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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.

Buick celebrates 110 years by naming most significant model of each decade

In May of 1903, Buick began work on its first vehicle, the 1904 Model B, the first example of which was sold to a doctor in Flint, Michigan. That first sale was appropriate since later on, Buick became known as a "doctor's car." The Model B is the first of 11 cars chosen by Buick to highlight each decade of the company's 110-year history.
The 1916 D-45 Touring with a six-cylinder engine was Buick's highest seller that year, and helped push overall sales past six figures for the first time, making Buick the top-selling automotive brand. In 1931, Series 50 got an eight-cylinder engine, which helped the company survive the Great Depression. The 1936 Century was the first Buick that could hit 100 miles per hour, the 1949 Roadmaster had a supporting role in Rain Man, the 1953 Skylark had Italian wire wheels and the owner's name engraved on its steering wheel.
Then we have the iconic 1963 Riviera, the V6-powered 1975 Regal, and in 1987, the legendary GNX. With a turbocharged, intercooled V6 pumping out 276-horsepower it could hit 60 mph in just 4.6 seconds. In 1999 Buick built the first car in China, the Century, and that country remains the brand's largest market.

GM issues four new recalls, 2.4 million cars affected

General Motors has announced another set of recalls, covering some 2.42 million cars in the United States. For those keeping track, The General has now recalled over 15 million cars worldwide this year due to various issues.
Here's the breakdown for this most recent set of recalls:
1,339,355 - Buick Enclave, Chevrolet Traverse, GMC Acadia models from the 2009 to 2014 model years; Saturn Outlook models from the 2009 to 2010 model years