Pulsating at certain speeds

[OilfieldTrash78]

Anyone else experiencing pulsating at around 35-40mph, and around 75-80mph while cruising. I have noticed this, and found someone on one of the FB groups that noticed the same. He was able to get the dealership to put in a new torque converter, and he said it solved the problem, and his drive drives a lot better than it ever did. Just trying to see if anyone else has had this problem

 

 

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[Dallas Kiezik]

Trouble shooting this condition now too.

I tried the turn it on, put the go pedal to the floor for 15 seconds, release for 15 seconds, put the pedal to the floor for 15 seconds, then turn it off, release the go pedal, wait 30 seconds then start it up.

Think it relearns throttle body position and maybe some TCM learned settings.

seems better, but it also been warmer and could be a temperature related condition.