2001 Gmc Sierra 2500 Hd Sle Standard Cab Pickup 2-door 8.1l Snowplow Plow 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).

Coronavirus shakes up America's truck market: GM outselling Ford and Ram

FCA, Ford and General Motors joined the rest of the U.S. auto industry in taking heavy volume hits due to coronavirus-related shortages of both cars and customers. The saying goes that a rising tide lifts all boats; it stands to reason, then, that a falling one would have the opposite effect.  However, as we learned Thursday, the automotive market can behave in unpredictable ways. While the F-Series remained the best-selling nameplate in Q1, GM's full-size trucks are now outselling Ford's again for the first time in years, and with this upward thrust from the General, FCA's Ram was unceremoniously booted out of a hard-earned second place.  While late-March sales declines hit just about every major automaker in one way or another, the model-by-model results weren't nearly so uniform. And because the market tends to be a zero-sum game, for every winner, there generally has to be a loser.  In this case, that winner was GM, and its rise had to come at the expense of another automaker, in this case, Ford. F-Series sales dropped 13.1 percent in the first quarter of 2020, while sales of GM's full-sized Silverado and Sierra surged nearly 28% in the same period. FCA's Ram lineup managed a steady-as-she-goes 7% increase. All-in, GM finished the quarter with 197,743 full-size trucks sold to Ford's 186,562. Here's the full breakdown: Ford F-Series: 186,562  Chevrolet Silverado*: 144,734 Ram P/U: 128,805 GMC Sierra: 53,009 *includes 1,036 Medium Duty sales Things are a but murkier in the midsize segment, where the Chevy Colorado slipped 36% to just 21,430 units sold — just a few hundred better than the slow-selling Ford Ranger's Q1 numbers. The GMC Canyon experienced an almost identical slide, finishing the quarter with just 4,483 units sold. For perspective, Jeep sold more than 15,000 Gladiators and Toyota's midsize Tacoma slipped less than 8%, finishing the quarter with nearly 54,000 sales.  We suspect this discrepancy in full- and mid-size truck sales comes from shifting incentives. Ford, GM and FCA would like to keep selling bigger trucks because there's far more profit margin built into their list prices. Even with tens of thousands of dollars in manufacturer money on the hood, big trucks still make money.  Since these automakers report quarterly, we won't get another good look at these numbers until July, but if you thought that 2019 represented the new normal for U.S. auto sales, well, think again.

2022 GMC Sierra Preview | GM's 'premium truck' is actually now premium

Pros: Quiet and torque-rich Duramax diesel; big touchscreen on most trims; great trailering tech; versatile MultiPro tailgate Cons: Worse ride than most rivals; AT4X priced like a Raptor but doesn't go like a Raptor The 2022 GMC Sierra 1500 is GM’s upmarket half-ton pickup, with a supposed emphasis placed on interior quality and materials rather than bare-bones durability. Supposedly, at least. In reality, the most recent generation hardly lived up to that promise as it showed few upgrades over its Chevy Silverado sibling, which itself possessed a ho-hum, not-really-trying interior clearly overshadowed by Ram and Ford that at least match it in most other respects. It was particularly noticeable when comparing top trim levels. GMC's supposedly premium entry, and especially the Denali, just didn't cut it. That changes in a huge way for 2022. First, thereÂ’s not just one new and massively improved interior, there are two. The SLE, Elevation and SLT once again share their interior design with the Silverado, but that includes a more visually appealing design, better materials, smarter storage and a significant technology upgrade thanks to the standard 13.4-inch touchscreen running the user-friendly Android Automotive OS. The AT4 and Denali trim levels, including the new AT4X and Denali Ultimate, step things up even further with a different dash design and upgraded interior materials. The Ultimate definitely lives up to its name with a characterful and, yes, premium vibe that stands tall against the best of Ford and Ram. Other welcome updates include the option of Super Cruise on top trim levels and a massively more powerful base turbo four-cylinder engine (it produces more torque than the 5.3-liter V8!). Effectively, the 2022 GMC Sierra is now the truck it shouldÂ’ve been since the beginning of this current generation and definitely worth a look – especially if youÂ’re in the market for a premium truck. Now, a bit of housekeeping. While the massively updated model shown here is officially the 2022 GMC Sierra, thereÂ’s a chance you could come across something called the "2022 Sierra Limited.” That was just last year's truck with the 2022 model year stapled to it. There are many reasons for this, but suffice it to say, if you see a Â’22 Sierra Denali with the ugly robot-face dashboard (below right), youÂ’re looking at a Limited. Also, the availability of Super Cruise and other features have been hampered by supply shortages.