Mike, I sealed mine without removing it. Here's what finally worked for me. I bought a large tube of 3m window sealer, I sealed extensively around upper and lower window. On top of that I sealed the a pillar drivers side. After that 2 coats of brush on flex seal coating to the drivers side bottom about to midway on window bottom. Then to finally deal with problem, I removed plugs from Gem module, and fuse box, squirted in dielectric grease on both plugs. As a final precaution, I wrapped both the fuse box, and Gem with plastic bags. I've been through some pretty intense storms, and all seems well. I didn't want to pay someone to screw up my 18 year old window, so I screwed it up myself! My way worked.
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