Conditions for Setting the DTC
WARNING: This page is about a different car, the 2018 GMC Yukon XL, 2018 GMC Yukon, 2018 Chevrolet Tahoe, 2018 Chevrolet Suburban 3500 HD, and 2018 Chevrolet Suburban. However, it is still accessible from the selected car via links, so may be relevant.
P0601
- The read only memory has detected an incorrect program or calibration checksum error.
- This condition has been present 5 or more times within a 16 count time period.
P0603
- The TCM has detected a long term memory checksum error during power up.
- This DTC runs continuously.
P0604
- The TCM has detected a single word failure with the random access memory.
- This condition has been present 5 or more times within a 16 count time frame.
P062F
- The TCM has detected the non-volatile memory is incorrect during power-down.
- This DTC runs continuously.