I am trying to install a new rearview mirror, and the old mirror's mount thats glued to the windshield is the wrong size. How to I get the old one off the windshield so an can put a different sized one on? Thanks

 

Here are the directions out of my Fisher Body Manual (the GM division that engineered and assembled everything from the firewall back)

1. Remove rear view mirror from support.

2. Protect windshield glass adjacent to mirror support by placing water dampened asbestos cloth or powdered asbestos paste on inside of glass around support.

3. From inside of glass, heat mirror support with an air blower type heat gun to 250 to 350 degrees; then, carefully exert gentle sideward pressure on support with pliers until it disengages from glass.

IMPORTANT: Care must be exercised during this operation because insufficient heat will not free mirror support, and pressure on support many result in damage to glass. If excessive heat is applied, plastic laminate in windshield glass may become damaged.

4. After removal of rear view mirror support carefully scrape any remaining traces of adhesive from glass surface.


We all know asbestos products are no longer available but maybe something made out of fiberglass will work.

 

just soak it with nail polish remover,it shoyuld come right off,if it doesnt then try some other adhesive removers.

or let me borrow your car for a day,all my mirrors fall off shortly after i drive them for the first time.

its happened about 4 times so far[4 diffrent cars],it gets real old to be driving and have the mirror just fall off.

 

I hit the buttom with heat (butane bottle type torch) for three or four seconds and the buttom easily twisted off with pliers--don't over heat or you'll damage the windshield. Proceed cautiously and you'll be ok.

JamesC