1972 C3 Chevrolet Corvette Stingray Coupe Project Parts Car - Clear Title on 2040-cars

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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.

GM opens official investigation into C8 Corvette transmission leaks

In March 2020, a month after Chevrolet began customer deliveries of the 2020 C8 Corvette, a GM dealer technician created a Reddit thread about a leaking gearbox in a Corvette with 32 miles. That car hadn't even been sold yet. Since then, as a search of "C8 Corvette transmission leak" shows, it's been tales of woe for some owners. Something in the Tremec TR-9080 transaxle in the back of the mid-engined Corvette doesn't work as it should, the fault able to cause codes that the transmission needs service, or that the driver needs to shift to park. In some cases, the battery would die because of follow-on issues after the initial transmission code, that code preventing the car from powering down. As Autoevolution reports, GM filed paperwork with the National Highway Traffic Safety Administration in August to look into what's going on. Between forum threads and GM's investigation document, there are several issues mentioned. The most common appears to be the dual-clutch transmission leaking fluid due to gasket failures like the one suffered by one owner at 858 miles, and another for an owner currently enduring a second leaking transmission. The Midengined Corvette Forum reported that Chevy engineers redesigned the TR-9080 pan, fitting Corvettes with the new unit at some point in the 2021 model year. The original pan was stamped steel unit affixed to the engine with two studs and 13 bolts, plus "reinforcement plates." The updated pan is said to be a cast aluminum unit affixed with two studs and 17 bolts, omits the reinforcement plates, and gets a new machined new groove around its edge to seat the gasket seal. The GM paperwork now at the NHTSA mentions a P1789 code, and says one reason for it could be "debris on the park position sensor magnet causing an incorrect position reading to the TCM." This might be caused by another issue mentioned in forums, which is clogged transmission filters. GM gives instructions for returning transmission filters to the company, and a poster on one forum said the Corvette tech at the dealer where he bought his Corvette told him the automaker "requires every used transmission filter to be returned to GM."  Whatever's going on, the problems haven't stopped, and they go beyond the P1789 code. Over the weekend, a 2022 Corvette owner posted on Corvette Forums that he got a check engine light on his car after just 850 miles.

GM invests $24 million to build more crew cab trucks in Fort Wayne

The full-size pickup truck arms race continues unabated here in the United States as Ford, General Motors and Fiat Chrysler battle back and forth for sales supremacy. The Ford F-Series of trucks continues to lead the field in sales (214,611 units sold through the first quarter of 2019), but the race for second place has been a lot more interesting to watch. That's because Ram, long a distant third in truck sales, eked its way past Chevrolet late in 2018 and has managed to hold the position so far in 2019. Don't take this to mean that sales of GM's trucks have been poor across the board. In fact, the automaker reports that sales of its four-door crew cab pickups are up 20 percent in 2019 over the same period a year ago. And that's what makes GM's announcement today so interesting. The automaker is investing $24 million into its assembly plant in Fort Wayne, Indiana to build more Chevy Silverado and GMC Sierra pickup trucks, and the focus will continue to be on crew cab models. "We are building Chevrolet and GMC crew cab pickups at record volume and mix levels to meet customer demand and the $24 million investment will allow us to build even more," said GM chief Mary Barra in a statement. "Crew cab sales have been very strong, and we are expanding customer choice with new models, more cab choices and innovative new powertrains." It's worth noting that, if crew cab sales are up 20% this year, but overall sales are down (over 15% for Silverado and around 2% for GMC), that means it's the cheaper regular cab and double cab models that are lagging. At the same time, sales of the midsize Chevy Colorado have surged 16%. And finally, if you combine sales of the Silverado and Sierra into one bucket, GM still has a comfortable lead over Ram overall. If there's a takeaway here, it's that trucks of all shapes and sizes have been, currently are and will surely remain hot in America, and automakers will continue to invest money into making sure they are able to satiate consumer demand.