18-002-26 REV. B

Flash: Powertrain Control Module (PCM) Updates Customers may experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle may exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs):
• P219A - Bank 1 Air-Fuel Ratio Imbalance Bank 1.
• P219B - Bank 2 Air-fuel Ratio Imbalance. NOTE: This revision has an updated and more effective fix for DTC P219B than the prior version. Customers may also comment on one or more of the following:
• **Power Take-Off (PTO) may cancel during engagement with high PTO loads.**
• PTO not auto-resuming after hard-wired remote start (DD/DP Only).
• Engine speed surging, unstable, or oscillating while coasting at low vehicle speeds.
• Stationary Idle PTO feature is not activating when the user configuration is selected to require parking brake be set (DD/DP Only). In addition, the following software enhancement(s) is available:
• Increase the duration that Power Takeoff related messages are displayed on the Instrument Panel Cluster (IPC) (DD/DP Only) **This bulletin involves inspecting and possibly reprogramming the PCM with the latest available software.**