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My dealer did the transmission flush, but it didn't fix the issue. I dropped it off Saturday and just got back with me today. They said they are replacing the entire transmission, not the torque converter. Here is the bulletin he found. I'm kind of confused that they didn't just go with replacing the torque converter, since that's step #2 after the fluid flush. Anyone have there trans replaced for this shudder issue?
#44470: 44470 Torque Converter With Piston Apply Surface Not Machined - (Jun 7, 2016)
Subject: 44470 Torque Converter With Piston Apply Surface Not Machined
Models: 2016 Cadillac CT6
2016 Chevrolet Camaro
Condition
Certain 2016 model year Chevrolet Camaro and Cadillac CT6 vehicles, equipped with an 8-speed automatic transmission (RPO M5T or M5N), may have been built with an incorrectly machined torque converter pressure plate. Over time, this condition could result in a shudder or vibration, fluctuations on the tachometer and possible torque converter failure.
Correction
Replace the transmission.
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