Transmission valve body replacement or repair?

MANN551

MEMBER
2008 INFINITI G35
3.5L
V6
2WD
117,000 MILES

Good afternoon, first of all I want to thank you for your time.

The first symptoms I have experienced were when hitting speed over 60 MPH it wouldn’t shift gears to speed up, but RPM would keep climbing. Another symptom is when coming to a sudden stop, if I accelerate suddenly the car shakes before speeding up.
I have a P1757 code saying Front Brake solenoid. My question to you would be, what is the best approach to this repair? I have been searching for a donor transmission from the same vehicle but no clue if it will work as simple as a swap. My other option would be opening the valve body and soldering on the connections then put it all back together.

Thank you

1 Reply

JACOBANDNICKOLAS

MECHANIC
109,885 POSTS

Hi,

The code indicates there is an electrical issue. It could be something as simple as a connector, so that is where I would recommend starting rather than replacing it.

As far as the code, I attached the diagnostics below. Take a look through them and let me know if you are comfortable performing them

Take care,

Joe

See pics below.

Images (Click to make bigger)