Can you be more specific? Do you have a diagram that I can look at to see if mine has a gasket there or not?
its real simple...pull off the sail panel on the inside- its the triangular piece that covers the mounting bolts. if u want remove the bolts (dont drop the bottom one inside the door panel or you will be taking that off too) and or just loosen them to pull the mirror back and there should be a gasket between the mirror and the door. but if its not there then it could create a wind noise inside witht he window up...not much to do about wind outside the truck...
if u do a search on the tow mirror swap, its possible to get to that bolt without door panel removal. alot of us have done it. just pull the panel out and use a wrench on it and a magnet so as not to drop it. i'd hesitate to use sealant for the mess it will make if you ever want/need to take the mirror off but its your truck...but that bolt is possible to access w/o removal, but as u probally know, its almost as easy to pull the panel, should take 5 minutes tops....sometimes thats easier than taking the risk of dropping it down in there anyway.
well...just an idea..i cant picture it since i have tow mirrors but is there enough of a flat spot somewhere in that crease to put a very small thin piece of self adhesive weather stripping so that it compresses and fills the gap when the mirror is swung back out into position?
