2004 Chevy Silverado Ls 2500hd 4x4 Duramax Diesel Truck on 2040-cars

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2016 Chevrolet Colorado Diesel First Drive [w/video]

The first thing you notice inside the diesel Chevy Colorado is that it's quiet. Almost too quiet. A lot has been done to quell noise and vibration with this new powertrain, and it shows – or rather, doesn't. There's some characteristic diesel clatter at idle, but even then it's distant and practically disappears as you start moving down the road. At full throttle, when the engine is at its noisiest, the sound isn't particularly diesel-like, just a pleasant intake breath. The accompanying smoothness is almost eerie. When we ask where all the noise went, Chevy's engineers, marketing guys, and PR reps all explain that this refinement is what Americans want. We're still not sure. This is a truck, after all, and the diesel pickup customer is different from the guy buying a diesel Cruze for his highway commute. Chevy contends that they're also not the same as the buyer of a Silverado HD. Although this 2.8-liter Duramax four-cylinder has been in service elsewhere around the globe, its first US application is in the Colorado and its GMC Canyon twin. The engine puts out 181 horsepower and 369 pound-feet of torque, and it does so unobtrusively as a result of a lot of modifications for our market. To keep normal diesel sensations out of the cabin, the intake and oil pan both get acoustic treatments. A new, thicker material is used for firewall sound deadening. Redesigned balance shafts have tighter tolerances to increase smoothness. The diesel powertrain is smoother than the Colorado's gasoline V6. One of the more interesting and certainly unexpected vibration-reduction changes is a special torque converter from German supplier LuK equipped with a centrifugal pendulum absorber. This pendulum spreads from the center of the torque converter as engine speed increases and is tuned to absorb the four-cylinder's second-order vibrations, not just those in a narrow frequency band. It does an admirable job, especially considering the engine's biggish, 0.7-liter cylinders, which lead to bigger vibrations. The result is a powertrain that's smoother than GM's (not particularly smooth) corporate V6, which is available in the standard Colorado. It's quieter than a Cruze diesel and even out-softens some gas direct-injection engines on the market. Paradoxically, it may be the most refined of all of the Colorados. No vibration comes through the steering wheel, pedals, floorboards, or even the rearview mirror. But you can tell it's a diesel when you hit the throttle.

Chevy Sonic shreds like a skateboard

Despite the fact that the 2013 Chevy Sonic is a fun, plucky little thing - especially in ever-so-slightly hotter RS guise - it is not, in fact, a skateboard. But don't tell that to rapper Theophilus London.
In General Motors' latest spot for the Chevrolet compact, London needs to make a quick run to the store for some milk. And even though, once again, the Sonic is not a skateboard, it ollies, pops and gets air because, you know, it's just so much fun to throw around.
If this video looks familiar to you, it's because this is the full ad that we first got a preview of in Chevy's longer, full-line spot, where the brand's "Find New Roads" tagline was introduced. Scroll down to see this dedicated Sonic spot, along with the older ad, and remember, the Sonic is still - still - not a skateboard.

Recharge Wrap-up: GM, LG Chevy Bolt collaboration, Honda Energy Star plants

Green Car Reports details the relationship between GM and LG in the development and production of the Chevy Bolt. The unique relationship between the two companies began in 2008, and now sees LG producing a multitude of systems for the Bolt, many of which were designed by or with GM. LG's involvement in the Bolt has gone so deep as "defining what will this vehicle be, everything from how we are going to package it, what size it should be, what kind of performance it should have," according to Pam Fletcher, GM's Executive chief engineer for electrified vehicles. Forgoing the traditional automotive relationship for a more collaborative one doesn't just save money, but it also gives GM access to LG's suite of technologies and manufacturing capabilities. Read more at Green Car Congress. The EPA has awarded three Honda factories with Energy Star certification. The automaker's assembly plants in Marysville and East Liberty, Ohio have now earned Energy Star certification ten consecutive years. The Marysville plant added LED lighting, hydrogen-powered tow motors and forklifts, high efficiency HVAC and direct-fired water boilers. The East Liberty facility added new LED lighting and replaced a large water heater with a high-efficiency one. Honda's newest US plant, Honda Manufacturing of Indiana, installed LED lighting and used energy efficient features in its recent expansion. Honda also cites a culture of energy-mindedness – for every associate – for its success. "When everyone involved considers energy efficiency and how they can help the environment, results improve," says Karen Heyob, Honda's sustainability boss in North America. Read more from Honda. The student-led Associated Students of the University of Montana (ASUM) Transportation has ordered two Proterra electric buses. The 40-foot Catalyst Fast Charge buses will serve the campus, and will recharge with a semi-autonomous fast charger. "As part of our ongoing effort to innovate service, align with student advocacy and reduce our carbon footprint, we take great pride in our decision to go electric," says ASUM Office of Transportation Director Jordan Hess. "We hope this encourages – and challenges – other universities to seriously consider the economic and environmental benefits of zero-emission buses." Read more in the press release below. First Student-led Transit Agency in the U.S.