No definitive root cause. Still comes and goes. Dealer thinks it’s the molding/trim of the slide creaking and groaning as the RV moves, I’m not convinced.
I have noticed sometimes the slide extends a very small amount driving down the road (fractions of an inch). When that happens I sometimes think the noise is noticeable but haven’t proved it.
Bottom line, something associated with the slide is making the noise but not fully understood.
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