Turn ignition switch OFF.
Disconnect the negative (-) battery cable.
Disconnect the ECM connector (A) and TCM connector (B).
Remove the TCM & ECM after removing the bolts (C) and nut (D).
TCM installation bolt/nut:
9.8 ~ 11.8 N.m (1.0 ~ 1.2 kgf.m, 7.2 ~ 8.7 lb-ft)
Remove the TCM (B) after removing the bolts (A).