1989 Gmc Sierra 3500 Supervac Model 343-g on 2040-cars

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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 Sierra electric pickup previewed, will launch in Denali trim

An electric GMC Sierra Denali is coming, and this is our first look at the fully-electric pickup truck. It’ll be the second electric pickup from GMC, following the Hummer EV pickup that is about to launch. GMC didnÂ’t reveal much about the EV, but it did say that the electric Sierra will launch exclusively in Denali trim. That means you shouldnÂ’t expect to buy any cheaper versions of the truck in the immediate future. Denali is extremely popular among GMC buyers, though, so this being the exclusive offering probably wonÂ’t hurt GMCÂ’s sales prospects too badly. Beyond the trim, GMC also says the truck will be built on the Ultium platform, which is a given these days for new electric GM vehicles. As for the image and teaser video (see the video below), GMC gives us a fairly clear view of what the electric SierraÂ’s front end will look like. This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings. ItÂ’s no surprise to see the “grille” has been transformed into a shield of sorts. That shield is then flanked by a pair of giant LEDs that wrap around the edges of the top front corner. The turn signals are also previewed, as they blink in three-dot fashion on the front bumper. We can also see some fairly aggressive hood sculpting shrouded in shadow. And thatÂ’s about it. GMC says the electric Sierra will be fully revealed next year, but doesnÂ’t provide an exact date. We already know the electric Silverado is coming to CES in January, though, so we suspect many questions about the GMC version will be answered then. When the electric Sierra does come out, GM says it will be producing them at its assembly plant in Detroit and Hamtramck, MI. Related video: This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings.

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.