Recently did a rear diff swap from 2.73 to 3.42 with a mild tune unfortunately I'm know getting a 1870 code after about an hour or two of normal driving at the same time the torque converter unlocks and i also experience hard shifts between 2nd and 3rd i seen one the forum that raising the PWM settings will take care of this issue , has anyone tried this and has it been successful Thx. PS when code comes up trans temps start rising..