Hi All, in addition to my '72 Vista Cruiser, I run a '86 Caprice Estate Wagon. As these cars were badge engineered between the divisions with minimal differences, and the motor is a real Olds, I'm hoping you'll count it as an honorary Custom Cruiser! It is showing a few signs of ageing but I have the history from new and it is still going strong at 120k plus miles - over 20k for me in the last 12 years. That generation of full size RWD cars wasn't the sexiest, but GM really did get the basics right. However I have one recent problem that's driving me crazy. The driver's interior rear view mirror has taken to falling off and I can't get it to stay stuck to the windshield for more than a few weeks at a time. I am using 3M VHB adhesive pads, which should be sufficient for the weight of the mirror, and I'm prepping the glass beforehand with white spirit (alcohol). What do I need to do to achieve a lasting bond again? Thanks! Robert Green

 

You need to use rearview mirror adhesive to reattach the base to the windshield.

 

I used this kit when the rearview mirror fell off of the windshield in my 96 98.

https://www.oreillyauto.com/detail/c...ive/per0/09102

 

I use JB Weld windshield adhesive and it has held up just fine in two of my cars. Sold at most auto parts stores. It sets up quick so you don’t have to sit and hold the tab for long.

 

Every auto parts store sells an interior mirror bonding kit like this. Be sure you get all the old adhesive off the glass and the button. I wipe both down with lacquer thinner before applying the primer.

 

First use a magic marker or wax crayon to draw an outline of the mirror location on outside of the windshield. Then you need to remove the mounting button from the mirror base. GM usually uses an allen head setscrew. Fords use some kind of weird spring release thing.

Razor-blade all the old adhesive off both the glass and the mirror's mounting button, then clean with isopropyl alcohol or acetone and allow it to dry. Then put the primer in the kit on both parts. Once that's dry put a drop of adhesive on the button and press it to the windshield for about 30 seconds.

Let the button dry in place for several minutes and then put the mirror base back on the button. Tighten the setscrew but be careful not to overtighten. That adhesive is pretty strong and I've seen windshields crack from someone overtightening the setscrew.

Use alcohol or acetone to clean the magic marker and any excess primer and adhesive off the windshield and you're all set. Might add that once you mark the mirror location, it's a good opportunity to clean the inside of the windshield while the mirror's out the way.

Both my Custom Cruiser and my 93 F150 were horrible about the mirror falling off the windshield. Usually had to reattach them every 3 years or so. They'd always fall off without warning and startle me too.

 

Thanks so much. As the 3M adhesive pad didn't work I'm trying Permatex, which was recommended here. Fingers crossed! Robert

 

Thanks - I'll try this brand and hope for better luck that with the 3M!

 

Thanks for the detailed response RocketRaider. Will try the Permatexl Robert

 

Thanks - JB Weld is available here and I'll give it a shot if the Permatex doesn't work! Robert