The mirror glass hangs on four clips and must move upward to be released. If you are replacing the glass, look at the back side of the new part to understand better what you are trying to do. First adjust the mirror glass upward to point toward the sky, then insert a large flat screwdriver working across the bottom edge of mirror and gently prying up on the handle to release the clips. You must then adjust the mirror downward to slip it forward out of the slots. Unplug connecting wires. To install, plug in wires then with power mirror base facing downward align the clips on the back of glass to the slots on power mirror base, you will need to power the mirror to the sky upward position then gently pry down on the glass to lock in the tabs using the flat blade screwdriver again. Gently pry down on the handle until the clips lock. DONE!