Had a slide rubbing and the noise made travel very unpleasant. Tried lube, looked for loose structure, verified the awnings were all secure .... over time, we found some scrub marks that were not initially observable.
As a resolution we purchased some teflon strip that is sold in rolls to be used as glider surface for drawers. We used double back tape to hold the teflon in place and like magic, the noise went a way.
So, you might be able to permanently eliminate your noise if the surfaces making the noise are isolated with a teflon barrier.
Note - a stethoscope might help you find the noise source. They are available at auto parts stores for a reasonable price. The one we purchased was less than $20.
The teflon strip was available at Rockler Wood Working and Hardware. It was about $50 for a 2" wide roll.
Travel Safe and with a Smile! Pat
2020 Tiffin Breeze 33BR
2022 Cherokee Trailhawk toad