Sorento 4WD V6-3.8L (2009)
PROM - Programmable Read Only Memory: Customer Interest
A/T Controls - Bumping/Bucking On TCC Application
Model Sorento [BL]
Group Automatic Transaxle(52)
Number KT2008052102
Date Tuesday, March 10, 2009
Area N. America
Subject
2007-2009MY Sorento (BL) TCM Reprogram (Trans - 021 Revised)
Description
This service bulletin provides information related to the Transmission Control Module (TCM) upgrade for 2007-2009 Sorento (BL) models. Some
2007-2009 Sorento (BL) vehicles with a 3.3L or 3.8L engine which may experience a "bumping" symptom during engagement of the damper clutch
(torque converter lock-up clutch), and a "bucking" symptom when the damper clutch is fully engaged.
To correct this condition, the TCM should be reprogrammed using the GDS download as described in this bulletin.
NOTICE:
Global Diagnostic System (GDS) users should access the "Notice" function from the GDS Main Screen for instructions reguarding ECU upgrade events.
NOTICE:
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A fully charged battery is necessary before TCM upgrade can take place. DO NOT connect a battery charger to the vehicle during TCM upgrade.
Make sure the blower motor is "OFF" during TCM upgrade.
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All TCM upgrades must be done with the ignition key in the "ON" position.
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Be careful not to disconnect any cables connected to the vehicle or GDS during the TCM upgrade procedure.
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DO NOT start the engine during TCM upgrade.
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DO NOT turn the ignition key "OFF" or interrupt the power supply during TCM upgrade.
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When the TCM upgrade is completed, turn the ignition key "OFF" and wait 20 seconds before starting the engine.
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ONLY use approved TCM upgrade software designed for the correct model, year and engine size. Failure to do so may create other driveability
issues due to the use of the incorrect TCM calibration.
