From OD or D to 1 at 55 MPH/Coasting, No Downshift to 2ND Felt

FROM OD OR D TO 1 AT 55 MPH/COASTING, NO DOWNSHIFT TO 2ND FELT Kickdown Shift Speeds Too Early
1. Main control pressure malfunction.
2. Improperly adjusted intermediate band.
3. Overdrive clutch damaged.