2011 Gmc Sierra 1500 Slt Crew Cab Pickup 4-door 5.3l on 2040-cars

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GM is the latest automaker accused of diesel emissions cheating

Volkswagen and Ram need to make room on the diesel-emissions bench for General Motors. America's largest automaker was accused in a lawsuit on Thursday of rigging hundreds of thousands of diesel trucks with at least three so-called defeat devices to ensure that the trucks would meet federal and state emission standards, even if they generated more pollution in real-world driving. According to the complaint, on-road emissions testing conducted for the plaintiffs found that Duramax-equipped trucks produced NOx pollutants, comprised of nitrogen and oxygen atoms, two to five times higher than legally permitted, and "many times" higher than their gasoline counterparts. The proposed class-action lawsuit was filed in federal court in Detroit on behalf of people who own or lease more than 705,000 Chevrolet Silverado and GMC Sierra pickup trucks fitted with "Duramax" engines from 2011 to 2016 model years. The lawsuit seeks remedies including possible refunds or restitution for lost vehicle value, plus punitive damages. It adds to legal problems for Detroit-based GM, which has already paid about $2.5 billion in penalties and settlements over faulty ignition switches linked to 124 deaths. GM joins at least five automakers whose diesel emissions have been scrutinized by regulators or consumers. They include VW, which has admitted to cheating; Mercedes-Benz parent Daimler; Fiat Chrysler Automobiles, Peugeot and Renault. GM spokesman Dan Flores called the claims "baseless," and said the trucks comply with US Environmental Protection Agency emissions standards and California's own tough standards. Shares of GM were down 69 cents, or 2.1 percent, at $32.50 in afternoon trading, after earlier falling to $31.93. The GM lawsuit was filed by several law firms, including Hagens Berman Sobol Shapiro, which helped reach multibillion-dollar settlements with VW on behalf of drivers and dealers. The case is Fenner et al v General Motors LLC et al, US District Court, Eastern District of Michigan, No. 17-11661. The named plaintiffs are Andrei Fenner of Mountain View, California and Joshua Herman of Sulphur, Louisiana. They said they would not have bought their respective 2011 Sierra and 2016 Silverado trucks, or would have paid less for them, had they known about the alleged rigging. Joseph Spak, an RBC Capital Markets analyst, in a research report said "negative publicity" from the lawsuit could drive buyers to trucks from Ford or even Fiat Chrysler's Ram.

Buick, GMC making OnStar Connected Services standard

The thing about the future is that so long as you're alive, you're going to get there whether you like it or not. Thanks to over-the-air connections essentially being a compulsory part of EV ownership and an increasingly important — and profitable — component of ICE ownership, it's easiest for automakers to install full-featured Internet connections in every vehicle. GM has taken the first step, a report in GM Authority saying that as of June 2, all Buick and GMC models are sold with the Onstar Connected Services plan good for three years. The OnStar site shows the Connected Vehicle tier that comes with a Wi-Fi hotspot costs $24.99 per month, which would be $900 minus a few pennies for three years. At the top end is OnStar Premium that runs about $1,800 for three years. Both include Connected Services features, yet GMA reports that depending on the vehicles, OnStar Connected Services will cost between $905 and $1,675. Only the GMC Hummer EV Edition 1 is excluded for now. GM confirmed the change to GM Authority, saying, "This offering provides our owners with a full suite of OnStar and Connected Services for three years, providing them with more time to enjoy services such as remote key fob, Wi-Fi data and OnStar safety services. By including this plan as standard equipment on the vehicle, it provides more customer value and a more seamless onboarding experience." Three trims of the GMC Sierra 1500 and two trims of the GMC Yukon and Yukon XL come in at the low end, OnStar adding $905 to their MSRPs. Almost every other vehicle gets hit with a $1,500 charge. The GMC Sierra HD Pro is the only model to charge $1,675 for it, which GMA breaks out as a "$1,500 3-year subscription and $175 OnStar & GMC Connected Services Capability." This brings up the question of the price differences; we can't tell if there's a difference in feature content between the price tiers, or why the Sierra HD gets the extra $175 fee. The automaker told GMA the upcharge will be folded into the MSRP. On the configurator for the Sierra 1500 SLE, for instance, the dialog box for three years of OnStar at $1,500 is automatically checked and can't be unchecked. The Buick configurators we tried don't mention OnStar.

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.