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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.

Buick takes top spot in 2022 J.D. Power Initial Quality Study

People, economies, and supply chains weren't the only things continuing to get sick over the past year. The 2022 J.D. Power Initial Quality Study (IQS) is out, showing the average rate of problems per 100 vehicles (PP100) during the first 90 days of ownership increased overall. The average figure for the 32 ranked manufacturers in 2020 was about 166 problems per 100 vehicles. In the 2021 IQS, that dropped to an average of 162. This year, the average jumps to 180 problems. J.D. Power says that figure is a record high over the 36-year history of the study. Buick leapt to the top of the rankings this year with the fewest issues, at 139 problems per 100 vehicles in the first 100 days of ownership. After Dodge became the first American automaker to lead the IQS in 2020, followed by Ram in 2021, this year marks a three-peat for U.S. carmakers. Dodge took second this year at 143 PP100, Chevrolet third with 147 PP100, Genesis the first luxury maker on the chart in fourth with 156 PP100. Between February and May, this year's study gathered responses to 223 questions from more than 84,000 new 2022-model-year car owners and lessees. The questions are designed to zero in on real-world problems new owners encounter with nine categories of vehicle features: Infotainment; features, controls and displays; exterior; driving assistance; interior; powertrain; seats; driving experience; and climate. As has been the case in the past few year, infotainment has proved to be the most problematic bugbear making scores worse. Considering features individually, six of 10 of the worst problem areas dealt with infotainment, causing infotainment's score of 45 PP100 to be 19.5 PP100 worse than the second-placed feature. Consumers ranked getting Android Auto and Apple CarPlay to connect reliably as the most troublesome.  GM didn't just score with Buick, which was one of only nine of the 33 ranked brands to show improvement this year. The conglomerate earned first place with the fewest PP100 among all the automaker groups, and scored the most model-level awards with nine, ahead of BMW with eight and Hyundai Group with three.  This year's study again showed a gap between luxury and mass-market makers, thought to be down to the amount of tech in luxury vehicles that consumers aren't properly informed about or that doesn't act as expected — that latter issue exacerbated by the chip shortage.

GM drops price of Spark EV to $25,995; lease to $139/month

The drive to lower EV prices continues. GM announced today that the base model 2015 Chevy Spark EV 1LT would get a price cut to $25,995. That's $1,500 less than it used to be but the bigger news might be the lowered lease price. Instead of $199 a month, all that Chevy is asking for to get you into an all-electric Spark now is $139 a month (39 months, with no money due at signing), down from the 36-month, $199-a-month lease cost with a $999 down payment. Sadly, the number of states where the Spark EV can be bought is almost as small as the lease payment: the car is available only in California, Oregon and Maryland (well, Maryland won't be ready until the summer). GM is doing more than just lowering the MSRP. On top of the federal and state tax incentives available, GM is offering bonus cash in all three states ($1,000 in California, $1,200 in Maryland, and $3,500 in Oregon). If you're wondering why those numbers vary so much, take a look at the already-available state EV incentives in play: California offers $2,500 and Maryland $2,300. Somehow, they all balance out. If you do some addition with the $7,500 federal tax credit, you see that the Spark EV can be had for $11,000 off the MSRP no matter where you buy. If you qualify for everything, $14,995 is a darn good deal for an EV, especially one as fun as the Spark. Related Video: 2015 Chevrolet Spark EV Repriced to Offer Greater Value As low as $14,995 after full federal and state tax credits and Chevrolet Bonus Cash 2015-04-14 DETROIT – Chevrolet announced today Spark EV 1LT's new manufacturer's suggested retail price would start at $25,995. Depending on an individual's tax situation, the Spark EV is eligible for federal tax credit up to $7,500. "Chevrolet is committed to making EV driving more accessible, affordable and fun" said Steve Majoros, director of Chevrolet Car and Crossover Marketing. "The Spark EV is already the most efficient – and one of the most affordable – EVs you can buy. 2015 Spark EV customers will benefit from an impressive blend of technology, capability and low cost of ownership, now at an even more impressive price." California and Maryland Spark EV owners may also qualify for a $2,500 California state rebate or $2,300 Maryland excise tax exemption. Additional Chevrolet bonus cash is also available: $1,000 in California, $1,200 in Maryland, and $3,500 in Oregon. After full federal and state tax credits and Chevrolet bonus cash, the Spark EV could be as low as $14,995.