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What the electric Hummer's size and weight means for its efficiency

The 2022 GMC Hummer EV Edition 1. Tim Levin/Insider If you think driving a pint-sized Nissan Leaf is as good for the planet as driving a huge electric Hummer, think again.  The GMC Hummer EV uses significantly more electricity than other EVs, meaning it produces more pollution upstream.  The electric Hummer weighs 9,000 pounds and its battery weighs as much as a Honda Civic. The new electric Hummer rolls through town without a deafening engine rumble or a cloud of toxic fumes, but it doesn't exactly tread lightly.  The colossal truck weighs an astonishing 9,000 pounds. (Think two Toyota Tacomas, three Honda Civics, or 24 Shaquille O'Neals.) Moreover, the GMC Hummer EV is in many ways a supersized gas guzzler for a new era. It repackages many of the same flaws of hulking SUVs and trucks of years past — and proves not all zero-emission cars are created equal. EVs can be energy guzzlers too On the whole, electric cars use less energy than gas-powered ones. But they aren't all equally efficient.  No surprise here: The Hummer needs more electricity than any other EV on the market to move its elephantine frame. The Environmental Protection Agency rates the pickup at 47 MPGe (miles per gallon of gasoline-equivalent). For comparison, the Tesla Model 3 sedan is nearly three times as efficient, earning a rating of 132 MPGe. The Ford F-150 Lightning, another electric truck, gets 70 MPGe.  This has real consequences: Since the US gets 61% of its energy from oil, coal, and natural gas, the more electricity a car needs, the more pollution it creates upstream.  As the Union of Concerned Scientists put it: "Both EV cars and trucks are much cleaner than their gasoline counterparts, but electric trucks are responsible for more global warming emissions than electric cars simply because trucks are larger and heavier."  The 2022 GMC Hummer EV Edition 1. Tim Levin/Insider The Hummer EV is also resource-intensive to manufacture, requiring a ginormous (and weighty) battery to give people the 300-plus miles of range they desire. You could produce three Chevrolet Bolts with the same battery cells consumed by one Hummer.

2019 GMC Sierra Denali First Drive Review | The more things change...

ST. JOHN'S, Newfoundland — Canadians love their GMCs. Both anecdotal and statistical evidence supports this. In certain areas of Canada, the Sierra outsells the Chevy Silverado. But in this area of Canada, Cape Spear, the morning fog and salt air are thick. This is the most eastern point in Canada, and the most eastern point of North America if you don't count Greenland. We woke up early and drove to the coast in the new 2019 GMC Sierra Denali, hoping to catch what was promised to be an absolutely spectacular sunrise. The sunrise was a no-go thanks to the fog, turning the sky into a grey mist that melted into the Atlantic. Still, if the world had an edge, this is what it would look like. Driving in an inspiring place like this invites introspection, and since we're in an GMC Sierra, why not examine the brand's place in the world? Recall that for years, a GMC showroom was just packed with slightly more expensive versions of other GM products. Badge engineering, if you will – a dirty word in our business, applied to such notable machines as the Cadillac Cimarron, Buick Terraza, Chevy Aveo and Saab 9-7X. Things, at least on the surface, seem to be changing. GMC says it's making a concerted effort to differentiate its product portfolio from the rest of GM, but the results have been mixed. The brands were supposed to have less product crossover. There's no GMC version of the Chevy Traverse and, initially, there was no Chevy equivalent of the GMC Acadia, though the new Blazer kills that advantage. The Equinox and Terrain are still basically the same vehicle, as are the new 2019 Silverado and 2019 Sierra. At least the two trucks look decidedly different. There's still a family resemblance, but most of the bodywork has been changed. Where the 2019 Silverado adopted some curves, the Sierra stuck with straight lines. Compare things like the headlights, wheel wells and doors. The Sierra still has a massive grille and — aside from the AT4 off-road trim — packs on as much chrome as a 1958 Cadillac, but that's what customers want these days. The Ford F-150 and Ram 1500 are no different in this regard, packing lots of chrome, hard edges, and frontal areas that would give passenger trains a run for their money. At first glance, you'd be hard pressed to tell the Sierra and Silverado's interiors apart from both each other and the outgoing models. It's basically the same design, though the Sierra makes do with some slightly nicer materials.

GM recalls 3.6 million vehicles for airbag-software problems

The Basics: General Motors is recalling 3.64 million vehicles across its lineup for an airbag-related issue. The recall covers the 2014-2015 Buick LaCrosse, Chevrolet SS, and Spark EV; 2014-2017 Chevrolet Corvette, Trax, Caprice PPV, Silverado 1500, Buick Encore, and GMC Sierra 1500; and 2015-2017 Chevrolet Tahoe, Suburban, Silverado HD, GMC Yukon, Yukon XL, Sierra HD, Cadillac Escalade, and Escalade ESV. The Problem: Affected vehicles have a sensing and diagnostic module that controls the airbags and seat-belt pretensioners. The software it uses has a defect that can prompt the module to run a diagnostic test under specific driving conditions, which will also deactivate the front airbags and pretensioners. This means that it would be possible for those safety systems to not activate in a crash, potentially leading to injury or death. Injuries/Deaths: General Motors began an investigation that led to the recall after a 2014 Silverado was involved in a crash in which the airbags did not deploy. No information was given as to injuries or deaths. The Fix: Owners can bring their vehicles to a local General Motors dealer where a software update will be installed to fix the issue. The fix will be free of charge. If you own one: General Motors will contact owners of affected cars, and owners can check whether their vehicles are affected by visiting entering their vehicle identification numbers at either the GM Owner Center website or the NHTSA website. Owners can then schedule a time to have the update installed. Related Video: