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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.

2016 Chevrolet Volt First Drive

There's a hit vehicle hiding in GM's formula for the Chevy Volt. You can sense it in the enthusiasm that current Volt drivers have for their cars. You can see it in the amount of money GM has poured into its extended-range electric vehicle project. And perhaps most importantly, you can feel it from the driver's seat of the new, second-gen model. The big question is whether or not GM will be able to turn its much-hyped 'halo car' into a best-seller this time around. After driving it in northern California, I can tell you that the Volt is tremendous. But we all know it takes more than that to create a hit. GM has so far sold over 82,000 Volts in the US. That's respectable, but in the early, glory days before the car launched, company representatives were talking about much more impressive numbers. With a few years to talk to customers and potential prospects, GM has learned a lot about what makes someone buy a Volt. For the 2016 model, Chevy has changed just about everything for the better. The new Volt has more all-electric range (53 miles vs. 38 in the first generation), is more fuel efficient whether you're looking at the overall value (106 combined MPGe vs. 98) or just when the car burns gas (42 miles per gallon vs. 37). All of that means that the car's overall range is bumped up to 420 miles, from 380. The battery is smaller and lighter while offering more energy capacity. The range-extending gas engine is bigger (1.5 liters vs. 1.4) but it's also more efficient and can burn regular gasoline instead of just premium. The Volt's overall range is bumped up to 420 miles, from 380. The cost is lower, too: $33,995 vs. $34,170, before incentives. This is a car that GM thinks will compete against the Toyota Priuses and Nissan Leafs of the world (as its new ads make abundantly clear). All three cars have completely different powertrains, but we all know that they're the headline green cars of our time (along with Tesla), so buyers will have to want to pony up a bit more money if they like what the Volt is offering. The 2016 Leaf with its 107-mile range starts at $37,640 (before incentives), while a 2015 Prius can be had for $25,035 (pricing for the 2016 has not yet been announced). So, on paper, the new Volt is an all-around winner. I'm here to tell you that it wins on the road, too. You can't help but notice the changes. They are literally front and center.

GM applies for LT5, LTX trademarks... are new small block variants coming?

Recently discovered General Motors trademark applications for LT4, LT5, LT88 and LTX have observers wondering what kind of high-performance offerings could be on their way. A new LT4 would mark a return of the engine designation first used on the Corvette Grand Sport, SLP Pontiac Firehawk and SLP Chevrolet Camaro SS from 1996 and 1997. Supposition at Corvette Forum - which provided advance intel on the C7 like these leaked images - believes a new LT4 could go into the high-performance trim of the next-gen, 2015 Camaro that would be more powerful than the 580-horsepower Camaro ZL1.
Seeing an LT5 again would also be déjà vu - in its former life it was a 5.7-liter V8 for the C4 Corvette ZR-1 from 1990-1994 designed by Lotus, producing from 370 hp to 405 hp. A mix of rumor and hope is that the new LT5 will be a supercharged evolution of the 6.2-liter LT1 (pictured) placed in the new C7 Corvette, and that it will go into the C7 version of the ZR1 pumping out something like 700 hp.
The LTX trademark is, as with that last letter, a complete mystery. If the "X" isn't a generic way to denote the whole LT family, it's wondered if it LTX could refer to a crate motor offering like the LSX.