2018 Gmc Sierra 1500 Sle on 2040-cars

Auto blog

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.

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.

No carbon fiber was harmed in the making of new 2015 GMC Sierra Carbon Edition

Carbon fiber is known for its properties of combining amazing strength with extremely low weight, and its frequent use in high performance vehicles gives the material a somewhat aggressive air. GMC is hoping to play on some of that mean reputation with its upcoming trio of Sierra Carbon Editions. However, despite their name, there's no actual carbon making its way onto these trucks (at least in the form of CF). Instead, the special edition is a graphics package with some extra equipment thrown in.
All three specials are based on the 2015 Sierra 1500 and can be ordered in two- or four-wheel drive configuration and with the standard 4.3-liter V6 or optional 5.3-liter V8. Things kick off with the standard Sierra Carbon Edition for $33,075, including destination, available only on the double cab body. Buyers get a black grille, carbon fiber decals on the hood and tailgate and body color trim for the door handles and mirror caps. The edition also adds keyless entry, a 110-volt outlet and LED cargo box lighting.
Buyers wanting just a touch more style can opt for the Carbon 20 Edition on the SLE double cab that gets the same exterior tweaks, plus 20-inch aluminum wheels, and retails for $38,275. Finally, there is the Carbon 22 Edition starting at $42,270 on the SLE in double- or crew cab models. It adds further black 22-inch wheels, tubular side steps, fog lights, keyless start, a universal home remote, dual-zone climate control and 110-volt outlet.