Harsh 4-3 Shift

HARSH 4-3 SHIFT
1. Powertrain control system electrical inputs and outputs, wiring harnesses, Powertrain Control Module (PCM), shift solenoids, and transmission range sensor.
2. Faulty main control valve body.
3. Oil pump assembly damaged or leaking.
4. Intermediate/OD band, servo piston, rod bore, rod, or spring damaged.
5. Coast clutch assembly damaged or worn.
6. Leaking air pressure in servo apply and servo release circuits.