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Home >> Chevrolet >> 2020 >> Express 2500 LS, 6.0L Eng VIN G >> Repair and Diagnosis >> External Pages >> Different car >> Section 56 (Automatic Transmission - 6L90 (MYD) - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> DTC P0601-P0604 or P062F >> Conditions for Setting the DTC

Conditions for Setting the DTC

WARNING: This page is about a different car, the 2019 GMC Savana 3500, 2019 GMC Savana 2500, 2019 Chevrolet Express 3500, and 2019 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.

P0601 

Calibration Read Only Memory = Checksum Invalid

P0602 

Transmission Control Module = Control Module Not Programmed - During control module power up

P0603 

Transmission Control Module = Checksum Invalid - During control module power up

P0604 

Transmission Control Module = Memory Malfunction

P062F 

Control Module Non-Volatile Random Access Memory = Incorrect - During control module power up

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