No Shift

1. Defective inhibitor switch.
2. Defective hold switch.
3. Defective 1-2 solenoid.
4. Defective 2-3 solenoid.
5. Defective 3-4 solenoid.
6. Fluid level too low or fluid contaminated.
7. Incorrectly adjusted selector cable.
8. Malfunctioning control valve(s).
9. Defective oil pump.