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Service bulletin 770622

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10130200
Published by NHTSA2018-03-13
Manufacturer's number770622
Manufacturer's date2018-01-30
NHTSA componentENGINE

NHTSA's summary

The manufacturing plant installed the winterization valve on the pressure side (vehicle side) of the water pump. The winterization valve should have been connected to the intake/suction side of the water pump. If the waterlines and water using components are not appropriately winterized from freezing, the components and waterlines may crack, break, etc. potentially voiding the component manufactures warranty.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Engine

Vehicles listed
FOREST RIVER NO BOUNDARIES2018

Listing a model year does not mean every vehicle of it is concerned: the document says which.