Soft or Slipping 3-4 Upshifts

SOFT OR SLIPPING 3-4 UPSHIFTS
1. Main control assembly gaskets damaged or bolt out of torque.
2. Main control separator plate damaged.
3. Main control Electronic Pressure Control (EPC) solenoid stuck or damaged.
4. Overdrive band adjustment incorrect.
5. Overdrive band friction elements burnt or missing.
6. Overdrive band cylinder damaged.
7. Overdrive band case bore damaged.