2012 Gmc Sierra 1500 Sle 4wd Crew Cab Wb 6-speed Automatic 4 Door Truck Black on 2040-cars

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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.

GM laying off more than 4,000 workers Monday morning

According to reports from Automotive News, The Detroit News, and CNN, General Motors plans to begin laying off more than 4,000 salaried workers starting Monday morning. In a statement to AN, a spokesperson for the automaker said, "We are not confirming timing. Our employees are our priority. We will communicate with them first." We've been expecting layoffs at General Motors since November, 2018. At the time, the Detroit-based automaker announced it would seek to shed 8,100 salaried employees, shut down five assembly plants in North America, and kill off several slow-selling models. One month earlier, GM offered buyout packages to 18,000 workers and said it would seek to cut its global workforce by 25 percent. A spokesperson said at the time the moves were "proactive steps to get ahead of the curve by accelerating our efforts to address overall business performance." The cost-cutting moves are expected to save GM up to $2.5 billion in 2019 and as much as $6 billion by 2020. David Kudla, CEO and chief investment strategist of Mainstay Capital Management, referred to the impending culling as "Black Monday" and told The Detroit News that the layoffs would begin around 7:30 a.m. and continue in waves throughout the coming days and weeks. GM plans to deliver on its fourth-quarter and full-year 2018 earnings report on Wednesday. President Donald Trump plans to deliver the annual State of the Union address a day earlier on Tuesday. We expect to hear plenty more from both sides over the next several days.

GM claims it's first to sell million 30+ mpg vehicles

As we continue to put together all the data for the year-end edition of By The Numbers, General Motors has announced that it sold more than a million vehicles in the US last year that achieved at least 30 miles per gallon on the highway. More impressively, GM managed this feat using multiple strategies including small vehicle size, turbocharged engines and hybrid or plug-in technologies across four brands (Buick, Cadillac, Chevrolet and GMC) accounting for 13 separate models. This number will grow even more in 2013 thanks to cars like the all-electric Spark, the diesel Cruze, the range-extended Cadillac ELR and the Buick Encore compact CUV.
GM's small car sales were up 39 percent last year helping to attain this million-sales mark for 30-mpg models, and almost 40 percent of all GM sales consisted of cars with fuel-efficient I4 engines. In regards to more advanced means of improving fuel economy, GM says that it plans on having 500,000 vehicles with "some form of electrification" on the road by 2017.
Scroll down for the full list of GM's million 30+ mpg cars as well as an informative press release.