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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.

Chevy Volt has worst sales month since August 2011, Nissan Leaf also down

January is traditionally a time when new car shoppers take a break. For the last few years, if we isolate our focus to just the first two major plug-in cars in the US market, we see that the first month of the year was lower – often dramatically lower – than the 11 that followed. So, when you see the Chevy Volt dropped and Nissan Leaf sales figures for January 2015, don't be too surprised. The Volt sold only 542 units last month, that model's lowest since August 2011. That also represents a 41 percent drop from January 2014, and it reinforces the thought that if anyone out there is interested in a new Volt, they're going to be waiting for the new model to drop later this year. While we do expect sales to climb in February and into spring, we won't be surprised if the general Volt trend remains quiet until the second-generation arrives. On the Leaf side of the ledger, January's low sales numbers were still about twice as high as the Volt's – the Leaf sold 1,070 units last month, the lowest since February 2013 – but it did break a streak for the Japanese automaker. Usually, each month represents at least an increase over the same month a year ago, but that wasn't the case this time. In January 2014, Nissan sold 1,252 Leafs. Still, Brendan Jones, Nissan's director of electric vehicle sales and infrastructure, issued an upbeat statement: "We saw a significant increase in demand in December from Nissan Leaf customers looking to take advantage of federal and state incentives at the end of the tax year, which pulled some sales ahead. We're confident that EV sales will continue to rise over time due to increasing emission regulations and other reasons for purchase of EVs such as lower operating costs, reducing dependence on foreign energy sources, environmental concerns and a great driving experience." The numbers will tell us soon enough. News Source: General Motors, Nissan Green Chevrolet Nissan Electric Hybrid ev sales brendan jones

2014 Chevrolet Corvette C7 Convertible offers a few more views before reveal

Over the weekend, Chevrolet released its first images of the new 2014 Corvette Stingray Convertible. Now, ahead of the droptop's official introduction tomorrow at the Geneva Motor Show, the automaker has given us a few more shots of the softop C7 showing off the car's rump albeit from a high, strategically positioned angle.
From this angle, it's hard to get a sense for how long and flat the decklid really is, but we can easily see that, like the rest of the C7's design, the new convertible's decklid and tonneau cover are far more detailed than the current car. We also get a better look at the rear haunches sans brake vents, which have apparently been moved to underneath the car in order to accommodate the top's hard cover.
As for the overall styling of the C7 convertible, with the top erected, we get some idea of what a coupe design (as opposed to the Stingray's fastback shape) would look like on this car. The C5 Corvette most recently had a coupe model that did away with the large glass hatchback, and we recently reported on a low-cost "coupe" model potentially being added to the C7's repertoire.