Jeep Grand Cherokee Owner's Manual page 530

528 MAINTAINING YOUR VEHICLE
Rear Wiper Blade Removal/Installation
1. Lift the pivot cap on the rear wiper arm upward, this
will allow the rear wiper blade to be raised off of the
liftgate glass.
1 — Wiper Arm
2 — Pivot Cap
NOTE: The rear wiper arm cannot be raised fully
upward unless the pivot cap is raised first.
2. Lift the rear wiper arm upward to raise the wiper
blade off of the liftgate glass.
3. Grab the bottom of the wiper blade and rotate it
forward to unsnap the blade pivot pin from the wiper
blade holder.