Service bulletins for the 2021 Forest River Columbus
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.
9 on file from NHTSA, as of 2026-10-19.
By type
By component
| 4101598 | 2023-03-03. Service bulletin. EQUIPMENT. The backsplash may warp from the heat of the range. |
|---|---|
| 4101371-S | 2022-06-14. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER; STRUCTURE. Possible poor seal insulation at the return air portion and/or air duct or trunk line of the air conditioner. |
| 4101430 | 2021-11-01. Service bulletin. EQUIPMENT:APPLIANCE:ELECTRIC WATER HEATER; EQUIPMENT:RECREATIONAL VEHICLE/TRAILER:LPG SYSTEMS:WATER HEATER. Water Heater Configuration. |
| 511377 | 2021-09-07. Service bulletin. ELECTRICAL SYSTEM. As per Lippert Components Technical Service Bulletin 11-004-21. The slide room actuator was assembled incorrectly, which may cause the room to become stuck in the out position and prevent from fully retracting. |
| 410-04012016-016 | 2021-06-07. Service bulletin. EQUIPMENT:RECREATIONAL VEHICLE/TRAILER:PLUMBING:POTABLE WATER:STORAGE TANK. Certain Columbus CMF383FB and CMF383FBC have been manufactured so that the shower drains into the solid (commonly known as the black water) waste tank. The shower should drain into the liquid (commonly known as the grey water) waste tank. |
| 410-04012016-016 | 2021-06-07. Service bulletin. EQUIPMENT:RECREATIONAL VEHICLE/TRAILER:PLUMBING:POTABLE WATER:STORAGE TANK. Certain Columbus CMF383FB and CMF383FBC have been manufactured so that the shower drains into the solid (commonly known as the black water) waste tank. The shower should drain into the liquid (commonly known as the grey water) waste tank. |
| 410-04012016-016 | 2021-06-07. Service bulletin. EQUIPMENT:RECREATIONAL VEHICLE/TRAILER:PLUMBING:POTABLE WATER:STORAGE TANK. Certain Columbus CMF383FB and CMF383FBC have been manufactured so that the shower drains into the solid (commonly known as the black water) waste tank. The shower should drain into the liquid (commonly known as the grey water) waste tank. Forest River will re-route and splice the drain line so that the shower drains into the proper waste tank. |
| 831334 | 2021-06-02. Service bulletin. WHEELS. It was discovered that the manufacturing plant did not cut a stress relief line in the upper deck Driver Side and in on certain models, Passenger Side under the slide room(s). The upper deck in the Impression Fifth-Wheel needs to flex, without the "stress relief cut" the sidewall filon may crack under the slide room(s). |
| 4101316 | 2021-04-01. Service bulletin. EQUIPMENT. The black tank flush may have been plumbed backwards. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.