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Patient - 2019 1500 LD, 5.3, 6 sp, 7200 miles old, Covid-19 negative.  Symptoms - 2-3 second shutter / shake / rumble, during light acceleration, 30-40 MPH and low RPM.  Happens while both in V4 mode and while in v8 (manual w/ transmission set to L5).  I thinks its the torque converter, but surfing the forum I see this issue mainly referenced to 2015+/- K2s and I'm not sure if they changed the trans in the final years.  I'd appreciate either a TSB # or a link to another posting were I could find the TSB.  I'd like to be able to take to my dealer and say "HERE....READ....FIX" (politely).  Many thanks!

Edited by Big R ED
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Unfortunately the bulletins for trans issues don't cover '19 old style, but I'm sure they would apply if the bulletin matches your problem.  These may match your issue.  I cant copy the whole bulletin(s), but it may help.  

 

#PIP5504E: Diagnosing Fishbite Chuggle Misfire Feeling Or Shudder Vibration, With A Light Tip In - (Jun 25, 2020)

 

#18-NA-355: Shake and/or Shudder During Light Throttle Acceleration Between 25 and 80 MPH (40 and 128 KM/H) at Steady Speed - (Mar 30, 2020)
Subject: 

Shake and/or Shudder During Light Throttle Acceleration Between 25 and 80 MPH (40 and 128 KM/H) at Steady Speed

 

 

#PIP5175D: Slip Or Shudder During A Launch In First Second Third Or Fourth Gears Delayed Engagement Into Drive Clunk Or Bump During The 1-2 Shift - (Jun 8, 2020)
Subject: 

Slip Or Shudder During A Launch In First Second Third Or Fourth Gears Delayed Engagement Into Drive Clunk Or Bump During The 1-2 Shift

 

 

 

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