18-002-16 REV. C

Flash: 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, or a slight push in the vehicle may be felt when coasting down while the transmission shifts from 8th to 7th gear. Upon further investigation, the technician may find the following Diagnostic Trouble Codes (DTCs) set in the PCM memory: · **U1424 - Implausible Engine Torque Signal Received DTC False Failure. · P2097 - Downstream Fuel Trim System 1 Rich DTC Calibration Robustness Improvement. · P2099 - Downstream Fuel Trim System 2 Rich DTC Calibration Robustness Improvement.** · U0402 - Implausible Data Received. · B10EA - Blower Motor Control Circuit High. · B10E9 - Blower Motor Control Circuit Low. · P0456 - EVAP System Small Leak. In addition the following enhancements is included: · Vehicle shudder at stop/start with A/C on.