Liberty 2WD V6-3.7L (2008)
PROM - Programmable Read Only Memory: Customer Interest
Engine, A/T Controls - Torque Converter Clutch Shudder
NUMBER: 21-017-07
GROUP: Transmission
DATE: October 26, 2007
THE StarSCAN(R) FLASH FILES FOR THIS BULLETIN ARE AVAILABLE VIA THE INTERNET.
StarSCAN(R) SOFTWARE LEVEL MUST BE AT RELEASE 8.03 OR HIGHER FOR THIS BULLETIN.
SUBJECT:
FLASH: Torque Converter Shudder On NC Engagement/Disengagement Or Torque
Converter Shudder When Switching From Unlock To Partial Or Full Lock
OVERVIEW:
This bulletin involves selectively erasing and reprogramming the Powertrain Control Module (PCM) with new software and enable transmission quick
learn with StarSCAN(R).
MODELS:
2008
(KA)
Nitro
2008
(KK)
Liberty
NOTE:
This bulletin applies to vehicles equipped with a 3.7L engine (Sales Code EKG) built before October 23, 2007 (MDH 1023XX) for both the U.S.
and International Models.
SYMPTOM/CONDITION:
Torque converter shudder on NC engagement and disengagement or torque converter shudder on torque converter pull-ins. Pull-ins are when the torque
converter goes from unlock to partial or full lock condition.
DIAGNOSIS:
Using a StarSCAN(R) with the appropriate Diagnostic Procedures available in TechCONNECT, verify all transmission Systems are functioning as
designed. If the vehicle operator describes the Symptom/Conditions and they can be verified, perform the appropriate Repair Procedure.
SPECIAL TOOLS / EQUIPMENT REQUIRED:
REPAIR PROCEDURE - USING StarSCAN AND THE INTERNET TO RETRIEVE THE FLASH FILE:
NOTE:
Before performing this Repair Procedure, the operating software in the StarSCAN(R) must be programmed with software release level 8.03 or
higher. The software release level is visible in the blue header at the top of the StarSCAN(R) screen.
NOTE:
