Have code P0751 on the GTP. It will start out fine but I have to let off to get it to shift into 2nd. Then it shifts into third no problem and also goes into 4th no problem. But if i floor the gas at 60 or so mph it won't kick down. Only way to get it to downshift is to decell to a lower speed or put it in 3rd and then it will downshift.

When I come to a stop the shift from 2nd down to 1st is REALLY hard.

I am thinking it is the 1-2 Shift Solenoid. But wanted to get some second opinions.

Based on the shift pattern it seems that the solenoid doesn't want to turn off. Except for the hard downshift from 2nd to 1st. Unless im really feeling the 4-3 downshift and not realizing it.


Shift Patterns

1-2 Solenoid 2-3 Solenoid
1st on on
2nd off on
3rd off off
4th on off


for some reason it wont let me put multiple spaces in the shift pattern table to make it easy to read but the number is the gear and then the first on or off is the state of the 1-2 solenoid in that gear and the second is the state of the 2-3 solenoid