08 Chevy 2500 Ltz 4x4 Duramax Diesel Crew Cab Leather Heat Seat We Finance Texas on 2040-cars

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2014 Chevy Silverado High Country spied wearing trappings of new luxury trim

Spy photographers have spotted the new Chevrolet Silverado High Country and GMC Sierra Denali out on public streets for a little testing. From the looks of things, the Silverado will receive a much-differentiated front fascia along with special badges and those honking 20-inch chrome wheels. Expect to find a more posh interior as well. Likewise, the Sierra Denali will wear a tweaked nose with the familiar Denali bling. The one of the GMC trucks spotted here rolls on 21-inch gunmetal wheels instead of the 20-inch chrome pieces of the High Country.
Word has it both trucks will go on sale after the Texas State Fair this summer. While General Motors hasn't said for certain what we can expect to find under the hood, we'd be surprised to see anything outside of the range of engines found in the standard Silverado and Sierra models. That means buyers should be able to get their hands on the efficient, 23-miles per gallon 5.3-liter V8.

Dodge Challenger outsold Mustang, Camaro in third quarter of 2019

The Dodge Challenger is nearly old enough to start driver's ed in some states, and it doesn't have a firm grasp on the increasingly crucial concept of downsizing, yet it beat the odds to become the most popular American two-door model during the third quarter of 2019. Its ballooning sales figures suggest buyers don't always want the latest, most advanced car they can get their hands on. Dodge sold 18,031 examples of the Challenger during the third quarter of 2019, a shocking 21% increase over the same period in 2018. It's a true muscle car, normally sardined in the same can as the Chevrolet Camaro and the Ford Mustang, a pair of smaller, nimbler two-doors that are much closer to the historic definition of a pony car. Semantics aside, the Mustang finished on the second spot of the sales podium with 16,823 sales, a 12.3% drop compared to the third quarter of 2018, and the Camaro took third with 12,275 sales, a 15% dip that alarmingly comes in the wake of two redesigns. More specific sales figures aren't available. We don't know what percentage of the sales mix V8s represent, or whether buyers prefer manual or automatic transmissions. The scoreboard looks different when we examine 2019's year-to-date figures. The Mustang takes first place with 55,365 sales, followed by the Challenger at 46,699, and the Camaro at 36,791. While the Challenger's recent ascent is encouraging, it can't mask the fact that two-door models no longer enjoy a favorable tailwind, and the entire segment — not just the American entries — is declining. The aforementioned year-to-date figures are down by 10.1, 11, and 7.6 percent, respectively. The third-quarter statistics revealed a handful of other surprises unrelated to the world of performance. Dodge notably sold three examples of the Dart, a sedan it hasn't built since 2016. That's a 93% drop compared to the 45 units that found a home during the third quarter of 2018.

'Killing a Duramax' Gale Banks YouTube series methodically tunes a diesel to death

Learning or perfecting a skill by watching YouTube videos is known as attending YouTube University. GM Authority picked up on one of the video site's more fascinating courses, hosted by Gale Banks; in a fair world, he should be referred to as Professor Banks when it comes to diesel engines and truck tuning. A few months after GM introduced the updated L5P 6.6-liter Duramax diesel V8 in the 2020 Chevrolet Silverado HD and GMC Sierra HD that ships with 454 horsepower and 910 pound-feet of torque, Banks decided he wanted to methodically tune the engine to death. The purpose of the resulting series, called "Killing a Duramax," is to push more power out of the engine in order to discover which parts break and when — or, as Banks puts it, force-feed the Duramax "until the crank hits the street and the heads hit the hood." With that knowledge, Banks can figure out all the weak points on his way to building what he calls a "Superturbo," that being a supercharged, twin-turbo race engine with more than 1,000 hp. What makes the series fascinating is Banks' knowledge, paired with the company's comprehensive iDash engine monitoring system that keeps tabs on a glut of parameters every step of the way. So for instance, you get Banks explaining the differences between inches of mercury and barometric pressure, how those are different from the water content of the air measured in grains, then showing those readouts on the iDash, then explaining in detail how they affect the air density in the Duramax system. The stock Borg-Warner variable turbo gets a lot of airtime — Banks accuses it of being "out to lunch" because he feels it's the weakest link on the engine. That turns into a turbo teardown and a deep explanation of performance pitfalls, such as when air pressure on the turbine begins to diverge from the boost pressure coming from the compressor. Banks says he can keep close tabs on where power's coming from, because the iDash monitors the horsepower contribution provided by the ambient air, the turbo, and the intercooler separately. The major changes so far are a stouter Precision 7675 turbo and TurboSmart wastegate (episode 5), a twin intake (episode 6), a custom liquid-cooled intercooler from a marine engine, a new GM oil cooler and synthetic oil (episode 10), and new injectors (episode 11).