The process for replacing the rearview mirror in your Buick LeSabre is the same as that for most vehicles manufactured since the 1980s. The mirror in your LeSabre bolts onto a small metal bracket which is glued to the windshield. Removal of the mirror from the bracket requires a Torx driver. A Torx driver is similar to a screwdriver, but it has an eight-pointed star at its head. Find a Torx driver at your local hardware store if you don't already have one, and you can proceed with the replacement of your LeSabre's rearview mirror.
Push the mirror lens upward so it faces the roof of your Buick LeSabre.
Place the eight-pointed star head of the Torx driver into the setscrew located in the base of the rearview mirror. Turn the Torx driver counterclockwise. This releases the clamping pressure on the mirror.
Slide the mirror upwards to remove it from its metal bracket.
Place the base of the replacement mirror against the windshield, directly above the metal bracket. Slide the mirror down into the bracket. The bracket has a groove on each side into which the mirror will slide.
Secure the mirror to the bracket by tightening the setscrew clockwise with the Torx driver.
