Action Taken When the DTC Sets

WARNING: This page is about a different car, the 2009 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.

P2719 is a Type B DTC.
P2720 and P2721 are Type A DTCs.
The TCM defaults the transmission to a limited shift pattern utilizing 2 forward gears and reverse based on the default detected.
The TCM commands maximum line pressure.
The TCM freezes transmission adaptive functions.