Conditions for Setting the DTC: P0797
WARNING: This page is about a different car, the 2009 Pontiac Torrent and 2009 Chevrolet Equinox. However, it is still accessible from the selected car via links, so may be relevant.
The TCM detects an incorrect off-going clutch gear ratio, or tie-up, when the low and reverse/4-5-6 clutch is commanded OFF and the transmission input shaft speed is 40 RPM or less from the anticipated input shaft speed for 1.2 seconds.