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.
