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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's big boxy crossover design sketch looks surprisingly good

The current Buick lineup is fairly bland, consisting solely of amorphous crossovers in small, medium, and large. Fortunately, the brand is showing signs of life at the General Motors design studio with new products like the Envista, and where designers have envisioned (no pun intended) a large, boxy vehicle that looks like a Kia EV9 competitor. The unnamed premium crossover was penned by designer Geoffrey Richmond and has a well-defined profile with a traditional SUV's squarish greenhouse. It could portend the next-generation Enclave, which shares a similar fishhook headlight design. However, the illustration's front end is a lot more cohesive, with foglamp housings that meet at the outer edges of the headlights.  The front end has sort of the Tesla EV duckbill thing going on, but a wide lower intake indicates that there could be an engine under the hood. In any case, this is just an ideation so there may not even be a platform to put this body on yet. That would be a shame, as the Enclave has been out since 2018 and could use a makeover. The V6-powered crossover was supposed to reposition the brand, and we found it quiet and surprisingly comfortable in our review. However, that hasn't been enough to catch on with trendsetters — Enclaves are rarer than Bentleys here in L.A. The "bar of soap" crossover trend is over. Nowadays, for better or worse, buyers want aggressive, rugged looking crossovers even if they're just going on a Target run. A bold design like the one Richmond painted might change the Enclave's fortunes. And maybe they can bring back the portholes. Related video: 2024 Buick Encore GX Nalgene water bottle test

Nissan Sentra, Buick LaCrosse to headline LA Auto Show

We're less than a month away from the start of the Los Angeles Auto Show, and automakers have been lining up their debuts for the upcoming left-coast expo. The latest announcement comes from the show's organizers who are eager to tout the global debuts slated for next month. Chief among them will be new versions of the Buick LaCrosse and Nissan Sentra. So far all we've seen of the 2017 LaCrosse is a glimpse at the front grille, but it's already promising to bring elements of the Avenir concept to the street. The original LaCrosse was launched in 2004 and was replaced in 2010 with the current model. The Sentra nameplate has been around much longer, but the current model was launched more recently in 2013. The new version spied recently while undergoing testing is promised to be a substantial update on that model, not a complete replacement, bringing it up to speed with the latest equipment and revised styling. This represents the first official confirmation we've received of when Nissan will be unveiling the new Sentra. Mitsubishi will also be on hand with its new Outlander Sport, as well as the redesigned Mirage. They'll be joined as well by new versions of a couple of high-end models that promise to resonate with the local crowds in tinseltown. Land Rover has chosen the LA show as a suitable venue to unveil the production Range Rover Evoque Convertible that will drop the top on one of the most stylish luxury crossovers on the market. And Porsche, as we know, is gearing up to hit the track with the new Cayman GT4 Clubsport - a customer racing version of the company's little two-seat, mid-engined sports car that's been lightly modified for motorsport competition. Of course these won't be the only new metal on display at the Californian auto expo. They'll be joined as well by the likes of the new Infiniti QX30, Hyundai Elantra, Kia Sportage, and Jaguar F-Pace - many of which we've already seen. Meanwhile companies like Fiat, Ford, Mazda, Mercedes, Subaru, Volvo, Volkswagen, and Elio Motors are keeping their plans under wraps for the time being. But with mere weeks to go, it won't be long before we see what they've got in store as well.