18-059-26

Flash: Powertrain Control Module (PCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs):
• **P2AF6-00 - Starter Relay 3 Stuck Off (with PCR).
• P00FD - Battery B State Of Charge Performance.**
• P2C90-00 - Crankcase Ventilation System - Hose "A" Disconnected (In Active or Stored status).
• P0111-00 - Intake Air Temperature Sensor 1 Circuit Performance (In Active or Stored status).
• P0071-00 - Ambient Air Temperature Sensor Performance (In Active or Stored status).
• P0073-00 - Ambient Air Temperature Sensor Circuit "A" High (In Active or Stored status).
• U0673-00 - Lost Communication With Ion Sense Module (In Active or Stored status).
• P06DD-00 - Engine Oil Pressure Control Circuit Performance/Stuck Off (In Active or Stored status).
• P1CEA-00 - Boost Side EVAP Purge System Performance (In Active or Stored status).
• P0E7E-00 - Coolant Bypass Valve B Control Circuit (In Active or Stored status). Customers may also experience **one or more** of the following:
• **MIL on start-up with no vehicle drivability impact.**
• High oil level indicator illuminated on the Instrument Panel Cluster (IPC). This bulletin involves inspecting and possibly reprogramming the PCM with the latest available software.