Identification4L60E, 4L65E, 4L70E, 4T40E, 4T45E, 4T65E, 4T80E, 5L40E, 5L50E - Allison LT 1000, LT2000, LT2400, LCT 1000, 2000, 4000
3-2 down shift, PWM, TCC lock up (1993-up), black connector, 1993-1995 - Allison TCC / "F"-Trim 2000-up
lock up (TCC), torque converter
2 - 1x 3-2 down shift, 1x TCC lock up
4L60E
4L65E
4L70E
4T40E
4T45E
4T65E
4T80E
5L40E
5L50E
Allison:
LT1000
LT2000
LT2400
LCT1000
LCT2000
LCT4000