13 Crew Cab 2500 Denali Duramax Diesel 4x4 4wd Nav on 2040-cars

Auto blog

2018 GMC Acadia with 'Christmas Aero' modification gets in the wind tunnel

Tis the season of "Big" - big cheer, big parties, big bowls of eggnog, big decorations, and when it comes to your family hauler, big drag. Festive drivers who festoon their crossovers, minivans, and SUVs with wreaths, Rudolph noses, fuzzy antlers, and rooftop Christmas trees undo the years of work that car engineers devote to fractional gains in fuel economy. To put numbers to such fuel-guzzling madness, GMC started with a 2018 Acadia, optioned it with the Xmas Aero Package - both Standard and Plus versions - put it in Lockheed-Martin's wind tunnel. The resulting dip in fuel economy results probably won't surprise anyone who's used a roof rack - or, for that matter, their car's air conditioning. However, it might surprise you to find out which seemingly substantial decoration had no effect, and which seemingly innocuous decoration was about twice as bad as running the A/C on its Mr. Freeze setting. Check out the brief video above for the results. And consider placement of that bow carefully.

GM recalling 521,817 cars in two campaigns

General Motors is issuing two, separate recalls covering a total of 521,817 vehicles worldwide. The larger campaign covers 468,887 units of the 2011-2012 Chevrolet Malibu. Specifically, 437,045 of these are in the US, and the rest are outside the country. In these sedans, a steel cable that connects the seat belt to the vehicle can fatigue and separate. GM knows of 36 claims about the problem but only one minor injury. According to The Detroit News, this happened when a taxi driver hit his head. To fix things, dealers will replace the "outboard lap mounting bracket," which will move the tensioner rearward. They'll also inspect and if necessary replace the steel cable and lap pretensioner. In the second campaign, 52,930 examples the 2015 Chevy Colorado and 2015 GMC Canyon have seat frame attachment hooks that were installed incorrectly during assembly. GM hasn't received any reports of crashes, injuries, or fatalities about this problem. Dealers will inspect the affected trucks and repair as necessary. GM spokesperson Alan Adler told Autoblog that he didn't yet have a specific date when affected owners would receive official mailings about either of these recalls. GM Statement General Motors is recalling 48,309 2015 model year Chevrolet Colorado and GMC Canyon midsize pickup trucks in the U.S. because certain seat frame attachment hooks were not properly attached to the vehicle body during assembly. Dealers will inspect the potentially affected seats for proper installation and repair if necessary. GM knows of no crashes, injuries or fatalities related to this condition. The total vehicle population of the recall is 52,930 including 4,620 vehicles sold in Canada. General Motors is recalling 437,045, 2011-2012 model year Chevrolet Malibus in the U.S. because the flexible steel cable that connects the safety belt to the vehicle can fatigue and separate over time as a result of occupant movement in the seat. Dealers will replace the outboard lap mounting bracket to relocate the tensioner slightly rearward. Dealers will inspect the cable and, if necessary, replace the lap pretensioner. GM knows of 36 claims, no crashes or fatalities and one minor injury reportedly related to the condition. The total vehicle population of the recall is 468,887 including Canada, Mexico and exports.

The GMC Hummer EV could spawn a smaller electric truck

Over 90,000 motorists have reserved a GMC Hummer EV, and the truck's relative popularity has convinced executives to consider launching a smaller and presumably more affordable model. While nothing is official yet, the Hummer EV's smaller sibling could be a midsize pickup. Citing "people familiar with the matter," Automotive News reported a smaller Hummer EV exists in the design studio that General Motors operates in California. There's no word on what it looks like yet, though it presumably borrows at least some of the rugged-looking styling cues that characterize the controversial, 9,200-pound truck. Interestingly, the smaller model could bring the Hummer name to Europe. It's too early to provide technical specifications. The model hasn't received the proverbial green light for production but Automotive News added that it's a "priority project" and that it has "a good chance of going into production." If and when it does, it's reasonable to assume the truck will use the Ultium battery technology found under the full-size Hummer EV, among other electric models from General Motors. GMC hasn't commented on the report, and it hasn't announced plans to launch a second Hummer-branded electric pickup. If the report is accurate, the baby Hummer is at least a couple of years away from hitting showrooms. First, the Hummer EV SUV will enter production. We've been here before: a downward expansion is exactly how the now-defunct Hummer brand was born. The military-bred H1 spawned the H2 for 2002 and the H3 for 2006. An even smaller off-roader previewed by the 2008 HX concept was planned but ultimately canned. Related video: This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings.