37929.2.0

This is a TJ - text only no attachments - If a customer experiences a DIM message stating "Propulsion System Service Required" and DTC IGM P06B400 is set, please follow the advice under "Service". Verify that the vehicle has software version 5.1.21 or newer. If necessary, update the vehicle's software according to TJ 31543. If the vehicle already has software version 5.1.21 or newer, or if the DTC comes back after the software update, replace the IGM.