The rear view mirror in a Ford F-150 pickup is attached to a small steel mounting tab on the windshield. This mounting tab is affixed to the windshield with a special glass adhesive. The mirror slides onto this tab from the top and is held in place by a small steel set screw. The rear view mirror is made from hi-impact, ABS plastic. Replacement rear view mirrors are available from auto parts stores, automotive salvage yards and licensed Ford dealerships.
Shut down the engine and place the transmission in park (automatic) or first gear (manual). Apply the parking brake.
Loosen the set screw holding the mirror to the windshield mounting tab using a torx screwdriver.
Move the mirror up and off the mounting tab.
