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5 things we love about the 2019 GMC Sierra AT4

NEW YORK — The 2019 GMC Sierra AT4 proves that GM's upmarket truck and SUV brand is getting serious about offering rough-and-tumble capability to rival the Ford F-150, Toyota Tundra, Ram 1500 and Nissan Titan. Until the Sierra AT4 rolled onstage at a media event in lower Manhattan, prior to this year's New York Auto Show, the GMC brand had been more focused on luxury touches like fancy chrome wheels and posh interiors — no surprise, considering the upscale SLT and Denali trim levels account for the vast majority of GMC sales. So now GMC wants to get muddy and adventurous? Well, yes and no. The AT4 adds hardware that'll take truck buyers off the beaten path, though this GMC isn't anywhere close to being a Spartan, no-frills work truck. To better explain, let's look at five key features we love about the 2019 GMC Sierra AT4: More than stickers and chrome The Sierra AT4 isn't a cynical marketing ploy, there is some true all-terrain toughness built into this pickup truck. A factory-installed lift kit raises the AT4 by two inches, while Rancho monotube shocks, a locking rear differential, a two-speed transfer case and standard all-wheel drive prove this GMC can dare to venture off paved surfaces — though you might risk getting mud and muck on the truck's handsome 18- or 20-inch alloy wheels. Power and economy The Sierra AT4 comes standard with a 5.3-liter V8 coupled to an eight-speed automatic transmission. In the standard Sierra 1500, this engine produces 355 horsepower. GMC didn't mention engine specs here in New York, though it's possible the AT4 might get a small power bump. This engine should be plenty for most truck buyers, though GMC offers two tempting alternatives. These include a turbo-diesel 3.0-liter inline-six, along with a 6.2-liter V8. Both motors are paired to stop-start fuel-saving systems, along with a new 10-speed automatic transmission. Carbon fiber cool factor The GMC Sierra's available carbon-fiber cargo bed, called CarbonPro in GMC-speak, trims 62 pounds of weight, as compared to a traditional all-steel bed. This slick feature uses carbon composites for interior panels and, judging from GMC's videos of burly bricks and huge hammers being thrown into a CarbonPro cargo bed, it should prove more than up to the task of ... well, having someone throw bricks and hammers into the cargo area.

GM warning 800,000 owners that their cars may need oil changes more frequently than they say

The days of changing your engine oil every 3,000 miles are long gone thanks to most cars having automatic oil monitoring systems, but about 800,000 General Motors vehicles apparently have incorrect monitoring software that is leading to premature engine component wear. According to Autoweek, certain 2010-2012 Buick LaCrosse, Regal, Chevrolet Equinox and GMC Terrain models equipped with 2.4-liter four-cylinder engines could be going too long in between oil changes resulting in a higher-than-normal number of warranty claims for the engine's balance chain. The balance chain links the balance shaft to the crankshaft, and a worn one can produce higher noise levels.
As a fix, GM dealers will be reprogramming the software for the monitors in an effort to reduce the interval between oil changes, which varies based on driving habits and conditions. Through February 2015, the software update will be done at no cost to vehicle owners, but since this is not a recall, after that point, it will be up to the discretion of dealers as to whether or not they will charge for the service. What isn't immediately clear is whether GM plans on giving assistance to out-of-warranty customers who are experiencing engine issues from the worn chain.

GMC teases rugged 2021 Canyon AT4 pickup

GMC promised every model in its lineup would get the AT4 treatment by 2021. Having introduced AT4 versions of the Sierra, Acadia and Sierra HD already, that leaves the Canyon, Terrain and Yukon waiting their turn for the procedure. During a press even for the Sierra HD in Jackson Hole, Wyoming, GMC teased Canyon AT4 as next in line to receive upgraded off-road chops. The automaker had a camo'ed prototype Canyon AT4 in a trailer hooked up to a Sierra HD. When Sierra occupants pulled up the feed from the trailer-mounted camera on the infotainment screen, said occupants got a view of the masked midsize pickup between two walls reading, "The first ever Canyon AT4" and "Coming early 2020." The main mysteries are how extensive the pickup's AT4 transformation will be, and when it will go on sale. The AT4 kit changes depending on model. The Sierra AT4 upgraded performance and looks, with features like a two-speed transfer case, locking rear differential, a two-inch lift and Rancho monotube shock absorbers, skid plating, black-chrome grille and body-colored grill surround. The 2020 Acadia AT4 is mostly about looks, pairing standard all-wheel drive with black trim and wheels, and all-terrain tires. The Canyon's expected to weigh in on the Sierra end of the overhaul, and slide into the lineup between the SLT and top-tier Denali trims. The mods will put it beyond the current All Terrain trim being phased out across the lineup, but leave space between the Canyon AT4 and its Chevrolet sibling, the Colorado ZR2. GMC VP Duncan Aldred said, "They’re going to have different capability levels. The ZR2 is extreme capability. AT4 isnÂ’t positioned as extremeÂ… not intended to rival the ZR2." And the Colorado gets the even chunkier Bison version on top of that. The Canyon AT4 is predicted to join the lineup for the 2021 model year, so although it's "coming early 2020," it might not go on sale until much later in the year. GM's midsized pickup twins will be endowed with changes so mild that neither brand will classify the work with the term "midcycle enhancement." Figure a refining around the grille and lights and a few minor fillips otherwise. Next-generation models of the Canyon and Colorado aren't due until 2023, and there's apparently debate inside GM about an interior refresh for both trucks before then. The Terrain should mirror changes to the Acadia, and it would be a pleasant surprise to see the all-new Yukon also due in early 2020 get serious off-road teeth.