I posted a question regarding a shudder when shifting gears on my 1999 S80 2.9. I just found this info on the internet:
Poor transmission shift: On less than 10,000 vehicles, the transmission was receiving an announced software upgrade (2000-01) and those with a GM (model 4T65) transmission needed a replacement shift solenoid to correct a shudder between 2nd and 3rd gear. (1999-2000)
Would someone please explain what this is? Does having a 1999 automatically mean I have the GM 4T64 transmission? (I'm out of warranty but have 49,700 miles on the car) Is this an expensive fix?
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