2012 Gmc Sierra 1500 Sle 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.

Submit your questions for Autoblog Podcast #313 LIVE!

We record Autoblog Podcast #313 tonight, and you can drop us your questions and comments regarding the rest of the week's news via our Q&A module below. Subscribe to the Autoblog Podcast in iTunes if you haven't already done so, and if you want to take it all in live, tune in to our UStream (audio only) channel at 10:00 PM Eastern tonight.
Discussion Topics for Autoblog Podcast Episode #313
2014 Chevrolet Silverado and GMC Sierra introduced

Which of these high-powered pickup classics would you choose?

High-performance pickups would appear to be having a moment on the auction site Bring a Trailer, with two tempting examples up for auction right now: a 1971 Ford Ranchero GT and a 1991 GMC Syclone. These trucks are a generation apart, but they each represent the peak muscle truck of their time. The Ranchero, of course, was Ford's car-based pickup, and Ford took advantage of its Torino roots by offering the same ultra-high-performance 429 Cobra Jet V8 in the Ranchero as it did in the Torino-branded coupes and convertibles. The 429 V8 in this truck is said to be numbers-matching, and it looks the business topped with an air scoop poking through the hood. It's paired with a three-speed automatic and a limited slip differential, reportedly one of only 82 1971-model Rancheros with this powertrain combo. As a Ranchero GT, this example sports hidden headlights, and the dual sport mirrors and vinyl top further establish its kinship with its passenger-car siblings. A set of factory Magnum 500 wheels and a respray in the original red add to the muscle-truck vibe. Two decades later, car-based pickups were dead, so when GMC decided to revive the muscle-truck genre it did so with the mid-size Sonoma. The resulting Syclone put a more modern spin on the fast-pickup idea (and on the spelling of "cyclone"). This hi-po hauler uses a 4.3-liter V6 topped with a Mitsubishi turbocharger that helped it make 280 horsepower. It's mated to a floor-shifted four-speed automatic and a Borg-Warner all-wheel-drive system with a 35/65 torque split. The Syclone was a one-year-only model, of which just under 3,000 were built. All were black with matching cloth seats with red accents. The only other '71 Ranchero to appear on BaT was a non-original GT with a 351ci V8 that was a no-sale at $7,900. This Ranchero is already nearly double that figure. Of the four previously Syclones that have crossed BaT's virtual auction block, two have sold, for $36,000 and $50,000, but both had lower miles than this truck. At this writing, these two trucks are neck-and-neck, both in the mid teens with both auctions set to end April 23. Which powerhouse pickup makes you want to put your money down? Featured Gallery Ford Ranchero and GMC Syclone Ford GMC Truck Classics