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GMC Hummer EV will weigh 9,046 pounds

In the 2000s, Hummer's unique breed of off-roaders summoned a dark cloud of disapproval from environmentalists because they were gas-guzzling SUVs with mammoth dimensions. GMC's born-again Hummer EV will escape the gas guzzler label by running solely on electricity, but it will be even bigger and much heavier than its predecessors. Enthusiast site GM-Trucks reported the Hummer EV will tip the scale at 9,046 pounds (4,103 kilos if you're outside of the United States) in its quickest configuration, and a GMC spokesperson told Autoblog that figure is accurate. For context, the H1 Alpha released for 2006 (and often considered the ultimate Hummer) weighed 8,113 pounds, the H2 checked in at 6,614 pounds with the 6.2-liter V8, and the H3 was comparatively light at 4,600 pounds. When it lands, the Hummer EV will be one of the heaviest new cars sold in the United States. Part of its plumpness can be attributed to its colossal dimensions; it measures 216.8 inches long, 86.7 inches wide, and 81.1 inches tall. In comparison, the H1 stretched 185 inches long, 87 inches wide, and about 78 inches tall. The electric powertrain also played a major role in slinging the Hummer's weight into dually pickup territory. Batteries are heavy, and the Hummer EV's Ultium pack reportedly has a capacity of over 200 kilowatt hours. It has three electric motors, too. Note the 9,046-pound figure applies only to the sold-out Launch Edition model, which will offer 1,000 horsepower, the aforementioned 200-kilowatt battery, and the supercar-like ability to hit 60 mph from a stop in three seconds. GMC will launch cheaper, slower, and presumably considerably lighter variants of the truck in the early 2020s. Although SUVs are often heavier than comparable trucks due to the additional sheet metal, the people-hauling Hummer should weigh less than the cargo-carrying variant. As we reported in April 2021, its output will be limited to 830 horsepower because it's 20 inches shorter than the truck, and the bigger battery pack doesn't fit in this footprint.

Fullsize GM SUVs have a problem that's making owners sick

Some fullsize SUV owners are getting sick, thanks to a buffeting and vibration problem in 2015 model year examples of the Chevy Tahoe and Suburban, Cadillac Escalade, and GMC Yukon. According to owners' complaints to the National Highway Traffic Safety Administration, the issue can vary from an annoying vibration inside the cabin to an experience so severe that it leads to dizziness and headaches. General Motors is aware of the complaints, but the fix isn't so simple. According to spokesperson Tom Wilkinson to Autoblog, the company "has been tracking this issue for a while." The problem has a fairly low incidence rate, but when it does occur the issue can be "uncomfortable and annoying for owners." There's no precise cause for the issue, Wilkinson claims, and in some cases, simply balancing the tires or changing the door seals can make it go away. However, not all of the fixes are so simple. AutoGuide dug deep into the problem and discovered a GM preliminary information bulletin that advised dealers to remove the headliner and to check the roof's bonds to the bows that go across the vehicle. However, that document included a note that the solution might not entirely eliminate things. According to AutoGuide, adding Dynamat insulation to the roof sometimes helped the problem. A GM spokesperson also told AutoGuide the company fixed the problem at the end of the 2015 model year, and didn't go into any more detail. This roof issue seems linked to some of the worst droning in these SUVs. According to one complaint from a 2015 Suburban owner to NHTSA: "Roof will not remain attached to the roof bows. This causes the buffeting similar to a window being down when all are up. The results span from annoying to painful." A 2015 Yukon owner claims to have another alleged cause for the problem in a NHTSA complaint from February 2015. This person brought their SUV to the dealer seven times over the course of four weeks for vibrations. The dealer replaced the driveshaft, suspension components, and more, but nothing worked. According to an engineer to the service adviser: "In an effort to prevent roll overs, they designed the frame and body mounts too stiff. There are 40 engineers working on issues, they have no solutions that work across the board." Wilkinson told Autoblog that GM is working with customers on an individual basis to rectify things. Since these are newer vehicles, dealers should also fix the problem under warranty.

Pics Aplenty: Meet the 2014 Chevrolet Silverado and GMC Sierra [w/poll]

Today was a pretty big day for General Motors, debuting the all-new Chevrolet Silverado and GMC Sierra light-duty pickup trucks ahead of their official showcase at the 2013 Detroit Auto Show. And now that the dust has settled at GM's big reveal event, we've had a chance to snap dozens of photos of the new pickup pair from every angle.
We already told you the important bits earlier today (click here in case you missed it), but let's recap. Under the hood are three new engines - a 4.3-liter V6, 5.3-liter V8 and 6.2-liter V8 (you know, a version of the small-block that'll also be found under the hood of the C7 Corvette), all mated to six-speed automatic transmissions. The 2014 model year marks the return of the Z71 off-road package with Rancho shocks, front tow hooks and beefier underbody protection. Inside, there's a host of new technology and a greater focus on better quality and refinement.
Some of the nitty-gritty specifics (like engine output numbers and fuel economy) have yet to be revealed, and since we haven't driven the finished products yet, it's hard to say how these trucks will fare against rivals like the Ram 1500 and Ford F-150. For now, we can only judge these two books by their covers, and while we do like the designs of the new trucks, we Autoblog staffers are torn on exactly which one looks best.