Flash: Transmission Diagnostic and Shift Enhancements
This bulletin involves reprogramming the Transmission Control Module (TCM) with the latest available software.
Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that one of the following Diagnostic Trouble Codes (DTCs) have
been set:U1412 - Implausible Vehicle Speed Signal Received.
P0887 - TCM Power Control Circuit High.
U0001 - Automatic Gearbox Shifter Module (AGSM) CAN Communication BUS (BUS Off).
P0901 - Clutch 1 Actuator Control Circuit Performance.
In addition, the following software enhancement is available:Changes which allow the catalytic convertor to operate cooler.
