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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.

Why Buick's Encore wasn't a Chevy

Buick is taking a gamble with its 2013 Encore. General Motors' near-luxury brand has enjoyed great success attracting conquest buyers to its larger Enclave crossover, but it has never offered something quite like this small CUV.
Very early signs suggest that the gamble might be working. According to Mark Reuss, President of General Motors, the automaker expected about 1,500 initial orders from its dealers for the Encore, but it's tracking closer to 9,000 units. Alluding to the fact that historically, Buick has shared similar products with GM's other brands, Reuss says that Buick dealers are "thrilled to have an exclusive." The automaker already markets almost identical models in other markets as the Opel/Vauxhall Mokka and Chevrolet Trax, but The General's other brands won't offer a twin to the new baby Buick.
The new Encore is based on the Gamma architecture that underpins the Chevrolet Sonic, and it shares the economy car's available turbocharged 1.4-liter four-cylinder engine. With standard front-wheel drive and available all-wheel drive, GM says its Encore will be pitted against competitors like the BMW X1 and Audi Q3, both of which are much more expensive but also much more powerful.

Opel Insignia OPC getting facelift. Will the Buick Regal GS see it, too?

We've seen spy shots of the base Opel Insignia wearing facelifted front and rear ends, and now it appears that the more potent OPC version will be benefitting from a nip/tuck, as well.
The front bumper has been redesigned, incorporating new air intakes - toned-down versions of the model's signature fangs - as well as a new grille. Out back, there will be minimal changes to the overall fascia, most likely stuff like slightly redesigned taillamps, and inside, these spy shots show a larger navigation/infotainment screen sitting atop the center console.
This is all well and good for the Insignia, but we're wondering how these changes will impact North America's Buick Regal GS. No, it may not share the same powertrain punch as the Euro-spec OPC, but visually, the cars are nearly identical. When questioned about possible changes for the GS, a Buick spokesperson told us that the automaker "can't comment" on any changes at this point. Even so, we wouldn't be surprised if some small changes come our way in the next year or so.