I have a ( PO756 - MOD$10 1/1 - Shift Solenoid B - CKT Performance - Stuck Off ) and it had the problem when u are driving it wont shift into 2 unless you let go the gas and if u dont the rpms go higher. Thanks if we can figure this out by today id be glade because my father is stuck without a car. Well anyways my question is were is this located in the transmission in the pan which i herd its located and what does the solenoid look like? Thanks