Conditions for Setting the DTC

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.

The random access memory (RAM) of the TCCM has failed an operational test indicating that some portions of RAM are not functional.
The read only memory (ROM), or the masked ROM, of the TCCM has failed the Checksum test indicating that the data is not currently valid.
The critical operational parameters stored in the EEPROM of the TCCM have failed the Checksum test indicating invalid data.