P0720 seems to indicate that there are two speed sensors, a vehicle speed sensor and an output speed sensor.
The code message is "Vehicle Speed Sensor over 1 MPH while the output speed sensor signal did not agree"
Failed output speed sensor
*** UPDATE ***
I have just replaced the speed sensor on top of the tranny which has a wire lead extending from it. Advance auto listed that part as the output sensor. That fix did not work. Does anybody know the location of the other speed sensor, the sensor Advance auto calls the input speed sensor?
The code message is "Vehicle Speed Sensor over 1 MPH while the output speed sensor signal did not agree"
Failed output speed sensor
*** UPDATE ***
I have just replaced the speed sensor on top of the tranny which has a wire lead extending from it. Advance auto listed that part as the output sensor. That fix did not work. Does anybody know the location of the other speed sensor, the sensor Advance auto calls the input speed sensor?