2001 Chevrolet Tahoe 4wd on 2040-cars

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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

Experimental mid-engine XP-819 Corvette going up for auction

It seems to be commonplace that when a new Corvette is in development, rumors swirl about a possible mid-engine layout. As is the case of Chevy's most recent C7 Corvette, these rumors never pan out.
In any case, the idea for a 'Vette with an engine mounted behind the driver can probably all be traced back to a single car, the 1964 XP-819 prototype. Built as an "engineering exercise" back in 1964, the prototype was designed with a rear-mounted engine. History tells us that the idea of a rear-engine Corvette fizzled, and the XP-819 was eventually cut up into pieces and stored at a shop in Daytona Beach, FL.
After sitting for untold years, a restoration project started on the car, and while it isn't yet fully completed, the current owner of the car, Mid America Motorworks, will have the car on display at the 2013 Amelia Island Concours d'Elegance as a "driveable chassis" with hopes of having a fully completed car ready to bring to next year's show.

BMW, Hyundai score big in JD Power's first Tech Experience Index

While automakers are quick to brag about winning a JD Power Initial Quality Study award, the reality, as we've pointed out before, is that these ratings are somewhat misleading, since IQS doesn't necessarily distinguish genuine quality issues. JD Power's new Tech Experience Index aims to solve that problem. The new metric takes the same 90-day approach as IQS but focuses exclusively on technology – collision protection, comfort and convenience, driving assistance, entertainment and connectivity, navigation, and smartphone mirroring. It splits the industry up into just seven segments, based loosely on size, which is why the Chevrolet Camaro is in the same division (mid-size) as Kia Sorento and the Mercedes-Benz GLE-Class is in the same segment as the Hyundai Genesis (mid-size premium). It makes for some screwy bedfellows, to be sure. Still, splitting tech experience away from initial quality should allow customers to make more informed and intelligent decisions when buying new vehicles. In the inaugural study, respondents listed BMW and Hyundai as the big winners, with two segment awards – the 2 Series for small premium and the 4 Series for compact premium, and the Genesis for mid-size premium and Tucson for small segment. The Chevrolet Camaro (midsize), Kia Forte (compact), and Nissan Maxima (large) scored individual wins. Ford also had a surprising hit with the Lincoln MKC, which ranked third in the compact premium segment behind the 4 Series and Lexus IS. This is a coup for the Blue Oval, whose woeful MyFord Touch systems made the brand a victim of the IQS' flaws in the early 2010s. But Ford and other automakers might not want to celebrate just yet. According to JD Power, there's still a lot of room for improvement – navigation systems were the lowest-rated piece of tech in the study. Instead, customers repeatedly saluted collision-avoidance and safety systems, giving the category the best marks of the study and listing blind-spot monitoring and backup cameras as two must-have features – 96 percent of respondents said they wanted those two systems in their next vehicle. But this isn't really a surprise. Implementation of safety systems from brand to brand is similar, and they don't require any input from users, unlike navigation and infotainment systems which are frustratingly deep.