1st step with this code should be removing and replacing the output speed sensor
i would replace the input and output sensor
P0740 OUTPUT SPEED (OS) SENSOR
The OS sensor is mounted in adapter housing or extension housing. The OS sensor is an input device consisting of a speed sensor rotor and speed sensor. Speed sensor rotor is mounted on transmission output shaft. Input signal is delivered from OS sensor to TCM with each revolution of transmission output shaft. The TCM uses input signal for controlling transmission operation (shift points and TCC engagement).
Friday, December 11th, 2009 AT 4:52 PM