18-038-26

Flash: Powertrain Control Module (PCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle exhibit/set **one or more of the following Diagnostic Trouble Codes (DTCs)**:
• **P219A - Bank 1 Air-Fuel Ratio Imbalance.
• P219B - Bank 2 Air-fuel Ratio Imbalance.**
• P032F - Combustion Engine Producing Insufficient Torque. Customers may experience one or more of the following:
• **Engine speed surging, unstable, hunting, or oscillating while coasting at low vehicle speeds.
• Stationary Idle Power Take off (PTO) feature is not activating when the user configuration is selected to require parking brake be set (DD/DP Only).
• PTO not auto-resuming after hard-wired remote start (DD/DP Only).**
• Driveline clunk or bump when coasting to a stop **in cruise control mode.**
• Engine idle undershoot or delayed response with power steering input. **In addition, the following software enhancement(s) is available:
• Increase the duration that PTO related messages are displayed on the Instrument Panel Cluster (IPC) (DD/DP Only).** This bulletin involves reprogramming the PCM with the latest available software.