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GM will recall 3.5 million pickups and SUVs to fix brake issue

WASHINGTON — General Motors Co is recalling 3.46 million U.S. pickup trucks and SUVs to address a vacuum pump issue that could make braking more difficult and increase the risk of a crash. The recall, which covers 2014-2018 model year vehicles, including some Cadillac Escalade, Chevrolet Silverado, Chevrolet Tahoe, GMC Sierra, Chevrolet Suburban and GMC Yukon vehicles, was triggered because the amount of vacuum created by the vacuum pump may decrease over time, GM told the National Highway Traffic Safety Administration (NHTSA) in documents posted Wednesday. NHTSA opened a preliminary investigation into the issue in November 2018, and said it had reports of 9 crashes and two injuries related to the issue. It provided GM in July with additional field reports that prompted the automaker to open an investigation. The company did not immediately say on Wednesday how many injuries or crashes are linked to the issue but said it could impact braking in "rare circumstances." GM said dealers will reprogram the Electronic Brake Control Module with a new calibration that will improve how the system utilizes the hydraulic brake boost assist function when vacuum assist is depleted. GM said the vacuum assist pump, which is lubricated with engine oil that flows into the pump through a filter screen, can in some cases lose effectiveness over time, as debris such as oil sludge can accumulate on the filter screen. GM told NHTSA that prior model years used a different brake assist system design, and vehicles manufactured after 2018 were not equipped with the affected pump design. Recalls Chevrolet GM GMC

Chevy's latest Silverado videos assume we're idiots

UPDATE: This article has been revised to reflect that any mention of materials used in a future Chevrolet Silverado is speculation. Can we have a sound, rational debate about the merits of aluminum versus steel? According to Chevrolet's latest marketing videos pitting the Silverado against the Ford F-150, the answer is no. The tone of all three ads is almost Orwellian: steel good, aluminum bad. Of course, this will all be a hilarious joke when an aluminum-bodied Silverado comes in 2018. That's an if, as a member of the General Motor public relations team has reminded me that any articles regarding future product are pure speculation. Until then Chevy needs to sell the current Silverado, with its body comprised chiefly of steel, against the Ford F-150's lightweight aluminum panels. Instead of touting the merits of the "most-dependable, longest lasting pickup," the strategy seems to center around negative propaganda towards the 13th element. The tone of all three ads is almost Orwellian: steel good, aluminum bad. Of the three videos, the most fair is Silverado vs. F-150 Repair Costs and Time: Howie Long Head to Head. Basically: aluminum costs more than steel, it's more difficult to repair, and requires special equipment for body shops. In terms of Chevy versus Ford, the blue oval truck costs more and takes longer to repair - an average of $1,755 more and 34 more days in the shop, according to the ad. But why stop there when you can have pitchman Howie Long raising an eyebrow at random facts? When Silverado Chief Engineer Eric Stanczak says of the Ford, "It's manufactured in a way that combines aluminum, rivets, and adhesive in a process that's different than Silverado." Long responds, "Huh. Interesting." At the end of the video, Long says "I'd be interested to know what happens to insurance costs." Note he's not saying anything substantive. If Chevy's legal team could sign off on some facts about insurance rates, it would be in this ad. On our Autoblog Cost to Own calculator, there is no significant difference in projected insurance costs between the two trucks. But at least that ad has facts. The other two videos are pure hype. In Cages: High Stength Steel, real people are asked what they think of aluminum and steel in a room with two cages. Then a bear is released into the room, and the subjects scurry to the safety of the steel cage.

2020 Chevy Corvette Stingray vs the world: How it compares on paper

The 2020 Chevy Corvette Stingray in its base form offers an astonishing amount of performance for the money. In fact, so impressive is the car's spec sheet that the Corvette kind of exists in two different competitive sets: one of cars priced similarly, and another with cars of similar performance and reputation. To get a feel for how it handles each of these segments, we've compiled specifications for those two sets of players. You can find the first set below, which looks at cars of roughly the same price point. Following that is a bit of analysis, and then there's a chart of cars with similar performance and reputation. And that chart will also have some analysis. Though final pricing for the Corvette hasn't been announced yet, we know the Corvette will start at less than $60,000. And as far as pricing goes, its closest competitor is the Porsche 718 Cayman, which also starts at just under $60,000. Both are mid-engined and rear-drive, but the Corvette offers an extra 195 horsepower and 190 pound-feet of torque. The Cayman does boast a curb weight of right around 3,000 pounds, so it weighs a few hundred pounds less than the Corvette, but it's likely not enough to make up for the power deficit. The Corvette's sub-3.0-second 0-60 time bears this out against the Cayman's best 4.5-second run. Impressively, though, the Cayman has more cargo space than the Corvette in a package that's nearly 10 inches shorter. The Cayman also still offers a manual option for those that prefer self-shifting. The 2020 Toyota Supra is on the cheap end of this sports car class, just crossing $50,000. It also boasts more power than the Cayman, though it's still down by 160 ponies and 105 pound-feet of torque to the C8. It's also about as roomy as the Corvette, despite being about the same size as the Cayman. Cargo space is a bit tighter. Its driving characteristics will likely differ, too as the Supra sits on a front-engine platform. It might even feel closer to a C7 Corvette in some ways. The other mid-engine entry in this price range is the 2019 Alfa Romeo 4C Spider. Its small 1.7-liter turbo inline-4 only makes 237 horsepower and 258 pound-feet of torque, but it's also far and away the lightest of this group at 2,487 pounds. That's roughly 1,000 pounds lighter than the Corvette. It isn't as fast as the Corvette in a straight line, but that lightness surely pays dividends in cornering and braking.