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GM recalling 686k Lambda-platform models for hatch repair

General Motors is recalling 686,287 units of its Lambda platform crossovers. On models equipped with a power rear hatch the system can potentially fail. This campaign includes the 2008-2012 Buick Enclave, 2009-2012 Chevrolet Traverse, 2007-2012 GMC Acadia, and 2007-2010 Saturn Outlook. According to GM's documents to the National Highway Traffic Safety Administration (as a PDF), dirt can get into a portion of the strut that holds up the hatch and cause the part to prematurely fail. There's a redundancy in place called the Prop Rod Recovery system that's designed to shut the liftgate if there's a malfunction. However, if the breakdown happens too quickly after the hatch is opened the prop rod might not work the way it's supposed to. If someone were in the way of the falling liftgate, they could be hurt. For the repair, dealers will update the software for the power liftgate actuator motor control unit to prevent the hatch from closing so quickly. They'll also check the operation of the system afterward. Related Video: RECALL Subject : Liftgate Struts may Fail and Liftgate may Fall Report Receipt Date: JUN 30, 2015 NHTSA Campaign Number: 15V415000 Component(s): STRUCTURE Potential Number of Units Affected: 686,287 All Products Associated with this Recall Vehicle Make Model Model Year(s) BUICK ENCLAVE 2008-2012 CHEVROLET TRAVERSE 2009-2012 GMC ACADIA 2007-2012 SATURN OUTLOOK 2007-2010 Details Manufacturer: General Motors LLC SUMMARY: General Motors LLC (GM) is recalling certain model year 2008-2012 Buick Enclave vehicles manufactured January 3, 2007, to February 29, 2012, 2009-2012 Chevrolet Traverse vehicles manufactured July 6, 2008, to February 29, 2012, 2007-2012 GMC Acadia vehicles manufactured September 15, 2006, to February 29, 2012, and 2007-2010 Saturn Outlook vehicles manufactured August 17, 2006, to March 18, 2010. The affected vehicles, equipped with the power liftgate option, have gas struts that hold the power liftgate up when open. These struts may prematurely wear and the open liftgate may suddenly fall. CONSEQUENCE: If the open liftgate unexpectedly falls, it may strike a person, increasing their risk of injury. REMEDY: GM will notify owners, and dealers will update the software for the power liftgate actuator motor control unit so that the motor will prevent the rapid closing of the lift gate, free of charge. The manufacturer has not yet provided a notification schedule.

Next Chevrolet Malibu to have 'groundbreaking,' 'passionate' design

In our First Drive of the Chevrolet Malibu after its redesign in 2013 we wrote, "Chevy has quickly worked up a host of changes for its ever-important midsize sedan, and will be launching this 'there, we fixed it' 2014 Malibu like it's an all-new product." Still, no one cared. The Malibu has been mentioned in eight posts this year, all but two of them dealt with recalls, and one of those two was about a 2011 Malibu university science project. It came up in precisely zero posts from November 2013 to March 2014. That's why, according to a report in Automotive News, Chevrolet honchos are "hustling" to have a new Malibu ready in a year. Mark Reuss, General Motors' head of global product development, said it will have "groundbreaking design" and "groundbreaking technology," and asked investors who were showed a picture of it, "When is the last time you saw a [midsize] car this distinctive and this dramatic from General Motors?" Doubling down on the bullishness, Reuss said, "We've got our act together here on the midsize-car segment." Then, throwing every last chip on the pile, global design head Ed Welburn said the next Malibu's design will "make a significant statement" with "a very passionate design." Based on the number of comments Malibu posts get, we figure a fair few number of you would love for this to be the case; yet this is a lot of braggadocio to slather on a car that probably hasn't made "a significant statement" since Elton John had a number one record with Honky Chateau. That was 1972, if you're trying to remember. No matter the looks, the AN report says the new 'Bu will make a profit statement, selling for more money while costing less to produce. Alongside the Cruze, GM figures the pair will bring in an extra $800 million in variable profit in 2016. Which, in case it ends up being another 'butterface,' isn't bad for a silver lining. Featured Gallery 2014 Chevrolet Malibu: First Drive View 36 Photos News Source: Automotive New - sub. req. Design/Style Chevrolet GM Sedan

'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).