It is only necessary to lower the headliner. Only do those step in headliner replacement that will lower the headliner enough to gain access to the part. Refer to
Headlining Trim Panel Replacement
.
Disconnect the sunroof drain hose from the sunroof module spigot.
3
Sunroof Drain Hose Plug
4
Sunroof Drain Hose
Procedure
Installing the drain hose, ensure that the routing of the end of the drain hose is through the access hole in the cowl panel to prevent interior water leaks.
Install the 2 retainer that secure the drain hose to the windshield pillar.