A/T - Shudder/Buzz, Fluid Water Contamination: Overview
NUMBER: 21-003-06GROUP: Transmission
DATE: February 18, 2006
THIS BULLETIN SUPERSEDES SERVICE BULLETIN 21-011-05 REV A, DATED JULY 14, 2005, WHICH SHOULD BE REMOVED FROM YOUR FILES. THIS IS A COMPLETE REVISION AND NO ASTERISKS HAVE BEEN USED TO HIGHLIGHT REVISIONS.
SUBJECT:
Dipstick Tube Seal May Leak Causing ATF Contamination Or Transmission Shudder/Buzz
OVERVIEW:
This bulletin involves tests to be performed on the transmission to determine the integrity of the transmission oil fill tube seal. Dependent upon test results: the oil tube seal will require replacement, the transmission may require a flush procedure, and/or the transmission torque converter may require replacement.
MODELS:
2005 - 2006 (LX/LE) 300/Magnum/Charger
NOTE:
This bulletin applies to LX/LE vehicles equipped with a NAG1 transmission (sales code DGJ) that were built prior to December 2005 with a TRANSMISSION build date of July 08, 2005.
SYMPTOM/CONDITION:
Water may leak past the transmission oil fill tube (dipstick tube) seal. Dependent upon the amount of water accumulation in the transmission oil, the customer may experience a transmission shudder vibration and/or an audible high frequency buzz-like sound. The shudder vibration or buzz-like sound may be most noticeable during light acceleration where partial application of the torque converter clutch (TCC) in 3rd, 4th, or 5th gear occurs.
The shudder/buzz condition may be due to the torque converter clutch and a "stick-slip" condition caused by contaminated transmission oil/fluid. The transmission fluid contamination may be caused by water intrusion past the transmission fill tube seal.
DIAGNOSIS:
1. Determine if the original transmission fill tube seal has been previously replaced with fill tube seal p/n 05189087AA (or later).
2. Has the transmission oil fill tube seal been replaced with p/n 05189087AA (or later)?
a. If YES >> STOP. This bulletin does not apply. Further diagnosis is required.
b. If NO >> Proceed to the next step.
The transmission has a transmission part and serial number label which is located on the left (driver) side of the transmission above the transmission oil pan (Fig. 1). The bottom (11 digit) number on the label is the transmission part number. The TOP NUMBER (14 digit) on the label is the transmission SERIAL NUMBER. The date that the transmission was built can be obtained from the serial number (example: TxxxxxDDDyxxxxx). The transmission build date is in Julian calendar format which uses a 3 digit number to represent the day of the year and a 1 digit number to represent the calendar year. In the serial number: the 6th, 7th, and 8th number (3 digits) represent the Julian day, and the 9th number (1 digit) represents the year (in Julian date format). Example: TI2TJ 0015xxxxx shows that the transmission Julian build date is "0015". The numbers "001" in date "0015" equals the first day of the calendar year, or January 1st. The number "Sin date "0015" equals the calendar year, in this case the year 2005. A serial number of Txxxx1895xxxxx has a Julian date of "1895". "189" equals July 8th, and "5" equals the year 2005.
NAG1 transmissions built prior to a Julian date of 1895 (July 08, 2005) may have suspect fill tube seals.
3. Determine the transmission build date (Julian date) of the transmission by inspection of the serial number on the transmission part and serial number label.
4. Was the transmission built prior to July 08, 2005, Julian date 1895?
a. If YES >> Perform the Repair Procedure
b. If NO >> STOP. This bulletin does not apply. Further diagnosis may be necessary.
PARTS REQUIRED:
SPECIAL TOOLS / EQUIPMENT:
POLICY:
Reimbursable within the provisions of the warranty.
TIME ALLOWANCE:
FAILURE CODE:
Disclaimer:
This bulletin is supplied as technical information only and is not an authorization for repair.