2006 Gmc Yukon Xl 1500 Denali Sport Utility 4-door 6.0l on 2040-cars

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GM diesel pickups first to undergo extra EPA, CARB testing

The effects of Volkswagen's long-running diesel emissions evasion are starting to spill over to other automakers, but General Motors is taking things in stride. The 2.8-liter, four-cylinder Duramax in the 2016 Chevrolet Colorado and GMC Canyon is the first engine to get extra scrutiny by the Environmental Protection Agency and the California Air Resources Board, Automotive News reports. Rather than just the usual in-lab test, it's also being checked on the road. However, the extra evaluation shouldn't have any impact on when the trucks with his mill hit dealers later this fall. "We're in our final stages of the EPA certification, and our launch is on track," Chevy spokesperson Otie McKinley tells Autoblog. The four-cylinder diesel in the trucks makes 181 horsepower and 369 pound-feet of torque, and the automaker is touting low NOx production. In the announcement for the Colorado's specs, the company calls it "the cleanest diesel truck engine ever produced by General Motors." The tech includes exhaust gas recirculation to lower combustion temperatures and improve emissions. There's also a urea tank like on the bigger diesels for full-size trucks, and it gets refilled in time with oil changes. An indication on the instrument panel lets drivers know when that's needed, too. Even with the more demanding testing, the company doesn't seem too worried about the four-cylinder passing. "Part of our development process is on-road and off-road [laboratory] testing," Scott Yackley, Chevy Trucks assistant chief engineer, said to Automotive News. In the wake of the VW scandal, the EPA has pledged more rigorous testing. Before, on-road emissions evaluations were largely limited to heavy-duty vehicles, but the agency has decided to apply the checks more often to other models. There's also now greater cooperation with Canadian authorities.

2021 GMC Canyon AT4 will offer an Off-Road Performance Edition Package

In March 2018, GMC announced the 2019 Sierra 1500 AT4, the alphanumeric finale denoting heightened ridge height and off-road capability. In December of that year, GMC took the AT4 further, creating an Off-Road Performance Package that boosted horsepower and torque, and re-soled the 18-inch machined rims in Goodyear Wrangler DuraTrac Mud Terrains. History will repeat itself in 2020, one truck size category down. GMC unveiled the Canyon AT4 (pictured) in Vail, Colorado, earlier this month, and now GM Authority reports that a Canyon AT4 Off-Road Performance Edition Package is on the way later this year.  The Canyon AT4, which replaces the Canyon All Terrain, upgrades the standard truck with all the erstwhile All Terrain kit like tuned suspension, Advanced Hill Descent Control, transfer case skid plate, automatic locking rear differential, and 31-inch Goodyear Wrangler DuraTrac tires on 17-inch aluminum wheels. Design tweaks include the new, bolder front fascia and red recovery hooks. The Canyon AT4 Off-Road Performance Package goes a different route than on the Sierra, improving ruggedness instead of engine output. GMA says the suite includes front and middle performance skid plates, rocker protection, a spray-on bedliner, performance exhaust tip, and 17-inch gloss black aluminum wheels in favor of the Dark Argent Metallic units. A front leveling kit removes the factory rake. This variant will wear a black AT4 badge as opposed to the regular red and chrome AT4 denominator. Inside, we'll guess the AT4's Kalahari stitching and embroidered headrests stay in the game. They'll be joined by all-weather mats. Since GMC hasn't announced the upfit, we don't have pictures or pricing. Tallying up what individual options we could on the 2020 Canyon All Terrain came to $1,970, but that doesn't reflect pricing for next year's new AT4 trim, nor does it include components like the front leveling kit or gloss black wheels. GM Authority said production should begin in June or July, so we can look forward to info closer to summer. Related Video:    

2020 GMC Sierra Heavy Duty First Drive Review | King of the haul

JACKSON HOLE, Wyo. — The 2020 GMC Sierra Heavy Duty is a bit of a mixed bag. It excels at the tasks an owner is likely to require from a massive pickup truck, but the interior is a definite letdown. Taken as a whole the truck boasts several class-leading specifications and features that make up for the lackluster look and feel of the cabin. And it's much more successful than the mechanically similar Chevy Silverado HD, which shares the Sierra's weaknesses but few of its subjective strengths. GMCÂ’s Sierra HD may share most of its major bits and pieces with the Silverado, but the strongest reason to pick the GMC over the Chevy is that the SLE and SLT trims of the Sierra HD are legitimately handsome. And the rugged, off-road-themed AT4 package is new for 2020 with a blacked-out look that we think a lot of buyers are going to love. Even the ostentatious, chrome-dipped Denali trim looks classy compared to the in-your-face look of FordÂ’s Super Duty line. The same canÂ’t be said for the Silverado HD, which, depending on trim level, varies from garish to just plain ugly. The six-function MultiPro tailgate is the next major differentiator. ItÂ’s not perfect — and mounting a hitch ball in the receiver renders some of its functionality unusable — but itÂ’s unique and potentially very useful to a subset of truck customers. WeÂ’ve covered MultiPro several times already, but if youÂ’re still not clear on its advantages, watch the video below for a demonstration (that's a light-duty Sierra in the video, but the tailgate works the same). This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings. Another unique selling proposition is the AT4 trim, since Chevrolet doesnÂ’t (yet) offer its Trail Boss package on the Silverado HD. The most obvious competitor to the Heavy Duty AT4 is the Ram Power Wagon, and the GMCÂ’s 3,615 pounds of payload and 18,500 pounds of towing capability handily outdo the RamÂ’s ratings of 1,660 and 10,620. Granted, the trucks arenÂ’t aimed at quite the same buyer — the Power Wagon has legit off-road credibility thanks to upgrades like its electronically disconnected sway bars, 12,000-pound Warn winch, and a forward-facing trail camera. But unlike the GMC Sierra AT4, it isnÂ’t available with a diesel. No matter; those aiming for a rough-and-tumble appearance in a heavy duty now have a couple options.