I had my 2018 Silverado serviced under the TSB 18-NA-355 "Shuddering". This TSB is applicable to a LOT of later model GM cars. If you have not had this done, I highly recommend it. The "shudder" on my truck was noticeable, but not terrible. Chevrolet did the service free and all I can say is WHAT A DIFFERENCE !!! If you have not done this to your C-7 Corvette, GET IT DONE ASAP!! Took a fair amount of time but it was well worth it.
8 Speed Automatic Transmission "Shudder"
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