hi can any one help I have a 2001 v6 galaxy which has started to shift violently between 2nd and third and forth and fifth this caused ESP and engine management light to come on with code p0748 Pressure Control Solenoid Electrical I think it could be either dirty oil, low oil or a solenoid failure . Does anyone have any tips or advice or tips on how to confirm and fix the problem please ...??? Thanks in advance