1813522

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, a technician may find one or more of the following DTCs have been set: P0133 - O2 Sensor 1/1 Slow Response. P0153 - O2 Sensor 2/1 Slow Response. P0335 - Crankshaft Position Sensor Circuit. The following software improvements are also available:Improved vacuum sensor diagnosis for the Hydraulic Booster Compensation (HBC) feature in the Electronic Suspension Control (ESC) module. Software to enable vehicle max speed programming using wiTECH. The following software enhancements are also available to allow the brake lamp to illuminate when any of the following occur: Engine Vacuum Pump (EVP) runs for too long and shuts off. Any EVP pump faults. Any brake booster sensor faults.