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2014 Chevy Silverado High Country spied wearing trappings of new luxury trim

Spy photographers have spotted the new Chevrolet Silverado High Country and GMC Sierra Denali out on public streets for a little testing. From the looks of things, the Silverado will receive a much-differentiated front fascia along with special badges and those honking 20-inch chrome wheels. Expect to find a more posh interior as well. Likewise, the Sierra Denali will wear a tweaked nose with the familiar Denali bling. The one of the GMC trucks spotted here rolls on 21-inch gunmetal wheels instead of the 20-inch chrome pieces of the High Country.
Word has it both trucks will go on sale after the Texas State Fair this summer. While General Motors hasn't said for certain what we can expect to find under the hood, we'd be surprised to see anything outside of the range of engines found in the standard Silverado and Sierra models. That means buyers should be able to get their hands on the efficient, 23-miles per gallon 5.3-liter V8.

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.

GMC Hummer EV heads north for winter

GMC announced early Tuesday that its new Hummer EV pickup is ready to head north for winter testing. What might seem like a trip in the wrong direction to us warm-blooded enthusiasts is a critical next step in the development of GM's new electric truck.  We also got a couple of teaser pics of the Hummer EV at GM's Milford Proving Grounds, along with two shots of development prototypes being assembled, of which GM says it has "a series." There's not much new to see here, but GM says there's more to come. "The GMC HUMMER EV has arrived at GM’s Milford Proving Grounds to continue validation tests and will head to northern Michigan to run through the teamÂ’s grueling winter testing process," GM said in its announcement. "We will document the journey and share updates in the coming weeks and months." The GMC HUMMER EV arrived at GM?s Milford Proving Grounds to c View 3 Photos The GMC Hummer EV Edition 1 will feature three electric motors, enabling torque vectoring. GMC says these motors produce 1,000 horsepower, though we don't yet have a final torque figure. Power comes from a 24-module Ultium battery pack which can provide an estimated 350 miles (or more) of range. GMC says this new architecture supports 800-volt fast charging up to 350 kW, which is comparable to the system Porsche introduced with its Taycan electric sedan, and GMC says it can replenish 100 miles of range in just 10 minutes. Planned variants include a two-motor setup, and an alternative three-motor version without torque vectoring. The Hummer EV rides on fully independent suspension with adaptive air shocks. They can provide continuous damping adjustments for comfort, and have a height adjustment range of 6 inches. When set in its max-height off-road mode, it has two additional inches of ground clearance, and the "Extract Mode" will lift it six inches higher than default. The Edition 1 model also comes with standard 35-inch mud terrain tires, and combined with the suspension, the Hummer EV has a fording depth of two feet and the capability to climb over an 18-inch vertical obstacle. Edition 1 Production begins late next year, with a starting price of $112,595. In fall 2022, we'll see the regular top trim starting at $99,995; In spring 2023, weÂ’ll get a mid-level trim that has three motors, air suspension and four-wheel steering -- but no torque vectoring -- starting at $89,995.