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GM's fullsize SUVs boost highway mileage by nearly 10 percent

We met the redesigned 2015 versions of the Chevrolet Suburban and Tahoe, and the GMC Yukon and Yukon XL at the 2013 LA Auto Show. Improved gas mileage numbers have been announced to go along with the improved exteriors and interiors, with city mileage improving by seven percent and highway mileage going up by nearly ten percent; you'll now get 16 miles per gallon in the city and 23 on the highway.
The only applies to models with the 5.3-liter engine, though, not the premium Yukon Denali and Yukon XL Denali SUVs with the 6.2-liter motor. Still, the 5.3 gets you more power than previously, with 355 horsepower and 383 pound-feet of torque underfoot, on top of the improved fuel economy numbers. The 6.2-liter sticks with official mpg ratings of 15 highway, 21 city. There's a brief press release below with words straight from the horse's mouth.

GMC unveiling 2021 Yukon, Yukon XL on January 14

UPDATE: We received a reply back from a representative at GMC confirming that the new Yukon will be revealed on January 14. The text has been updated to reflect this. General Motors is renewing its body-on-frame SUVs, and GMC's Yukon is next in line to receive a full makeover. It's scheduled to break cover on January 14 alongside the long-wheelbase Yukon XL. It's reasonable to assume we would have gotten our first glimpse at the next Yukon during the 2020 Detroit Auto Show had the event not moved to June. The new date is too close to the model's on-sale date, so GMC will unveil it during a standalone event held in Vail, Colorado, according to GM Authority. We reached out to GMC, and a representative confirmed that is indeed the reveal date for the full-size SUV. Spy shots suggest stylists took GMC's two biggest SUVs in a sharper, bolder direction. Both models share the same front end, which borrows styling cues like C-shaped headlights from the Sierra pickup. Brand-specific rear lights help the Yukon models stand out from their Chevrolet-badged siblings, the Tahoe and the Suburban, which hasn't always been the case. The standard Yukon and the Yukon XL will each grow in size, though there's no indication GMC's naming structure will change to reflect that; Yukon XXL admittedly doesn't have much of a ring to it. While we haven't seen the interior yet, we expect it's getting a generous serving of technology, including a new, touchscreen-based infotainment system. The larger exterior dimensions will clear up more space for people and gear, so average-sized adults will be able to fit in the third-row seats. The range-topping Denali variants of both models will return to satisfy those who crave sumptuousness. The sheet metal will hide much of the same hardware found under the Tahoe/Suburban duo, including an independent rear suspension added in the name of comfort and handling. Powertrain specifications should carry over, too, meaning the entry-level engine will be a 5.3-liter V8 rated at 355 horsepower and 383 pound-feet of torque. The list of options will include a 6.2-liter V8 with 420 horsepower on tap, and we're betting the straight-six turbodiesel available on the Bowtie-badged SUVs will also be offered at an extra cost. Rear-wheel drive and a 10-speed automatic transmission will come standard, and buyers will be able to pay extra for four-wheel drive. The next GMC Yukon and Yukon XL will go on sale halfway through 2020 as 2021 models.

2022 GMC Sierra spotted with minimal camouflage

By all accounts, GM's current full-size truck twins, the Chevrolet Silverado and GMC Sierra, are good trucks that are in many ways competitive with the sales-leading Ford F-150 and a fresh Ram 1500 that's regularly nipping at the Bowtied truck's tailgate. Considering the cashflow generated by the segment, though, it's no surprise to see a refreshed version of the GMC Sierra testing with some light camouflage hiding some of the upgraded bits and pieces. We'll get to what we can see in just a moment, but first we'll point out what we can't see in these spy shots. What the GM pair really needs is a competitive interior. The current Silverado and Sierra are bridled by dashboards, door panels and instrument clusters that simply aren't good enough when compared to their Ram and Ford competitors. We've spoken with a few designers from GM, and they are well aware of the criticisms that have been levied at their full-size truck duo, so we'd be shocked if there wasn't a heavily revised interior lurking for the trucks' next refresh. Hopefully a future set of spy photos will give us a better look at what's inside, because from this far-away, through-the-windshield look doesn't give us much information. Will the Sierra share an interior with the redesigned Yukon? We'll just have to wait and see, but suffice it to say that any improvement will be welcome. Moving to the exterior, we can clearly see that the blocky, angular look of the current Sierra will continue through this refresh. A tiny look through the heavy tarp covering the truck's face reveals a black plastic mesh grille, but we're sure there's plenty of chrome hiding under there, too. We're left to wonder if that opening allows for a camera or radar to peek through, but rumors suggest GM's well-regarded Super Cruise could be on the menu within the next few years. We have no idea what's under this test truck's hood, but we wouldn't imagine there will be much change to the current truck's solid list of powertrain options. Here's hoping the 3.0-liter Duramax inline-six diesel engine gets the cooling it needs to raise its tow rating to match its class-leading efficiency, because it's arguably otherwise the best light-duty diesel offering in America. We know the automaker is working on electric powertrains, too, but we expect to see those debut first in the Hummer-branded truck that will be sold in GMC dealerships.