In the refrigerator compartment, remove the 2 mounting
screws that hold the control housing in place—support the housing as you remove the second screw so the control housing doesn't fall and damage components.
Lower the control housing slowly.
Using a slot screwdriver, release the locking tabs and then
unplug the wire harness.
Because the connecting rod for the diffuser is still connected, so you may be unable to pull the control assembly completely out of the refrigerator.
Disconnect the wire harness.
Release the locking tabs on the freezer side of the diffuser.
Push the diffuser toward the refrigerator compartment slightly to keep the tabs from snapping back into place.
In the refrigerator compartment, pull the control housing
and diffuser out and down to completely release those components.
Work the control rod out of the diffuser. You might have to
rotate the diffuser 90 degrees to release the control rod.
Remove the diffuser.