NHTSA vehicle safety data

2021 Forest River Sierra Recalls & Complaints

The 2021 Forest River Sierra has 1 NHTSA recall campaign and 3 owner complaints on file as of November 3, 2026. Recall repairs are usually free at an authorized Forest River dealer.

NHTSA recall and complaint data for the 2021 Forest River Sierra. Recall data is refreshed daily from NHTSA.

2021 Forest River Sierra owner complaints

Owners have filed 3 complaints with NHTSA about the 2021 Forest River Sierra, describing incidents dated July 1, 2021 to July 22, 2023.

Most-cited components

Electrical System 1 complaint
Firerelated 1 complaint
Service Brakes 1 complaint
Unknown or Other 1 complaint

Of the 3 complaints on file, 1 reports a fire (owner-reported, not verified by NHTSA).

Newest complaints

ODI #11535600 · Filed July 31, 2023
Recently I had the glass over my dining table shatter. My concern is not that it shattered, but the size of the shards.Although the glass shattered only after I shut the door on the trailer. It is my understanding that per ANSI Z26.1 that each shard should weigh no more than 4.25g. And anything…
ODI #11434758 · Filed September 28, 2021
The contact owns a 2021 Forest River Sierra Model 379FLOK travel trailer. The contact stated that while the travel trailer oven was in use, the heat vent on the back of the oven melted the backsplash. The travel trailer was not diagnosed nor repaired. The dealer and manufacturer were not made aware…
ODI #11427488 · Filed August 2, 2021
The contact owns a 2021 Forest River Sierra fifth wheel trailer. The contact stated while driving approximately 55 mph, the trailer brakes failed to engage while the brake pedal was depressed. The contact stated that the "trailer wiring fault" message was displayed. The vehicle was diagnosed and…

Read all 3 complaints

Trailer Floor Improperly Secured to Chassis

NHTSA #21V378000 · Structure — Frame and Members · NHTSA notice

Reported May 24, 2021 · Forest River, Inc.

Potentially affected: 18 vehicles

Repair completion: 61.11% (latest rate the manufacturer reported to NHTSA; dataset updated November 3, 2026)

Forest River campaign 03-1347 · Owners notified June 9, 2021

Defect description

Forest River, Inc. (Forest River) is recalling certain 2021 Sierra and Sandpiper Fifth Wheel and Travel Trailers. The bolts that hold the floor to the chassis were improperly tightened.

Safety consequence

Improperly tightened bolts could cause the trailer body to detach from the chassis, increasing the risk of a crash.

Manufacturer remedy

Dealers will tighten the bolts to the chassis outriggers, free of charge. Owner notification letters were mailed June 9, 2021. Owners may contact Forest River customer service at 1-574-534-4574. Forest River's number for this recall is 03-1347.

Notes

Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.

try.vin has no NCAP crash-test rating on file for the 2021 Forest River Sierra. NHTSA rates some vehicles by body style — pickups by cab, vans by roof height — so check nhtsa.gov/ratings.

3 owner complaints have been filed with NHTSA for the 2021 Forest River Sierra.

Unknown or Other

ODI #11535600

Incident: July 22, 2023 · Filed: July 31, 2023

Recently I had the glass over my dining table shatter. My concern is not that it shattered, but the size of the shards.Although the glass shattered only after I shut the door on the trailer. It is my understanding that per ANSI Z26.1 that each shard should weigh no more than 4.25g. And anything larger is a sign that the glass was not tempered properly. I reached out to Forest River who reached out to the Lippert the manufacturer. The are claiming the glass is not covered. But they did not address the tempering of the glass. I still have the glass and have photos of the glass and photos of of some shards and their weight.. Please look into this.

Firerelated

ODI #11434758

Fire

Incident: September 28, 2021 · Filed: September 28, 2021

The contact owns a 2021 Forest River Sierra Model 379FLOK travel trailer. The contact stated that while the travel trailer oven was in use, the heat vent on the back of the oven melted the backsplash. The travel trailer was not diagnosed nor repaired. The dealer and manufacturer were not made aware of the failure.

Electrical System; Service Brakes

ODI #11427488

Incident: July 1, 2021 · Filed: August 2, 2021

The contact owns a 2021 Forest River Sierra fifth wheel trailer. The contact stated while driving approximately 55 mph, the trailer brakes failed to engage while the brake pedal was depressed. The contact stated that the "trailer wiring fault" message was displayed. The vehicle was diagnosed and repaired. The manufacturer was informed of failure and was awaiting a response.

Other Forest River Sierra model years

Check your 2021 Forest River Sierra VIN

Not every recall applies to every VIN in a given year. Enter the 17-character VIN from your Forest River Sierra at nhtsa.gov/recalls to see whether your specific vehicle has an unrepaired recall.

Check a Forest River VIN