2007 Chevrolet Uplander Lt Braun Entervan Wheelchair Van on 2040-cars

Auto blog

Is the skill of rev matching being lost to computers?

If the ability to drive a vehicle equipped with a manual gearbox is becoming a lost art, then the skill of being able to match revs on downshifts is the stuff they would teach at the automotive equivalent of the Shaolin Temple. The usefulness of rev matching in street driving is limited most of the time – aside from sounding cool and impressing your friends. But out on a race track or the occasional fast, windy road, its benefits are abundantly clear. While in motion, the engine speed and wheel speed of a vehicle with a manual transmission are kept in sync when the clutch is engaged (i.e. when the clutch pedal is not being pressed down). However, when changing gear, that mechanical link is severed briefly, and the synchronization between the motor and wheels is broken. When upshifting during acceleration, this isn't much of an issue, as there's typically not a huge disparity between engine speed and wheel speed as a car accelerates. Rev-matching downshifts is the stuff they would teach at the automotive equivalent of the Shaolin Temple. But when slowing down and downshifting – as you might do when approaching a corner at a high rate of speed – that gap of time caused by the disengagement of the clutch from the engine causes the revs to drop. Without bringing up the revs somehow to help the engine speed match the wheel speed in the gear you're about to use, you'll typically get a sudden jolt when re-engaging the clutch as physics brings everything back into sync. That jolt can be a big problem when you're moving along swiftly, causing instability or even a loss of traction, particularly in rear-wheel-drive cars. So the point of rev matching is to blip the throttle simultaneously as you downshift gears in order to bring the engine speed to a closer match with the wheel speed before you re-engage the clutch in that lower gear, in turn providing a much smoother downshift. When braking is thrown in, you get heel-toe downshifting, which involves some dexterity to use all three pedals at the same time with just two feet – clutch in, slow the car while revving, clutch out. However, even if you're aware of heel-toe technique and the basic elements of how to perform a rev match, perfecting it to the point of making it useful can be difficult.

2016 Chevy Colorado Duramax makes 369 lb-ft for $3,730 premium

Since announcing the new Chevrolet Colorado in late 2013, there has been absolutely no secret that the 2.8-liter Duramax diesel would wind up under the hood of the midsize pickup truck for the 2016 model year. It has been a long wait for those wanting the oil-burner, but thankfully, the anticipation is nearly at an end. Chevy is finally officially unleashing details about the four-cylinder, which churns out 181 horsepower and 369 pound-feet of torque. The diesel is available in both LT and Z71 Crew Cab trims, and there's the choice of two- or four-wheel drive. All come with a six-speed automatic gearbox with a standard automatic-locking rear differential. An electronically controlled two-speed transfer case comes on four-wheel drive models, as well. The Z82 trailering package also arrives on all of the Duramax pickups and includes an exclusive integrated trailer brake controller. The first shipment of diesels arrives at dealers this fall with a price of $3,730 on top of a comparably equipped version with the 3.6-liter V6. Customers opting for the Duramax are getting more capability from the Colorado. With a 7,700-pound tow rating on two-wheel drive examples (7,600 pounds with four-wheel drive), drivers can haul 600-700 pounds more behind the truck than its petrol V6 counterpart. Fuel economy numbers haven't been announced yet, but are expected to top the gasoline versions. The engine is also B20 bio-diesel compatible. Beyond being just a good hauler, Chevy is throwing cutting-edge tech into these models. For example, this is the company's first application of a Centrifugal Pendulum Vibration Absorber on the transmission's torque converter. The device is a dampener that cancels out torsional vibration from the engine for a more comfortable ride for occupants. There's also a driver selectable exhaust brake system that uses engine compression to help slow down the truck and reduce brake wear. You can read more about the nuts and bolts of the diesel in Chevy's press release below. Chevrolet Introduces Colorado Duramax Diesel All-new turbo-diesel expands lineup with unparalleled capability, efficiency DETROIT – The fastest-selling truck in the market now offers an available turbo-diesel engine. The 2016 Chevrolet Colorado Duramax diesel takes midsize truck capability and efficiency to unprecedented levels.

Chevy Silverado Midnight Edition coming to Chicago

Between the GMC Canyon Nightfall Edition and Chevy Silverado Custom Sport, the truck divisions of General Motors had no lack of blacked-out custom pickups to showcase at the Detroit Auto Show this year. But now the General has announced one more. Called the Midnight Edition, for this special Silverado blacks out all the trim, including the grille, bumpers, headlamp bezels, tow hooks, fog lamps, side and beltline moldings, 19-inch wheels, bedliner and bowtie emblems. It's based on the Silverado 1500 with the Z71 package, so it also boasts an off-road suspension, locking rear differential, hill-descent control and trailering pack. While it was at it, Chevy has also thrown in rear park assist and power heated door mirrors. Buyers will be able to choose between double- or crew-cab models, but no more than 5,000 examples will be produced this year, each priced at a premium pegged between $1,595 and $1,995 (depending on the model). The Silverado Midnight edition debuts today at the National Automobile Dealers Association convention in San Francisco and will be showcased at the Chicago Auto Show next month, around the time that deliveries will commence. 2015 Silverado Midnight Edition is The New Black Monochrome appearance package to debut at NADA and Chicago Auto Show 2015-01-22 DETROIT – Truck fans know that nothing adds presence to a pickup like basic black. And Chevrolet is taking black to the next level with the Silverado Midnight special edition, on display starting today at the National Automobile Dealers Association Convention & Expo in San Francisco, and making its public debut February 14 at the Chicago Auto Show. Beginning with a black Silverado Z71, the Midnight special edition adds: - An all-black front end with body-colored grille, bumper, headlamp bezels, tow hooks and fog lamps; - Black side moldings and beltline moldings; - 18-inch black painted alloy wheels with Goodyear Wrangler Duratrac all-terrain tires; - Special Z71 badges on the doors; - A spray-in bedliner (black, of course); - And the finishing touches – black Chevrolet bowties front and rear. Like all 2015 Silverado 1500 Z71s, Midnight special editions include off-road suspension, a locking rear differential, Hill Descent Control and a trailering package. Midnight special editions also include rear park assist and heated, power-adjusted outside rear-view mirrors.