RPM Fluctuation

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RobbyD

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Before jumping to the torque converter being bad lets investigate things that would cause the TC to engage or disengage. Maybe the transmission is being commanded to exit/enter TC lockup?

This looks like a 07 4l60e
You would be correct. I look forward to hearing your insight. I probably should've mentioned this earlier, but I do have access to a Tech-2 scan tool.
 

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