Unplug the harness underneath (passenger's side).
Unplug the harness from heater/AC flap motor located underneath (arrow). Then remove the motor to release the harness by unscrewing 3 bolts (oval).
The motor was removed.
The first set of harness is almost free from the HVAC unit. The other end is connected to blower fan.
After cutting off the upper half of foam on the blower fan trim (the pic will be shown later), remove 3 bolts holding blower fan using 5/16 socket (oval). Remove the fan with harness.
More Heater Core Replacement
4x4 Off-Road Homestead Firearms RC Flying