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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.

GM shows off 'digital vehicle platform' enabling more in-car tech and OTA updates

It appears to have dropped the sobriquet "Global B," but General Motors' new electrical architecture has bowed in drawings and video. This is the "digital vehicle platform" GM president Mark Reuss spoke to Reuters about in 2015, saying it would move a great deal of a vehicle's computer work to the cloud and enable over-the-air updates. Reuss took the microphone for the debut, too, saying, "Our new digital vehicle platform and its eventual successors will underpin all our future innovations across a wide range of technological advancements, including EVs and expanded automated driving." The system will go into production later this year, appearing in dealerships first either on the 2020 Cadillac CT5 or the mid-engined 2020 Chevrolet Corvette. Yes, these are the same electronics cited for delaying the launch of the C8 Corvette over excessive draw, security and getting the more-than-100 computer modules to communicate seamlessly. When Car and Driver asked about that, GM replied with "No comment." Volkswagen's having the same issues with the Mk8 Golf right now, though, so GM isn't alone, and this will be the new normal among OEMs for a while. What's certifiable is that the new architecture is robust enough to handle 4.5 terabytes of data per hour, which is five times what GM's current wiring can handle. And thanks to Ethernet connections of 100 Mbps, 1 Gbs and 10 Gbs, communication within and without the vehicle happens much faster. The advances mean better screen resolutions, better battery management for hybrids and electric vehicles, the capability for over-the-air updates and "functionality upgrades throughout the lifespan of the vehicle." Cadillac's Super Cruise has already been lined up as a leading candidate for constant improvements in the driving assistance suite, a key part of GM's "vision for a world with zero crashes, zero emissions and zero congestion." And whenever GM decides to take the plunge, it will mean a 48-volt electrical system. More than 300 specialists worked on the digital platform, and security was a huge part of the task. We've already heard that GM consulted with Boeing and military contractors on how to prevent hacking. The carmaker has an internal Product Cybersecurity group that reached out to the research community, and created a "bug bounty" program to crowdsource uncovering any flaws.

2021 GMC Yukon Denali First Drive | Finally living up to the Denali reputation

For most of its existence, the GMC Yukon has been a virtually identical twin to the Chevy Tahoe. It would have some exterior differences, maybe a couple of different features, but aside from the badging, you’d be hard-pressed to distinguish the two. That also applied to the supposedly more luxurious Denali trim level. This new generation of Yukon mostly continues the trend, but now the Denali stands out more. It gets a unique interior designed to bridge the gap between the Yukon and Cadillac Escalade, and includes high-end features such as the Yukon's otherwise optional 6.2-liter V8 and magnetic suspension with air springs. All of this combined lets the 2021 GMC Yukon Denali live up to its luxurious reputation. It's easily the version to get if your bank account allows. It really is the interior that makes the biggest difference. The entire dashboard and door panels are exclusive to not only the Yukon, but the Denali trim level specifically. The dash design is more squared-off and truck-like, but itÂ’s offset by the use of some excellent materials. Large portions of the dash are wrapped in leather with stitching. ThereÂ’s also a large panel of matte-finish open-pore wood, available in multiple colors, on the passenger side. Some metal trim and nicely textured knobs adorn the center stack. The doors get this wood and leather, too. The center console features some attractive, stylized stitching as an extra adornment. The result is a place that feels high-quality and luxurious, but not in a garish or flashy way. Sort of a utilitarian luxury, which fits the look and character of the Yukon Denali. There are aspects of the interior that are shared with other Yukons and Tahoes, though. You get the same slightly odd but perfectly usable push-button shifter, the 10-inch touchscreen infotainment system, 15-inch head-up display, dual 12.6-inch backseat screens, and the same amount of interior space. These are all good things. The infotainment system is responsive and easy to use, while also offering the same advanced trailering camera system that so impressed in the Chevy Silverado HD. The head-up display is also large and legible, and fortunately not cluttered with too much distracting information. The best part, however, is the amount of space.