I will also be replacing solenoid A as soon as the part arrives. I'm currently at 159,800 miles. I hope my problem will be address by replacing the solenoid. I'll post update after I swap out solenoid and change out tranny filter.Same issue, 07 with 100700miles and throws a P0753 after replacing with the E revision of the TCM for $500... yay... I also swapped the solenoids around to see if it would throw a different code for the malfunctioning solenoid itself, but it keeps saying A which leads me to believe it is a wiring problem, or something totally unrelated and this is just the code that gets thrown as a result. I have the set of solenoids coming in the mail so I guess we will see soon. On another point, the diagrams say A is one of the large ones, but the focus of the same generation seems to eat up the smaller solenoids so I'm not sure which is actually which.