18-038-20

Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that the followingDiagnostic Trouble Code (DTC) has been set:P0456 - EVAP System Small Leak.If DTC P0456 is present use the wiTECH Small Leak Verification Test (SLVT) to determine if a leak is present in the system. Customers may also experience the following:Noise heard from the drivetrain while stationary and vehicle is in Sport/Track modes.