Action Taken When the DTC Sets

WARNING: This page is about a different car, the 2008 GMC Yukon XL, 2008 GMC Yukon, 2008 Chevrolet Tahoe, 2008 Chevrolet Suburban, and 2008 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

P0973

DTC P0973 is a Type B DTC.
The TCC commands maximum line pressure.
The TCM inhibits 3-2 shift until vehicle speed is less than 20 km/h (12 mph).
The TCM freezes transmission adaptive functions.

P0976

DTC P0976 is a Type A DTC.
The TCM inhibits 1st and 4th gear.
The TCC commands maximum line pressure.
The TCM freezes transmission adaptive functions.

P2764

DTC P2764 is a Type B DTC.
The TCM commands maximum line pressure.
The TCM forces TCC OFF.
The TCM inhibits 4th gear if in Hot Mode.
The TCM freezes transmission adaptive functions.