2008 Gmc Yukon Xl 1500 Denali Sport Utility 4-door 6.2l on 2040-cars

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2021 GMC Canyon Denali shows its new grille

GMC showed us its new 2021 Canyon AT4 pickup at the beginning of the year. We got a few details on the "more upmarket" top-tier Denali trim coming next year, but we've been missing good photos of the article until now. The more upmarket part rings true when it comes to the front fascia of the the 2021 Canyon Denali, achieved at the cost of a busyness compared to the 2020 model. That's because designers bent the set-square lines on the current trim into angles and flared edges from top to bottom, adding more prominent textures along the way. The comparison shot in the gallery above reveals all,  the "exclusive heroic grille design" — really, that's GM's name for it — the heart of "a more distinctive and sophisticated design that has become synonymous with Denali," according to Holt Ware, the brand's head of exterior design. Inside, the luxury trim offers a new and exclusive open pore ash wood for accents, a Cocoa/Dark interior treatment, heated and cooled front seats, aluminum trim, and embroidered headrests. There's wholesale change coming for the entire Canyon lineup, but we need to wait for GM to officially announce the 2021 pickup to codify everything properly. The trim walk has changed, from Canyon, SLE, All Terrain, SLT, and Denali to Elevation Standard, Elevation, AT4, and Denali, and we're still wondering what this might to do the $650 Elevation Edition cosmetic package. The bargain basement models have also gone away, putting the new MSRP floor $4,200 above the 2020 model to go along with other price increases dotted throughout the lineup. GM Authority says Canyon production won't be delayed by the coronavirus lockdown, so production should begin n Wentzville, Missouri, in a few months. Related Video:    

Chevy Silverado, GMC Sierra 4.3-liter EcoTec3 V6 nets 18 mpg city, 24 highway

There is no doubting that fuel economy has become an important factor in the highly competitive fullsize truck market, with the Ford F-150 EcoBoost V6 and Pentastar V6-powered Ram 1500 setting quite a precedent in recent years. Now it's General Motors' turn. The General has just announced that the new base V6 used in the 2014 Chevrolet Silverado and GMC Sierra 1500 models will return an EPA-estimated 18 mpg city and 24 mpg highway in two-wheel drive trim, regardless of cab configuration.
While these figures don't go so far as to earn GM any "best-in-class" fuel economy claims (thanks to the 25-mpg Ram 1500 HFE), this new 4.3L EcoTec3 V6 does edge the F-150 and Toyota Tundra while boasting best-in-class numbers for torque, payload and towing capacity among six-cylinder rivals. This all-new engine produces 285 horsepower and 305 pound-feet of torque, and it gives the 2014 Silverado and Sierra the highest towing rating among standard V6 models with a 7,200-pound towing capacity - besting the Ram by 700 pounds, the base F-150 by 1,100 pounds and coming within 200 pounds of the V8-powered Nissan Titan. Scroll down for the official press releases from Chevrolet and GMC.

'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).