Wife got a scare, truck died on her, she restarted it and the CEL was on, I read the DTC codes and P0601 popped up, PCM EEPROM (P0601 ENGINE CONTROL MODULE CHECKSUM ERROR) WTF. Funny a guy asked me a few months back about his TB (2004) experiencing the same exact code P0601 and asked if I could re-flash the PCM, I told him I could but would not guarantee success.

2 in a known time period weird. Bad PCM EEPROM run?

Addition ; Visited Trailvoy site and see there are lots more.
112,000 miles past Emission warranty period.