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

Bulletin number

18-009-16 REV. B

Component

Power train

Summary

"flash: powertrain diagnostic and system improvements this bulletin involves reprogramming the powertrain control module (PCM) with the latest available software. Customers may experience a malfunction indicator lamp (mil) illumination. Upon further investigation the technician may find the following dtcs set in the PCM memory: · p1066 - cylinder 1 oil supply solenoid valve switch off time out of range. · p1068 - cylinder 2 oil supply solenoid valve switch off time out of range. · p106a - cylinder 3 oil supply solenoid valve switch off time out of range. · p106c - cylinder 4 oil supply solenoid valve switch off time out of range. · p1185 - general pressure sensor correlation. · p0335 - crankshaft position sensor circuit. · p050d - cold start rough idle. · p0456 - evap system small leak. · p0133 - o2 sensor 1/1 slow response (additional enhancements). · p2610 - PCM internal engine off timer performance. · p1607 - PCM internal shutdown timer rationality. In addition to the above dtcs, this software release also includes the following: · a “clunk feeling"" when depressing the gas pedal after a coasting maneuver when decel fuel shut off (dfso) is enabled and is exiting during pedal tip-in. · false reading that the engine is overheating based on the engine oil temp gauge read out. · improved ambient temperature sensor diagnostics during sunload. · disable misfire monitor when p0335 (crankshaft position sensor circuit) is present. · engine oil temperature gauge level recalibration to avoid the misperception of an engine overheating condition."

Owners of these vehicles have filed 88 complaints in the transmission category.