mine sqeaks on the rubber that goes alont the bottom of the glass, what i do it put some Armorall on a rag and wipe it where the rubber meets the window, it might make the window a little dirty the first few times but that help for a while, i have to do it every 6 weeks or so.
i had a 2 liter of sprite go nuts in my front seat, i used that 409 orange stuff for the kitchen, i sprayed a hefty amount down there that got rid of the sticky. however it used to do that before the spilll and i used armorall very liberally. the squeak goes away but smears your glass so that needs attention.
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