0802123

Flash: Radio Frequency Hub Module (RFHM) Updates Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more of the following Diagnostic Trouble Code (DTCs) have been set: ? B21DD-84 - System Voltage-Signal Below Allowable Range. ? B21DD-85 - System Voltage-Signal Above Allowable Range. ? C151D-00 - Tire Pressure Sensor Location Undetermined. ? U1517-87 - Body Controller Secret Code-Missing Message. ? B1A71-01 - Passive Entry Antenna 1-General Electrical Failure. ? B1A72-01 - Passive Entry Antenna 2-General Electrical Failure. ? B1A73-01 - Passive Entry Antenna 3-General Electrical Failure. ? B1A74-01 - Passive Entry Antenna 4-General Electrical Failure. ? B1A75-01 - Passive Entry Antenna 5-General Electrical Failure. The customer may also experience one or more of the following: ? ?Fob Left Vehicle? message is displayed on Instrument Panel Cluster (IPC) after a remote start. ? Vehicle no-starts. This bulletin involves updating the RFHM module with the latest available software.