Ours (38FLSA) does the exact same... makes loud noise when extending/retracting and noise like something is knocking on wall when the wind moves it... first time I heard noise from wind was in the middle of the night and I thought there was an animal dropping something on the roof, went outside with a flashlight and standing on picnic bench looking at roof, finally figured out it was the awning..
I have lubed the track and the little rollers on the end of arm with no luck or change in sound.. I'm thinking it may be coming from one of the scissor joints or where the gas strut attaches, I just haven't had a ladder handy to reach up to try and lube them..
2016 Pinnacle 38FLSA
2015 2500HD Duramax