Commander 4WD V8-4.7L VIN N (2006)
Fluid Filter - A/T: Customer Interest
A/T - Delayed Shift Engagement/Related DTC's Set
NUMBER: 21-007-06
GROUP: Transmission
DATE: April 07, 2006
THIS BULLETIN SUPERSEDES TECHNICAL SERVICE BULLETIN 21-016-05, DATED SEPTEMBER 01, 2005, WHICH SHOULD BE
REMOVED FROM YOUR FILES. THIS IS A COMPLETE REVISION AND NO ASTERISKS HAVE BEEN USED TO HIGHLIGHT REVISIONS.
SUBJECT:
RFE Transmission Filters - Delayed Engagement And Related Transmission DTC'S
OVERVIEW:
This bulletin involves verifying the build date of the transmission, and if necessary, the replacement of both the cooler return and sump filters in the
transmission.
MODELS:
2005 - 2006
(DR)
Ram Truck
2005 - 2006
(HB)
Durango
2005 - 2006
(KJ)
Liberty / Cherokee
2005 - 2006
(ND)
Dakota
2005 - 2006
(WK / WH)
Grand Cherokee
2006
(XK)
Commander
NOTE:
This bulletin applies to vehicles equipped with the a 45RFE or a 545RFE automatic transmission (sales code DG4 or DGQ respectively) having a
specific transmission build date code (see the below DIAGNOSIS section for further details).
SYMPTOM/CONDITION:
The customer may experience an initial delayed shift engagement following an extended off (not running) period of time, generally after being parked
overnight. The initial shift engagement may feel like a delay or slip when a transmission gear (reverse or drive) is first selected after engine start.
The customer may also experience a MIL illumination. Investigation may determine that the MIL is due to one or more of the following Diagnostic
Trouble Codes (DIG's):
P0868 - Line Pressure Low. This DIG will be the most frequently occurring DTC for the delayed shift condition.
P0944 - Loss Of Hydraulic Pump Prime.
P0731 - Gear Ratio Error In 1st.
P0736 - Gear Ratio Error In Reverse.
P0841 - LR Pressure Switch Rationality.
P0876 - UD Pressure Switch Rationality.
The delayed engagement and MIL condition (DTC's) may be caused by a suspect transmission cooler return filter with a part number of 04799662AB. A
suspect 04799662AB cooler return filter may cause the transmission sump filter to split at its plastic-to-metal crimp. If the transmission sump filter
becomes split at the crimp, then one or more of the above DTC's may also occur.
DIAGNOSIS:
1.
Turn the ignition to the "OFF" position.
2.
Raise the vehicle on a suitable lift.
