1997 Oldsmobile how to remove mounting device button on rear view mirror when there is no set screw?

To remove the mounting device button on a 1997 Oldsmobile rearview mirror without a set screw, gently pry off the plastic cover that may be concealing the mounting mechanism. Once the cover is removed, look for a small clip or a spring mechanism that holds the button in place. Carefully push or release this clip while simultaneously pulling the button away from the windshield. If needed, use a flat-head screwdriver for leverage, but be cautious not to damage the glass or surrounding areas.