NHTSA Service Bulletin 10164971: 2017, 2020 Fleetwood Bounder

The purpose of this exemplar message is to inform the selling dealers of certain Class A diesel motorhomes, manufactured by REV Recreation Group between May 31, 2019 and June 10, 2019, about the need to seal the area around the entry step cover on certain Class A diesel motorhomes. On the affected motorhomes, the additional sealing of the entry step cover is necessary to prevent wind noise and unwanted air flow into the passenger area. To correct the issue, a 35? piece of aluminum angle, supplied by REV Recreation Group, is to be installed; afterwards, the area is to be sealed with sealant (black 3M #540 or Sikaflex 221) and expandable foam. A total of 9 motorhomes, offered for sale in the United States, were affected at the time the dealers were contacted; a total of 7 U.S. dealerships were contacted. REV Recreation Group opted to email and call the dealers rather than publish a service bulletin, due to the small number of affected units and the practicality of addressing the matter quickly, before the vehicles were retailed. The reference in the exemplar message to either a ?fixed? generator or ?sliding? generator is in regard to the style of tray to which the generator is mounted; ?fixed? refers to a stationary generator tray; ?sliding? refers to a generator tray that slides on rails out of an opening in the fascia in the fiberglass front cap. Depending on which style of generator tray is installed, the procedures vary as to the method of accessing the area (located above the generator) where the piece of aluminum angle is to be installed.