"Flash: powertrain diagnostic and system improvements this bulletin involves reprogramming the powertrain...

Bulletin number

18-024-16 REV. B

Component

Power train

Summary

"flash: powertrain diagnostic and system improvements this bulletin involves reprogramming the powertrain control module (PCM) with updated software. The customer may experience a malfunction indicator lamp (mil) illumination or notice that the fuel saver indicator light (fsi) is turning on and off. Upon further investigation the technician may find one or more of the following diagnostic trouble codes (dtcs): · p0452 - evap pressure switch stuck closed (10 my with sales code deh only). · u0140 - lost communication with body control module. Attempting to clear the dtc may be unsuccessful. Other enhancements included in this update: · improved fuel pump relay operation. · improved remote start time after key activation. · improved automatic shutdown relay (asd) timer calibration. · fix for false (fsi) light on (with combination sales codes egt and deh)."

Owners of these vehicles have filed 108 complaints in the transmission category.