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GM recalls select Tahoes, Yukons, Escalades for rear driveshaft issue

GM is recalling a number of its full-size SUVs due to an issue with the rear driveshaft assembly that could ultimately result in driveshaft failure. The actual number of total vehicles involved in the recall is small at just 1,789, but it’s spread out across the entire 2021 model year full-size GM vehicle lineup. That means a small number of every model is being recalled, including the Chevrolet Tahoe, Suburban, GMC Yukon, Yukon XL and the Cadillac Escalade and Escalade ESV. GM traced the issue back to certain driveshaft assemblies with ball bearings that were not properly heat treated. If theyÂ’re not properly heat treated, GM says that the balls may deform over time, causing noise and vibration. Continue to drive in this condition, and GM says the affected joint in the driveshaft assembly could seize, causing loss of drive power. However, the problem wonÂ’t present itself all at once, as GM says there will be a gradual increase of noises and vibrations before total failure. For those few owners with affected vehicles, GM says that it will replace the left and right rear driveshaft assemblies with properly-built units. Per usual with recalls, this will be done at your local dealership at no cost to the owner. If you have one of the recalled SUVs, expect to be notified mid-March. Related video:

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.

2023 GMC Canyon revealed with new ZR2-based AT4X trim

Following up on the reveal of its twin, the Chevy Colorado, the 2023 GMC Canyon has made its appearance. Naturally, it shares much with the Chevy pickup, but GMC has gone to greater lengths to differentiate the truck. It comes standard with the high-output engine, all versions feature the wide-track suspension setup, and in addition to the now more luxurious Denali, there's a ZR2-based AT4X trim. As with the new Colorado, the Canyon gets an overhaul of the design. It's down to one bed and cab configuration (short-bed, crew cab), and it features a longer wheelbase with the front axle pushed forward. The Canyon does get a variety of unique design features, though. It has its own front fascia with a tall, rectangular grille. LED lighting is standard on all Canyon models all the way around. That includes the unique fender lights like those found on the Sierra HD. All Canyons also feature the wide-track off-road suspension like the Colorado Z71 and Trail Boss. There are no narrow-track, narrow-body versions, even on the base two-wheel-drive Elevation. That suspension also means all Canyons have a roughly two-inch lift over base Chevy Colorados. The GMCs also get standard 32-inch tires, and they don't feature a front air dam in order to provide better approach angles. The bed, while only available in one trim, is available with a unique storage bin in the tailgate. On the topic of suspension specs, the Elevation and AT4 trim levels have 9.6 inches of ground clearance. The Denali increases that to 10.5 inches, and the AT4X features 10.6 inches. It also picks up the Multimatic spool-valve shocks from the ZR2. But we'll talk more about what comes on the AT4X in a bit. Under the hood of the Canyon is just one engine. It gets the highest-output version of the 2.7-liter turbocharged four-cylinder. The engine makes 310 horsepower and 430 pound-feet of torque. The only transmission is an eight-speed automatic. Two-wheel drive comes standard on Elevation, and other trims come standard with four-wheel drive. The inside of the Canyon is very similar to the Colorado, but it has some unique cues. It has air vents that are more integrated into the squared-off dashboard design, rather than the Chevy's round vents. It has a differently shaped dash pad and trim surrounds, too. The really big differences come on the Denali and AT4X trims, though. The Denali features real wood trim with laser etchings. It also gets lots of real leather and fancy stitching.