Flash: 6.4L Powertrain Diagnostic And System Enhancements
This bulletin involves reprogramming the Powertrain Control Module with the latest
available software.
A small number of customers may experience one or more of the following conditions:
? With the cluster set on metric units, they are unable to accurately increase or
decrease the cruise control set speed using the resume or set buttons. Instead of
changing vehicle speed by 1 KPH when pressing the buttons, the vehicle speed will
increase approximately 1.6 KPH.
? Potential gear hunting during cruise operation at lower vehicle speeds (25-40 mph).
In addition, a small number of customers with manual transmission equipped vehicles may
experience certain symptoms/conditions or a Malfunction Indicator Lamp (MIL)
illumination. Upon further investigation the Technician may find that the following
Diagnostic Trouble Code has been set:
? P2096 - Downstream Fuel Trim System 1 Lean. (LC vehicles with Sales Code ESH
with a manual transmission (Sales Code DEC).
? P2097 - Downstream Fuel Trim System 1 Rich. (LC vehicles with Sales Code ESH
with a manual transmission (Sales Code DEC).
? P2098 - Downstream Fuel Trim System 2 Lean. (LC vehicles with Sales Code ESH
with a manual transmission (Sales Code DEC).
? P2099 - Downstream Fuel Trim System 2 Rich. (LC vehicles with Sales Code ESH
with a manual transmission (Sales Code DEC).
? P0300 - Multiple Cylinder Misfire (set during engine warm-up) (LC vehicles with
Sales Code ESH with a manual transmission [Sales Code DEC]).
