My Carefree Traveler Awning was making noise on one side when extending or retracting. I also had noise when the wind came up slightly which was causing the one side to sort of bounce against the mounting track. I noticed that the tension on the noisy side was less than on the quiet side and traced the problem to the gas strut.
I've seen mention of having to replace the entire arm when the strut goes bad and also saw where the strut could be simply unscrewed. I determined that my model could be unscrewed so after a lot of research as to which strut to order I picked one from Amazon (my favorite one-stop shopping source).
I measured my old strut while installed and its extended length was around 34" give or take. I almost ordered a 36" strut but that would have been wrong. The actual extended strut length was 43" as it was partially compressed when the awning was at full extension.
The strut easily unscrewed from its mount on the gas tube side. As soon as I got it unscrewed it snapped below the mount (could have gone either way) and was pressed there due to gas pressure in the strut. No big deal.
I had to use pliers to start unscrewing the rod from the awning arm but left it only partially screwed in until I could get a volunteer to help remove the strut.
My son was able to compress the old strut enough to move it above the mount that it screwed into on the track attached to the side of the rig. Once above the mount it was easily raised high enough to release all gas tension. Then the strut was easily removed from the other end.
Installing the new strut was the reversal. I removed the ends that came installed on the new strut since the old mounts were to be used. Screwed the new strut into the arm mount while the strut was aimed above the track mount. To compress the strut and allow it to be screwed into the track end required 2 strong young men to pull on it. I was there helping a bit by holding up the awning as high as I could. Anyway they easily compressed the strut and screwed in into the mount.
With the new strut installed, which had a lot more pressure than the old worn one, the extending/retracting was now quiet and the tension in the track matched the other side. Happy days!
I've attached some info to help anyone who might be faced with the same situation. The awning picture shows what the arm and strut looks like for this model.