There is a metal channel that the glass slides into, it has rubber that the glass sits into & the two nuts attached that the bolts secure the the glass
But what secures it to the two metal channel pieces? I know that there is rubber there, but mine is completely trashed. I was wondering if there was an adhesive on it.
On my truck the glass channel has a fabric seal rather than rubber. The way it’s supposed to work is the seal grabs the glass by friction and holds it to the channel. Over time this seal will break down allowing the glass to pull free. The only solution I found is to run a bead of silicone inside the channel, then set the glass in place. It’s very IMPORTANT that you position the glass correctly in the channel. Factory manual will tell you how many inches of glass should project from both the leading (front) edge of the glass to the channel and trailing (rear) edge of the glass to the channel. This measurement is critical if you want your window glass to raise and lower equally in the side channels. Get it wrong and your window glass can jump out of the side channels.
I have not had to mess with the window sash on my Toyota. But on all of my other vehicles where this rubber was missing, I cut up a bicycle inner tube and used pieces. It grips well and can be folded multiple times if needed depending on the width of the sash to match the thickness of the original rubber.
