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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.

Callaway debuts its new C7 Stingray at National Corvette Museum

Callaway showed off its first tuned version of the 2014 Corvette Stingray at the National Corvette Museum last week, giving the rampant enthusiasts of America's sports car a look at the roughly 620-horsepower, supercharged rocket.
Unlike the Corvette SC610 we showed you back in January, this Stingray packs a fair bit more oomph. Horsepower is only up ten ponies, but torque has jumped from 556 pound-feet to "at least" 600 pound-feet. Neither horsepower nor torque is official quite yet, although Callaway is expecting to know just what its creation can do once testing and validation is completed later this month.
The 6.2-liter, supercharged V8 now boasts a new, three-element intercooler, which Callaway claims only allowed the inlet air temperature to increase by ten degrees Fahrenheit during dyno runs. Previous designs saw a 35-degree-Fahrenheit jump. The exhaust system has also been fettled with, and now is even less restrictive.

Final C6 Corvette built in Bowling Green

With all of the attention given to the 2014 Chevrolet Corvette Stingray lately, you could be forgiven for thinking that it's already well along in production, yet tooling up for the new C7 has only just begun. In fact, production of the outgoing C6 generation in Bowling Green, Kentucky just halted on Thursday.
As the C6 has aged, production numbers have predictably ebbed along with demand, but this year, the addition of the 427 and 60th anniversary models resulted in an uptick in vehicles built - this, despite a model year shortened by around 25 percent to accomodate the new model changeover. The final C6 Corvette ever, No. 13,466 built this year, was a white 427 Convertible destined for the General Motors Heritage Center museum. The car's 7.0-liter V8 heart was assembled by Corvette chief engineer Tadge Juechter himself.
In total, Bowling Green pushed out 215,100 C6 Corvettes over nine years. If you're still a C6 fan at heart and are hoping to get a good deal on a phase-out model, step lively - Chevrolet reportedly had about 6,100 unsold units, which Autoweek suggests is good for around five and a half months of supply at the model's current sales rates. Given that demand will likely slacken even further as the C7 draws closer, that should be a big enough stockpile to keep dealers satisfied until 2014 Stingrays begin showing up on their forecourts in December.