Frequent Shifting

1. Defective inhibitor switch.
2. Defective mode switch.
3. Defective throttle sensor.
4. Defective cruise control switch.
5. Defective pulse generator.
6. Defective 1-2 solenoid.
7. Defective 2-3 solenoid.
8. Defective 3-4 solenoid.
9. Defective lock-up solenoid.
10. Malfunctioning control valve(s).