Does anyone know: when replacing rear slider window(in the frame),can silicone adhesive hold the window in?,some trim is missing thanks! Susan

 

I'd use the butyl sealer. Seals well, doesn't need to cure/dry, and provides a bit of cushion. I also don't think silicone adhesive will be thick enough. In other words it'll narrow the gap between the window frame and body. this may sound like a good thing, but i think all the trim that goes around the window on the inside will be loose.

But to answer your question, I'd think silicone adhesive(not silicone caulk) would hold it in. Miserable to remove if you ever need to pull that window again, though.
Edit:
I had trouble finding Butyl tape that was approx 1/4" wide(per FSM), so I ordered 1/2" off Amazon. I then uncoiled 2-3 feet at a time and lay on wax paper. Then using a razor blade i sliced down the middle.
The nice thing about the Butyl tape is overall it's easy to work with. You can reposition, and if joining two cut ends you can press together. You also don't need to rush, it's not gonna dry out. And unlike a more liquid adhesive(caulk gun) there is nothing to clean up afterwards. Plus, if you mess up and have to start over. just scrape the old off with a putty knife, then use a rag with gasoline to wipe the residue off. Gas works MUCH better than brake cleaner, acetone, or paint thinner. Ask me how I know
The side windows behind the slider use Butyl also, just a little wider, 3/8"(bought 3/4" and sliced)

 

Thanks for that. I appreciate the input

 

Would think windshield adhesive would work well.

 

Urethane intended for windshields would work. I used that to install my windshield moldings. But it cures relatively quickly, so gotta move fast. And cleaning up whatever urethane oozes out wouldn’t be fun. You’ll have literally zero clean up with butyl. Butyl is probably cheaper, and whatever is left over you just put on the shelf in the package it came in. It’ll be fine and ready to use ages later. It doesn’t harden and go bad

 

True. Clean up can be a pain when using liquid sealants. That's why I now pre-fit the items to identify the needed adhesive coverage area, then apply blue painter tape to all other exposed surfaces. I tape the hell out the area, as I tend to make a mess. The tape makes for a clean edge and very little clean up. Just did that to my windshield chrome trim to seal up gaps. Love me some blue painters tape.