Action Taken When the DTC Sets

WARNING: This page is about a different car, the 2007 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.

The TCM requests the engine control module (ECM) to illuminate the malfunction indicator lamp (MIL).
The TCM commands maximum line pressure.
The TCM inhibits 1st and 4th gear.
The TCM freezes transmission adaptive functions.
The ECM records the operating conditions when the Conditions for Setting the DTC are met. The ECM stores this information as Freeze Frame and Failure Records and the TCM records the operating conditions when the Conditions for Setting the DTC are met. The TCM stores this information as Failure Records.
The TCM stores DTC P0976 in TCM history.