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Next-gen GMC Sierra spied with diesel power

The next generation of GM trucks is arriving soon, and we're expecting a huge leap forward over the current lineup. The Chevy Silverado and the GMC SIerra sell extremely well, but haven't done much to move the segment forward in a long time. The Ford F-150 has an all-aluminum body and turbocharged V6 power. The Ram 1500 gained a diesel and coil spring suspension. These spy shots show that diesel may be in the cards for GM. Some quick shots and copious use of flash show what is most likely a tank for diesel exhaust fluid and a diesel particulate filter, both necessary equipment for any modern diesel. It's unclear what form factor that engine will come in, though GM has a number of engines to choose from, including the 2.8-liter inline four that's found in the Colorado and Canyon, though that may be a little light duty for the Silverado and Sierra. Other rumors surrounding the trucks suggest a move to an aluminum cab while retaining a steel bed. That seems like a reasonable move for GM, even if the company was attempting to shame Ford for its move to aluminum a few years ago. Look for more news as early as the Detroit Auto Show in January. Related Video: Featured Gallery 2019 GMC Sierra spy shots View 21 Photos Image Credit: Spied Bilde Spy Photos Chevrolet GMC Truck

Autoblog Minute: Finalists announced for 2016 Tech of the Year award

Here are the finalists for Autoblog's 2016 Technology of the Year award. Autoblog's Chris McGraw reports on this edition of Autoblog Minute, with commentary from Autoblog executive producer Adam Morath, AutoblogGreen editor-in-chief Sebastian Blanco, and Autoblog senior editor Alex Kierstein. Show full video transcript text [00:00:00] It's Fall here in Detroit and for us that means it's time for football, autumn beers, and the fourth annual Autoblog Tech of the Year awards. I'm Chris McGraw and this is your Autoblog Minute. Tech of the Year is one of our favorite things here at Autoblog. It's a time when we get celebrate all the best tech from the industry we love most. [00:00:30] - [00:01:00] [Commentary form Adam Morath, Sebastian Blanco, Alex Kierstein] Past winners include, Tesla's Supercharger network, FCA's Uconnect system and the BMW i8. In 2016 we're doing something a little different for Tech of the Year. We've separated our award into two categories. One award for best tech car, and a second award for best technology of the year. The nominees for best car in 2016 are: [00:01:30] the Tesla Model S, the Chevrolet Volt, and the BMW 7 series. The nominees for best tech in 2016 are: Apple CarPlay, Android Auto, Volkswagen's MiB II with AppConnect, Ford Sync 3, Audi's Virtual Cockpit, the Smart Cross Connect App, and Volvo Sensus. [00:02:00] We're going to announce Autoblog's Tech of the Year winners in January at the 2016 North American International Auto Show, in Detroit. For Autoblog, I'm Chris McGraw. Autoblog Minute is a short-form video news series reporting on all things automotive. Each segment offers a quick and clear picture of what's happening in the automotive industry from the perspective of Autoblog's expert editorial staff, auto executives, and industry professionals. Green BMW Chevrolet Ford Hummer smart Tesla Volkswagen Volvo Technology Infotainment Autoblog Minute Videos Original Video

Chevy's 6.6-liter Duramax is pretty much all new

To say there's a heated battle in heavy-duty pickups is an understatement, with Chevrolet, Ford, and Ram constantly trading blows of increased torque, horsepower, and towing capacity. The latest salvo is the revised, more powerful turbo diesel 6.6-liter Duramax V8 in the 2017 Chevy Silverado. It has 910 pound-feet of torque, an increase of 145, putting it nearly level with the Ford Super Duty. Here's a closer look at where those gains come from. How exactly did Chevrolet add all that torque plus 48 horsepower? The automaker essentially took a fine-tooth comb to the entire engine. Chevy says it changed 90 percent of the V8, and the cumulative effect of those small changes adds up to big increases. As you might guess, the turbocharger is updated. The larger unit features electric actuation of the variable nozzle turbine (VNT), and what Chevy calls a double axle cartridge mechanism that separates the VNT moving parts from the housing. That helps with heat performance as well, with a claim that the exhaust side of the turbo can run continuously up to 1,436 degrees Fahrenheit. Helping that cause are six exhaust gaskets made of Inconel - an nickel alloy that contains chromium and iron – and upgraded stainless steel for the exhaust manifold. Despite having the same cast iron cylinder block, albeit with some minor enhancements, the engine has new cylinder heads, pistons, piston pins, connecting rods, and crankshaft, which have all been upgraded to handle 20 percent higher cylinder pressures. Alongside the increase in pressure, Chevrolet also increased the cylinder head's structure with a honeycomb design. The pattern features high-strength aluminum with dual layer water jackets that not only improve strength, but also optimize water flow for better cooling. For 2017, the cylinder head also benefits from integrated plenum that aids the engine in getting more air under heavy loads. The cylinder head isn't the only component to get a minor update, as the pistons have a larger diameter pin for improved oil flow. The same detailed improvements has been bestowed to the humble connecting rods (second in our hearts only to the inanimate carbon rod). The new design has the bolts oriented roughly 45-degrees to the rod instead of parallel. The angle split design, as it's called allows for easier passage through the cylinder.