2013 Gmc Sierra 2500hd Denali 4x4 W/ Z71 Package 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).

GM opens military discount to 21M veterans and their spouses

May marks the start of National Military Appreciation Month, and General Motors is getting into the spirit by expanding its military discount program to, well, just about everyone. That includes a total of 21 million military veterans and their spouses, along with the current slate of active duty, reserve, and National Guard members. The discount can slash thousands of dollars off the price of a new Buick, Chevrolet, or GMC vehicles, with Automotive News listing an $1,100 discount on the top gas-powered version of the Malibu, the Premiere. Those that want a bit more spice can get $1,700 off the price of a last-generation 2015 Camaro SS, while truck buyers will enjoy $3,000 off the Chevy Silverado All Star. That's just a start, though, since the military discount can be paired with other GM incentives. The discount doesn't apply to everything, though. Some are understandable – none of Cadillac's vehicles are included in the deal, nor is the Corvette Z06. You'll also be unable to apply the discount to a range of base-level trims, like the Chevy Cruze or Equinox L, the base Colorado, or the entry level GMC Acadia, Canyon, and Terrain. A full list is available at GM's dedicated military discount website. GM's expanded discount plan runs from today through May 31. News Source: General MotorsImage Credit: General Motors Buick Chevrolet GM GMC Car Buying Car Dealers Military

2023 GMC Canyon revealed with new ZR2-based AT4X trim

Following up on the reveal of its twin, the Chevy Colorado, the 2023 GMC Canyon has made its appearance. Naturally, it shares much with the Chevy pickup, but GMC has gone to greater lengths to differentiate the truck. It comes standard with the high-output engine, all versions feature the wide-track suspension setup, and in addition to the now more luxurious Denali, there's a ZR2-based AT4X trim. As with the new Colorado, the Canyon gets an overhaul of the design. It's down to one bed and cab configuration (short-bed, crew cab), and it features a longer wheelbase with the front axle pushed forward. The Canyon does get a variety of unique design features, though. It has its own front fascia with a tall, rectangular grille. LED lighting is standard on all Canyon models all the way around. That includes the unique fender lights like those found on the Sierra HD. All Canyons also feature the wide-track off-road suspension like the Colorado Z71 and Trail Boss. There are no narrow-track, narrow-body versions, even on the base two-wheel-drive Elevation. That suspension also means all Canyons have a roughly two-inch lift over base Chevy Colorados. The GMCs also get standard 32-inch tires, and they don't feature a front air dam in order to provide better approach angles. The bed, while only available in one trim, is available with a unique storage bin in the tailgate. On the topic of suspension specs, the Elevation and AT4 trim levels have 9.6 inches of ground clearance. The Denali increases that to 10.5 inches, and the AT4X features 10.6 inches. It also picks up the Multimatic spool-valve shocks from the ZR2. But we'll talk more about what comes on the AT4X in a bit. Under the hood of the Canyon is just one engine. It gets the highest-output version of the 2.7-liter turbocharged four-cylinder. The engine makes 310 horsepower and 430 pound-feet of torque. The only transmission is an eight-speed automatic. Two-wheel drive comes standard on Elevation, and other trims come standard with four-wheel drive. The inside of the Canyon is very similar to the Colorado, but it has some unique cues. It has air vents that are more integrated into the squared-off dashboard design, rather than the Chevy's round vents. It has a differently shaped dash pad and trim surrounds, too. The really big differences come on the Denali and AT4X trims, though. The Denali features real wood trim with laser etchings. It also gets lots of real leather and fancy stitching.