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April 1, 2010 Service bulletin

Kia: ECM upgrade for improved shift quality-equipped with 2.4L engine and a/t. provides the procedure to...

Kia technical service bulletin TSB-067 for 2009-2010 Kia Optima.

Bulletin number
TSB-067
Component
Engine and engine cooling: engine
Summary
Kia: ECM upgrade for improved shift quality-equipped with 2.4l engine and a/t. Provides the procedure to upgrade the engine control module (ecu) of some vehicles with 2.4l engines. Complaints of poor shift quality/pattern during up shifts and down shifts; this upgraded logic will reduce those complaints.

Owners of these vehicles have filed 27 complaints in the engine category.

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