No 3-4 Shift

NO 3-4 SHIFT
1. Powertrain control system electrical inputs and outputs, wiring harnesses, Powertrain Control Module (PCM), shift solenoids, and transmission range sensor.
2. Low hydraulic line pressure.
3. Faulty main control valve body.
4. Intermediate/OD band, servo piston, rod bore, rod, or spring damaged.
5. Coast clutch assembly damaged or worn.
6. Forward one-way clutch assembly damaged.
7. Leaking air pressure in servo apply and servo release circuits.