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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

Chevrolet Bolt EV Concept foreshadows an affordable, 200-mile EV future [w/videos]

Confirming numerous reports and rumors, Chevrolet introduced the Bolt EV Concept, "a vision" of a 200-mile EV with an entry price of around $30,000. Those lofty promises ride atop a funky crossover that made its global debut at the 2015 Detroit Auto Show. The orange five door features a spacious greenhouse, complemented by a glass roof and thin D-pillar. A narrow grille and slim LED headlights crown a high fascia that leaves little ahead of its front axle. It's a similar story in back, as General Motors' design boss Ed Welburn sought to limit overhangs and maintain the Bolt's small footprint. "Form and function have never meshed so well together," Welburn said. "No compromises were made when it came to aesthetics and the elements that contribute to the Bolt EV concept's range, resulting in a unique proportion that's sleek, efficient and obviously a Chevrolet." The cabin is not unlike current Chevrolet compacts, with the MyLink touchscreen and a detached instrument cluster dominating the sparse dash. Unlike cars like the Sonic, which features a similar design for its instrument cluster, A Volt-like display is found over the steering column. "The Bolt EV concept is a game-changing electric vehicle designed for attainability, not exclusivity," CEO Mary Barra said. "Chevrolet believes electrification is a pillar of future transportation and needs to be affordable for a wider segment of customers." Take a look at both the official gallery of Bolt images, as well as our live shots. And then scroll on down for more comments from GM brass, in the official press release. Chevrolet Bolt EV Concept Signals Brand's EV Strategy Affordable, long-range concept builds on brand's electrification leadership 2015-01-12 DETROIT – Chevrolet today made a significant statement on its commitment to electrification with the introduction of the Bolt EV concept – a vision for an affordable, long-range all-electric vehicle designed to offer more than 200 miles of range starting around $30,000. "The Bolt EV concept is a game-changing electric vehicle designed for attainability, not exclusivity," said General Motors CEO Mary Barra. "Chevrolet believes electrification is a pillar of future transportation and needs to be affordable for a wider segment of customers." Leveraging the electrification prowess established by Volt and Spark EV, the Bolt EV concept is designed to offer long-range performance in all 50 states and many global markets.

A Chevy Camaro hybrid? That's what EcoCAR3 could bring

Figuring out a way for a hybrid powertrain to co-exist with the performance expectations of a classic American muscle car is a challenge that could vex that most experienced of automotive engineers. It's a challenge, in fact, being handed to a bunch of college students. Over the next four years, students from 16 North American colleges and universities will attempt to wring fuel efficiency from a 2016 Chevy Camaro as part of EcoCAR3, an advanced-vehicle technology competition sponsored by the Department of Energy, General Motors and others. They'll be attempting to use hybrid or plug-in hybrid technology while not sacrificing the performance of the Camaro, which was selected in part because the current model achieves just 17 miles per gallon in city driving and 28 MPGs on the highway, per EPA numbers. Students will get the latest version of the vehicle to work on, one that is expected to be unveiled next month on Belle Isle in Detroit. "If we still want to produce V8 Camaros, we're going to have to look at alternative methods of propulsion," said Al Oppenheiser, the chief engineer on the Camaro. "So the ideas that these college teams come up with could very easily be adapted to a car like the Camaro." Unlike similar competitions that reward fuel efficiency in vehicles, EcoCAR seeks those gains while emphasizing cost and consumer acceptance of these vehicles. The cars shouldn't look like experiments; they should look like everyday vehicles on the road. Previous competitions have allowed the teams to use whatever powertrain they desired. This time, EcoCAR officials designed the competition to concentrate on hybrid, hybrid-electric and diesel options. Competitors won't have the option of using hydrogen fuel cells as they have in the past. Last year, a team from Colorado State built a vehicle that contained both hydrogen and electric power sources. This year's limit is a curious choice, as some automakers such as Toyota have placed heavy bets on fuel cells in recent years. General Motors also runs a fuel-cell program. With the focus on cost and practicality, however, the program officials wanted to narrow the framework of the contest. "We always have some good decisions on what to make within the scope or out of scope," said Jim Kolhoff, global director of software engineering for General Motors.