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.
Position the trolley cable assembly (3) to the front track assembly (2).
Install the window guide cables (5) with the green ends and the sunshade cable (3) to the drive cable tubes (1) at the front inner edge of the sunroof motor/actuator compartment.
Push the cables evenly to the full rearward position within the track.
Guide the cables into the sunroof motor/actuator assembly drive tube.
Install the front track cam (4) to the front track (1). Lock the front cam (2) to the front track assembly.
Install the retainer assembly (2) to the driver tubes (1, 5).
Secure the bottom half of the retainer to the track (3).
Position the front track assembly to the underside of the sunroof frame.
Ensure that the tracks are parallel.
Loosely install the track screws.
Do not install the 2 rear sunshade assembly screws (2). The screws will be installed when the sunshade assembly is installed.