Originally Posted by americasweets
We have a 2015 29V tt th. On our way to TX and last night the driver side panel started bulging out. It was late and we didn't notice it. It's on the slide side above the bedroom window. This morning we put it back together and added some painters tape to hold it in place. Does anyone know what could cause this. We plan to have the dealer look at it when we get to TX.
From your description its sounds like delamination. In the RV sides the outside panel, the alum framing, the foam between them and the interior wall surface are "laminated with adhesive and then pressure bonded with heat to fabricate one strong section. In your case could be the glue, heat or pressure was not correct in that area and have become loose. Huge job to change a sidewall, best left to the factory.