Magnum V8-5.7L VIN H (2005)
Technical Service Bulletin # 21-011-05A
Date: 050714
A/T - NAG1, Shudders When Shifting
NUMBER: 21-011-05 REV. A
GROUP: Transmission
DATE: July 14, 2005
THIS BULLETIN SUPERSEDES SERVICE BULLETIN 21-011-05, DATED APRIL 23, 2005, WHICH SHOULD BE REMOVED FROM YOUR
FILES. ALL REVISIONS ARE HIGHLIGHTED WITH **ASTERISKS** AND INCLUDE AN UPDATED VEHICLE BUILD DATE AND MODEL
YEAR.
SUBJECT:
NAG1 (W5A580) Transmission - Shudder When Torque Converter Clutch Engages
OVERVIEW:
This bulletin involves thoroughly flushing the NAG1 (W5A580) transmission of any water contamination, replacing the transmission filter, and applying
RTV sealant around the base of the transmission fill tube to prevent water intrusion past the fill tube seal.
MODELS:
2005 - **2006**
(LX)
300/Magnum/Charger
2005
(WK)
Grand Cherokee
NOTE:
This bulletin applies to vehicles (WK w/3.7L, LX w/5.7L, or LX AWD w/3.5L) equipped with a NAG1 transmission (sales code DGJ). For LX
vehicles, this bulletin applies to 2005 and 2006 vehicles built prior to May 13, 2005 (MDH 0513XX). **For WK vehicles, this bulletin applies to
vehicles built prior to June 03, 2005 (MDH 0603XX)**.
SYMPTOM/CONDITION:
The customer may experience a transmission shudder when shifts occur. The shudder is most noticeable with partial application of the torque converter
clutch in 3rd and 4th gear.
DIAGNOSIS:
If the customer experiences the condition perform the Repair Procedure.
NOTE:
This condition may occur when only a small 0.5% concentration of water is present in the automatic transmission fluid. It will be very important to
ensure that the transmission and torque converter is thoroughly flushed of any water and other possible contaminants.
PARTS REQUIRED:
SPECIAL TOOLS / EQUIPMENT:
POLICY:
Reimbursable within the provisions of the warranty.