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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.

2014 Chevy Cruze Diesel arrives with 42 mpg for $25,695*

The last time General Motors had a diesel passenger car in the US, it was the 1.8-liter 1986 Chevette. At the 2013 Chicago Auto Show today, GM is unveiling the much-anticipated 2014 Chevrolet Cruze Diesel. The compact bows with a 2.0-liter turbo-diesel four-cylinder engine that boasts 148 horsepower and 258 pound-feet of torque, with full twist coming on at just 2,000 rpm. What's more, the common-rail, direct-injection diesel features an overboost function that allows the engine to deliver up to 280 lb-ft of torque for 10 seconds at a time. Even with 10 more horsepower and 110 more pound-feet of torque than the available turbocharged 1.4-liter four-cylinder in the Cruze, the 2.0-liter diesel engine can return up to 42 mpg (highway) bolted to its six-speed automatic transmission.
If you're counting, that figure meets the less powerful Cruze Eco with a six-speed manual transmission. More importantly, the auto transmission Cruze Diesel matches its main competition, the Volkswagen Jetta TDI, in highway fuel economy. The Cruze 2.0 TD (as it will be badged) can also handle up to 20 percent biodiesel (B20), whereas the Jetta is rated only for B5. General Motors has not released city fuel economy for its newest diesel, but we do know how much it will cost you to jump behind the driver's seat.
GM will kindly ask for $25,695, plus an $810 destination fee. That marks a $2,115 premium over a loaded Cruze LTZ Auto and $2,640 more than the Jetta TDI, though the MSRP will net you a leather interior, 17-inch alloy wheels and an Aero Performance Package, as well as a two-year maintenance plan and five-year, 100,000-mile powertrain warranty. Compared to the gas-powered Cruze, you also lose a couple cubic feet of rear cargo space thanks to a 17-liter diesel emission fluid tank. That urea fluid, which helps put the clean in clean diesel, will need to be refilled at least every 10,000 miles.

2014 Chevrolet Corvette Stingray priced from $51,995*

After months of speculation, Chevrolet has finally revealed the official starting price of the 2014 Corvette Stingray. The base MSRP for the 450-horsepower Stingray Coupe will be $51,995, while the Stingray Convertible will go for $56,995 (*both prices include a $995 destination fee). This means that the price increase from 2013 to 2014 is just $1,400 for the coupe and $2,395 for the convertible - pretty modest increases considering the upgrade in specifications. Of course, neither price accounts for the sort of dealer markup that might grace early C7 window stickers, especially since less than a third of all Chevrolet dealers will be allocated Corvette models to sell at the car's launch.
Now, these prices are for the base car, so if you're wondering how much a fully loaded Stingray will run, Chevy has given us a good indication of that as well. The coupe we saw on display at the Detroit Auto Show (shown above), for example, would run $73,360 including options such as the $2,800 Z51 Performance Package, $2,495 competition sport seats and the $1,795 Magnetic Ride Control option - just to name a few. Stepping up to the 3LT trim level that brings a full leather interior will run an extra $8,005 over the base price.
While $20,000 in options may seem like a lot, this "as-tested" price still has the C7 competitively priced against rival coupes like the Porsche 911 and Nissan GT-R. Speaking of price comparisons, Chevrolet also points out that the C7 Stingray Z51 costs $2,200 less than the C6 Grand Sport while delivering better acceleration (0-60 mph in less than four seconds) and improved track performance (including more than 1 g in cornering).