2013 Chevrolet Silverado 1500 Ltz 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.

NHTSA ends GM steering investigation without seeking a recall

DETROIT — U.S. safety regulators have closed an investigation into sticky power steering on thousands of older General Motors SUVs and will not seek a recall. The National Highway Traffic Safety Administration says GM in 2014 issued “special coverage” to fix the problem on the Chevrolet Equinox, GMC Terrain and other models. The coverage replaced a steering gear with an improved one. The agency said a recall isn't needed because of the coverage and low complaint and warranty repair rates. The agency opened the probe in June of 2020 into steering problems affecting an estimated 781,000 of the SUVs from the 2010 through 2012 model years. Increased friction could make it feel like the steering wheel is stuck. But GM said the SUVs could still be turned, although with more effort than usual. “In view of the special coverage, low rate of failure and low potential hazard to drivers, this preliminary evaluation is closed,” the agency wrote in documents posted Wednesday on its website. Government/Legal Recalls Chevrolet GMC Safety

How to locate a fleet Chevy Caprice PPV you can buy

The Chevy Caprice shares the same platform as the now-defunct Pontiac G8 and Chevy's SS sedan. The Pontiac G8 received excellent reviews, but the economy was not doing so well, and gas prices were high, so no one bought them and Pontiac went under. The Caprice PPV is available with a 3.6-liter V6 with 300 horsepower or a 6.0-liter V8 with 355 hp. It comes standard with heavy-duty suspension and a limited-slip differential on the V8 model. The Chevy Caprice also received praise for its handling and road manners and even received a perfect score in a past assessment by the LA County Sheriff's Department. Unfortunately, you won't be able to buy one new even if you want one. The Chevy Caprice PPV is a fleet vehicle available only to law enforcement. However, if you go on Cars.com, select Chevrolet in the dropdown, click all types of vehicles, change the year filter from 2011 to 2015 and type in the keyword Caprice, lo and behold, listings for pre-owned Caprice PPVs appear. Many of these have low mileage and were not sold for whatever reason, and they sat around. Some come with the remainder of the three-year / 36,000-mile bumper-to-bumper warranty and a five-year / 100,000-mile warranty on the powertrain. Those who have strong negotiating skills can extend the bumper-to-bumper warranty a couple of years for around $1,500 or less. The purchase price of the Caprice PPV is around $30,000 to 34,000. The pre-owned ones are less; dealers took the brunt of the depreciation cost. Best of all, the bonus of driving a Chevy Caprice PPV is everyone driving around you will follow the speed limit and every motor vehicle rule in the book because they think you are the law. Used ex-law enforcement fleet purchase are risky. But this is too unique to pass up, go buy one quick. There are only a couple in the country at the moment. Follow me on Twitter: Donkleblanc Related Video: Image Credit: wikimedia Chevrolet Used Car Buying Police/Emergency chevy caprice chevy caprice ppv open road