One of the transmission solenoids is not working

Question

Which solenoid to get for a code po748?

Answer 1

P0748 Pressure control solenoid "A" electrical (Shift Solenoid Valve SL1)

If you replace the pressure control solenoid, just mind you, it may be set because of the ECM , this code is a known condition where the ECM cause the SL1 solenoid to fail sooner .and as a result the  the pressure control solenoid driver in the ECM shorts out.