2013 Gmc Sierra 1500 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).

2018 GMC Sierra Denali can help you tow without breaking a sweat

Towing a trailer once meant that only those who possessed certain knowledge would be able to go fishing, tow a race car or pull a camper safely. For me, it took four long years of practice working a job behind the wheel of a jacked-up Ford F-250, hauling tons upon tons of mowing equipment for my local parks department, to become proficient. Just how far things have come since then became evident after a recent trip to Utah with GMC, in which we used the half-ton Sierra Denali to tow a set of Polaris side-by-sides through the state. Modern safety technology and a suite of electronic aids make towing simple enough that anyone with a driver's license and something to haul can do it. This revelation came behind the leather-wrapped and heated steering wheel of GMC's outgoing 2018 Sierra Denali. Sitting in the plush, heated and cooled captain's chair, I could barely feel the 6,000 pounds I was towing behind me. Even GMC's smallest full-size truck engine, a 5.3-liter V8 generating 355 horsepower and 383 lb-ft of torque, felt like overkill for what used to amount to a heavy load. With Utah's pristine landscape, the plush confines of the cabin and the uneventful nature of modern towing, mile after mile just streamed by at highway speeds without incident (or excitement). When we finally reached our destination a few hours later, one of GMC's representatives who had chosen to sit in the rear of the cab asked me what I thought about the drive. I pondered for a few minutes and answered with this: "Modern pickup trucks have removed nearly every skill-based variable once associated with towing. I could drive this truck and trailer confidently with just one finger." Consider the near overabundance of towing-assistance systems in the GMC Sierra Denali that I piloted through Utah. Let's start with the most basic of towing skills — something that's now been relegated to the annals of history: reversing a pickup to meet the trailer's hitch. Once upon a time, this required knowing a truck's dimensions and understanding proximity, as well as having a keen eye, a steady foot for both the gas and the brake and the patience to get it right. Now, though, pickups such as the Sierra Denali offer customers a trailer reverse camera system that helps the driver align truck to hitch with pinpoint accuracy.

15 vehicles most likely to surpass 200,000 miles

Americans drive a lot. Collectively, we put, on average, more than 13,000 miles on our cars each year according to the U.S. Department of Transportation. Because of this, a vehicle's ability to travel long distances without major problems is a huge consideration when it comes time to purchase a new one. It's also worth remembering that keeping an older car on the road instead of trashing it and buying new can be considered an eco-friendly decision. After all, it takes a lot of resources to build a car. iSeeCars.com, a website that aggregates used car listings from all around the country, recently ran through the numbers on millions of vehicles that are currently on the road to determine which last the longest. Alternatively, you could choose to look at this list as vehicles likely to be driven by owners who travel long distances. Either way, we've laid out the top 15 vehicles most likely to hit or even surpass the 200,000-mile mark. It's important to note that while these are the vehicles that have stood the test of time up until today, we can't guarantee future results if you decide to opt for one of these from a current model year. That said, unless we specifically say so in the text below, we've used pictures of current models for illustrative purposes. Now, with all of that out of the way, scroll on down for the top 15 vehicles most likely to crest 200,000 miles. 15: Toyota Sienna 14: Honda Odyssey The 15th spot and 14th spot on the list of the top 15 vehicles most likely to surpass 200,000 miles are both minivans. Spoiler alert: They will be the only two minivans on the list. According to iSeeCars, 3.2% of both of these family haulers crest the 200,000-mile mark, making them the best bets for families looking to put a ton of miles on their machines. 13: Honda Ridgeline 12: GMC Yukon The next spot on the list is occupied by the Honda Ridgeline pickup truck with 3.7% lasting past 200,000 miles. Unlike any of the other midsize trucks it competes with, the Ridgeline is based on a unibody chassis. Opting for this more car-like structure — as opposed to a traditional body-on-frame layout — allows Honda's hauler to ride and drive more like a car. Up next is the GMC Yukon, also with 3.7% past the 200K mark, and the first, but very much not the last, big traditional SUV you'll see on the list. In fact, get ready to see a whole bunch of 'em, including several from GMC parent General Motors.