Tsb dt 2008 10 02 erratic shiftingAMSOIL INC., AMSOIL Bldg., Superior, WI 54880 (715) 392-7101
Copyright 2008OBJECTIVE:Inform AMSOIL customers of problems inherent to Chryslerautomatic transmission performance if proper mechanical pro-cedures are not performed following automatic transmissionservices, and provide Chrysler recommendations for prevent-ing and correcting these problems.ISSUES:Bump shifts, or very hard down shifts, will occur in Chrysler,Jeep and Dodge automatic transmissions if the proper mechan-ical procedures are not performed following service work.This includes, but is not limited to, transaxle replacement,transmission control module (TCM) replacement, solenoidreplacement, clutch plate and/or seal replacement, valve bodyreplacement or repair, and oil and filter changes.
TECHNICAL DISCUSSION:Chrysler, Jeep and Dodge have issued TSB 18-020-02, TSB18-037-05, TSB 21-005-03 REV.A and TSB 21-006-03REV.A to explain the issue in detail, as well as the necessaryprocedure to prevent and correct the problem.
Chrysler, Jeepand Dodge owners who service their automatic transmissionsare advised to have the transmission control module flashmemory restored to OEM standards following completion ofthe service work.
This type of service must be completed bya Chrysler, Jeep or Dodge dealership or qualified servicedepartment trained in Chrysler, Jeep and Dodge INC.has determined that the problem with hardshifting evident immediately after servicing Chrysler automat-ic transmissions with AMSOIL ATF is due to the transmissioncontrol module record of the mechanical service.
Failure toreprogram the TCM flash memory following automatic trans-mission services will result in the outlined performance issue.
AMSOIL Synthetic Universal Automatic Transmission Fluid(ATF) is formulated to exceed the performance requirementsfor domestic and foreign automatic transmission fluids, and itis recommended for transmissions requiring MOPAR ATF+type oils, including ATF+3 (MS-7176) and ATF+4 (MS-9602)fluid specifications required by Chrysler, Jeep and Dodge, aswell as many other domestic and foreign specifications.
AMSOIL INC.recommends having the TCM flash memoryreprogrammed (flashed) or the Quick Learn procedure per-formed after servicing any Chrysler, Jeep or Dodge automatictransmissions from the year 1992 to present.
Per Chrysler, theQuick Learn procedure recalibrates the electronic TCM sys-tem to provide the best shifting operation.
Quick Learn mustbe performed by the dealer or transmission repair shop usingthe DRBIII scan tool and scan tool cartridge.
The procedurewill correct and prevent the abnormal shifting issues that occurwhen servicing automatic transmissions.
This procedure, andthe solution to remedy the shifting problem, cannot be accom-plished just by disconnecting the battery Description:
AMSOIL Synthetic Universal Automatic Transmission Fluid (ATF)Subject:
Erratic shifting problems in Chrysler automatic transmissions occurring immediately after changing transmission fluidSubmitted By: AMReviewed By: DP/AA
Approved By: Alan AmatuzioApproval Date: 1 of 1Technical Service Bulletin
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