18-053-26

Flash: Powertrain Control Module (PCM) Updates Customers may experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle may exhibit/set the following Diagnostic Trouble Code (DTC):
• P219A - Bank 1 Air-Fuel Ratio Imbalance Bank 1. Customers may also comment on the following:
• **Potential under run or stall when the vehicle utilizes the Trailer Reverse Steering Control feature and is connected to a trailer attempting to backup.** This bulletin involves reprogramming the PCM with the latest available software.