Repair procedures: Replacement

Turn ignition switch OFF.
Disconnect the negative (-) battery cable.
Disconnect the TCM connector (A).

Fig 1: Identifying TCM Connector
Courtesy of KIA MOTORS AMERICA, INC.
Remove the TCM after removing the mounting bolts (A-2ea) 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: Identifying TCM Mounting Bolts And Nut
Courtesy of KIA MOTORS AMERICA, INC.