Conditions for Setting the DTC

WARNING: This page is about a different car, the 2011 GMC Yukon XL, 2011 GMC Yukon, 2011 Chevrolet Tahoe, 2011 Chevrolet Suburban, and 2011 Chevrolet Avalanche. 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.