Circuit Description

WARNING: This page is about a different car, the 2005 Cadillac STS. However, it is still accessible from the selected car via links, so may be relevant.

The 2-3 shift solenoid (SS) valve is a normally-closed exhaust valve that, in conjunction with the 1-2 SS valve, allows 4 different shifting combinations. The 2-3 SS valve is attached to the control valve body, within the transmission.

The transmission control module (TCM) monitors the actual gear ratio, and compares the actual gear ratio with the commanded gear ratio. DTC P0757 sets under two conditions:

A stuck ON 2-3 SS valve
A stuck ON 2-3 shift valve

If the TCM detects a 1-2-2-1-1 shift pattern, then DTC P0757 sets. DTC P0757 is a type B DTC.