 seconds later, and the truck is fully underwater. The camera operator trains in on the folks attempting to launch the boat (that did successfully make it into the water), and predictably, they donÂ’t look pleased. Be safe out there, folks. And if youÂ’re going to drive your vehicle into the water, make sure itÂ’s an Amphicar. Related video: This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings.

Editors' Picks February 2022 | GMC Yukon, CT4-V Blackwing and Lexus NX 450h+

The shortest month of the year spawned a few Editors' Picks choices, and they come from a variety of categories amongst the car world. One comes with a particular caveat, the Lexus NX. Specifically, the new NX that gets our nod is the 450h plug-in hybrid model. We can heartily recommend an NX in this guise for its superb electrified powertrain, but the other versions fail to stir us in the same way. Beyond this, it's some of the latest from GM cleaning up, and they sure are some good ones. In case you missed our previous Editors' Picks posts, here’s a quick refresher on whatÂ’s going on here. We rate all the new cars we drive with a 1-10 score. Cars that are exemplary in their respective segments get EditorsÂ’ Pick status. Those are the ones weÂ’d recommend to our friends, family and anybody whoÂ’s curious and asks the question. The list that youÂ’ll find below consists of every car we rated in January that earned an EditorsÂ’ Pick. 2022 GMC Yukon Quick take: The Yukon is a big, comfortable and versatile SUV that has a little something for everybody, so long as you can stomach the fuel economy. It's an excellent middle ground between the Tahoe and Escalade. Score: 8.0 What it competes with: Ford Expedition, Jeep Wagoneer and Grand Wagoneer, Lincoln Navigator, Chevrolet Tahoe, Cadillac Escalade Pros: Tons of space, comfy ride, great trim variety, powerful engine options Cons: V8 Fuel economy, infotainment can be laggy, unexciting base interiors From the editors Road Test Editor, Zac Palmer — "GM's full-size SUVs are fantastic this time around, especially if you opt for the magnetic shocks and air suspension. The availability of a diesel engine that vastly improves fuel economy is huge, and the Denali trim is more special than ever with its unique interior design. I personally prefer the Yukon's styling over the Tahoe's, too." In-depth analysis: 2022 GMC Yukon Review | AT4 and Denali make the strongest case   2022 Cadillac CT4-V Blackwing Quick take: Cadillac is at the top of the mountain with its performance sedans, and the CT4-V Blackwing is no exception. One drive in this magnificent creation will have any enthusiast convinced that it's a top-tier sport sedan.