P2763 or P2764

WARNING: This page is about a different car, the 2010 GMC Sierra, 2010 GMC Cab & Chassis Sierra, 2010 Chevrolet Silverado, and 2010 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

DTCs P2763 and P2764 are Type A DTCs.
The TCM inhibits TCC.
The TCM commands maximum line pressure.
The TCM freezes transmission adaptive functions.
The TCM enables Torque management.
The TCM inhibits TAP Up/Down function.
The TCM inhibits manual shifting of forward gears.