2012-2014 Toyota Camry Transmission Shudder

Some 2012 – 2014 model year Camry vehicles with a U760 transmission may exhibit a brief
shudder intermittently while driving under light loads between approximately 25 and 50 mph. The
torque converter and Engine Control Module/ECM (SAE term: Powertrain Control Module/PCM)
logic has been modified to reduce the possibility of this condition occurring. Follow the
Repair Procedure in bulletin 0312-17 to address this condition. TSB 0034-14 is now Obsolete.

See this post for warranty repair...
2012-2014 Camry Transmission Shudder Software Update LSC E03 w/ Warranty Extension ZE5