My sliding rear window rattles really bad when my bass hits. Is there any way I could tighten it or something?

 

Try using some type of foam to isolate it

 

They have weather stripping that has a sticky side (used for house doors/windows) try to find the thinnest one you can and apply it to the back side of the sliding windows (doesn't take very much, just a piece at each corner and maybe one on the edge of the middle).

 

Switch to bluegrass.

 

LOL even bluegrass rattles like crazy! I got lots of sound for a single cab

 

Install a new window rubber. It's pretty easy if you take your time and don't puncture it. My old window trim was worn thin at the bottom. When I installed my new sliding rear window, the rubber from the truck I salvaged it from was in better shape than my original. The window has to be touching metal somewhere. Other wise it would be insulated via the rubber and you wouldn't hear anything. If you've got a rattle, you've most likely got a leak as well and chancing rust.

 

It rattlers where the glass sliding part meets the glass that is stationary. Not around the bottom and too the seals in good condition

 

OOOOOOOOOOOOHHHHHHHHHHHH........Lowes and Home Depot sell a roll of window buffer trim, don't know the exact name of it. It is like a weather stripping. One side sticks to a pane of glass, the other side is a fabric like material that buffers the other piece of glass. Made exactly for two panes of sliding glass!

 

What type of setup are you running I. A regular cab to make it rattle that much?

 

this is what I'm running