Hey there fellow trucksters , I need some help with replacing the rear quarter glass (driver's side) on my 1998 Sierra (ext cab 3 dr.) . I've searched hi and low through the interwebs and these forums and can't find a decent video or step by step on how to replace the glass (the side I want to replace has the mirrored finish, I just want to replace it with the stock looking tinted window that it originally came with). Can the glass itself be replaced without taking out any of the gasket material? Anyone here that can give me some direction on it? Thanks!