This video is just a walk through of what you might be dealing with if you feel an unusual shudder.

Subject: Shake and/or Shudder During Light Throttle Acceleration Between 25 and 80 MPH(40 and 128 KM/H) at Steady Speed.
Attention: This Bulletin only applies to vehicles sold in the U.S., Canada and Middle EastOperations (MEO). Mexico and Export Regions should follow Bulletin 19NA018.
Bulletin link: https://static.nhtsa.gov/odi/tsbs/201...
https://gmauthority.com/blog/2019/08/...

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