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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 Bolt meets 2016 Nissan Leaf at LA NEDW event [UPDATE]

The 2015 National Drive Electric Week kicked off this past weekend with events happening all around the world. Our friends from Plug In America (PIA) send us some notes and pictures from one of the larger events in Los Angeles, CA. This event was special because it saw the debut of the 2016 Nissan Leaf and the west coast debut of the Chevy Bolt concept. The two electric vehicles were in the same place at the same time for the first time ever. Besides that little bit of electric vehicle history, the organizers helped facilitate 800 test drives, PIA co-founder Zan Dubin Scott told AutoblogGreen. The city of Los Angeles also gave proclamations to movie director Chris Paine (Who Killed The Electric Car? and Revenge Of The Electric Car) and the three national organizers of Drive Electric Week: PIA, the Sierra Club and the Electric Auto Association. Speakers at the event included names that should be familiar to AutoblogGreen readers: California state senator Kevin de Leon, race car driver Leilani Munter, and Dave Barthmuss of General Motors, among others. Joel Levin, the executive director of Plug In America, said during his speech that, "Electric cars are changing the world. Every time one of these vehicles gets sold, our air gets a little cleaner. We will take a big bite out of climate change. Our economy will not be subject to wild swings in gas prices. And we will not be involved in foreign wars over oil." Tell us about your own NEDW events (that happened already or are about to happen) in the Comments below. UPDATE: We received the text of Andrew Speaker's comments at the event. Speaker is Nissan's director of Electric Vehicle (EV) Sales & Marketing. We've included them below. Thank you, and good afternoon! On behalf of Nissan, we are proud to sponsor National Drive Electric Week, and we're excited to be able to celebrate it here in Los Angeles with all of you. This is actually my first National Drive Electric Week event, and I am inspired by the level of enthusiasm here today, and seeing everyone's passion for electric vehicles first hand. Nissan has had some big news in the last few days with the introduction of the 2016 Nissan LEAF, which is the world's first affordable electric car to get more than 100 miles of range on a single charge. The 2016 LEAF offers a new 30 kWh battery with an EPA-rated 107 miles of range... and its making its global debut here in Los Angeles.

GM faces possible class action lawsuit over 8-speed transmission

General Motors has been hit with a class-action lawsuit from owners who allege the eight-speed automatic transmission found in several rear-wheel-drive Chevrolet, Cadillac and GMC models between the 2015 and 2019 model years has a defect that causes the vehicles to hesitate and jerk when accelerating or slowing down. The lawsuit was posted to ClassAction.org and spotted by GM Authority. Problems with GM's Hydra-Matic 8L90 and 8L45 transmissions have been well-documented on Internet forums and via complaints filed with the National Highway Traffic Safety Administration, with many reporting damage to their vehicles. The lawsuit was first filed in December in U.S. District Court for the Southern District of Florida but appears to have been transferred recently to New York. Autoblog sought comment from Theodore Leopold, the lead attorney for the plaintiffs. "These transmissions have a common defect," the complaint reads. "Drivers attempting to accelerate or decelerate their cars feel a hesitation, followed by a significant shake, shudder, jerk, clunk, or 'hard shift' when the vehicle's automatic transmission changes gears." The problem also occurs when the vehicles accelerate in a single gear, without shifting, the plaintiffs allege. "Drivers have reported that the shift is sometimes so violent, they feel as though they have been hit by another vehicle." The problem is believed to center on the transmission, torque converter or both. The complaint says it causes undue friction, causing hydraulic systems and gears to function improperly and sometimes leaves metal shavings throughout the transmission, leading to costly repairs and replacement of parts or the entire transmission. It says GM has known about the problems since shortly after it introduced the transmissions, and has issued 13 technical service bulletins, none of which have resolved the problem. GM declined to comment on the lawsuit. The plaintiffs say GM should have warned consumers about the issues and covered repairs under each vehicle's three-year/36,000-mile bumper-to-bumper warranty. They're seeking statewide classes in at least six states: California, Florida, Illinois, New York, Oklahoma and Texas.