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Home >> Kia >> 2012 >> Optima SX >> Repair and Diagnosis >> Transmission >> Transmission Control Systems >> Automatic Transaxle Control System - 2.0L >> Transaxle Control Module (TCM) >> Repair Procedures >> Replacement
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Repair Procedures: Replacement

  1. Turn ignition switch OFF.
  2. Disconnect the negative (-) battery cable.
  3. Disconnect the TCM connector (A).
    Fig 1: Identifying TCM Connector
    G07379816Courtesy of KIA MOTORS AMERICA, INC.
  4. Remove the TCM (C) after removing the mounting bolts (A) and nut (B).

    TCM installation bolt/nut: 

    9.8 ~ 11.8 N.m (1.0 ~ 1.2 kgf.m, 7.2 ~ 8.7 lb-ft)

    Fig 2: TCM, Mounting Bolts & Nut
    G07379817Courtesy of KIA MOTORS AMERICA, INC.