I recently found myself at the Palomino Sabre (a Forest River company) factory checking on some repair work that was being done to my camper (which is a post for another day). While there, I met with both the warranty manager and plant manager quite a bit during the day. Towards the end of the day, after many of the workers had gone home, the warranty manager took me on a tour of the factory. We started with the building of walls, moved onto preparing the chassis and following along as they assembled the interior of the camper and built the walls up through finishing work. As a computer geek, it was really awesome to watch campers take shape.
After the manufacturing is done, the warranty department’s job kicks in. One thing that they do is test every piece of equipment sent back by dealers to verify its broken-ness. As explained, it helps keep dealers honest and is supposed to ensure/encourage them to more properly diagnose issues rather than just swapping parts out.