Circuit Description
WARNING: This page is about a different car, the 2007 GMC Yukon XL and 2007 Chevrolet Suburban. However, it is still accessible from the selected car via links, so may be relevant.
The 2-3 shift solenoid (SS) valve controls fluid flow acting on the 2-3 shift valve. The 2-3 SS valve is a normally open exhaust valve used with the 1-2 SS valve in order to allow for 4 different shift combinations.
If the transmission control module (TCM) detects a non third gear ratio while third gear is commanded, then DTC P0757 sets. DTC P0757 is a type A DTC.