2021 Grand Design Momentum
Problems, recalls and owner-reported issues
Structure is the leading concern among 57 owner complaints filed for this model year. This is the highest complaint count among 11 Momentum model years with reports.
Of the 2021 reports, 1 involved a crash.
What owners report most often
Recalls and investigations
Suspension, front, springs, leaf spring assembly, u-bolt, leaf spring to axleJan 26, 2026
Grand Design RV, LLC (Grand Design) is recalling certain 2021-2024 Momentum and 2022-2024 Solitude Fifth Wheel trailers. The U-bolt may become loose due to inadequate preload and preload losses, causing the axle to move out of position.
An axle that moves out of position can cause a loss of vehicle control and increase the risk of a crash.
Dealers will replace the axle attachment components, free of charge. Owner notification letters were mailed May 15, 2026. Owners may contact Grand Design customer service at 1-574-825-9679. Grand Design's number for this recall is 910054. This recall supersedes NHTSA Recalls 23V490 and 24V193.
Campaign 26V044000 on NHTSA.gov
Suspension, front, springs, leaf spring assembly, u-bolt, leaf spring to axleJul 17, 2023
Grand Design RV, LLC. (Grand Design) is recalling certain 2021-2024 Momentum and Solitude fifth wheels, equipped with certain CURT 7000 and 8000 lb axles. The U-bolts may have been improperly tightened, which can cause the axle to move out of position.
An axle that moves out of position can cause a loss of vehicle control and increase the risk of a crash.
Dealers will inspect and tighten the U-bolts, as necessary. Any damaged components will be replaced. Repairs will be performed free of charge. Owner notification letters were mailed August 16, 2023. Owners may contact Grand Design customer service at 1-574-825-9679. Grand Design's number for this recall is 910039.
Campaign 23V490000 on NHTSA.gov
Equipment, appliance, refrigeratorJan 28, 2022
Grand Design RV, LLC (Grand Design) is recalling certain 2013-2021 Momentum, Solitude, and Reflection recreational vehicles. A 110-volt wire in the refrigerator cabinet may be improperly secured, which could result in the wire contacting the refrigerator cooling unit, causing an electrical arc.
An electrical arc increases the risk of a fire.
Dealers will inspect and replace any damaged wiring, and properly secure the wires, free of charge. Owner notification letters were mailed on February 21, 2022. Owners may contact Grand Design customer service at 1-574-825-9679. Grand Design's number for this recall is 910026.
Campaign 22V038000 on NHTSA.gov
Equipment, recreational vehicle/trailer, lpg systemsMay 26, 2021
Grand Design RV, LLC (Grand Design) is recalling certain 2016-2021 Imagine, Transcend, and Momentum travel trailers. The LP regulator that controls the LP gas pressure may fail, allowing excessive gas pressure that causes the appliance flame to increase.
Excessive gas pressure and a larger than intended appliance flame can increase the risk of a fire.
Dealers will replace the LP regulator, free of charge. Owner notification letters were mailed June 24, 2021. Owners may contact Grand Design customer service at 1-574-825-9679. Grand Design's number for this recall is 910023.
Campaign 21V393000 on NHTSA.gov
Representative owner complaints: equipment
3 reports, newest first. Show all
Structure, Latches/locks/linkages, Equipment, Jul 8, 2026
I am reporting a serious, progressive structural defect involving excessive frame flex and structural failure on a 2021 Grand Design Momentum 395MS fifth-wheel RV. This complaint directly aligns with the ongoing NHTSA investigation PE24-0209. The unit exhibits clear and worsening structural integrity failure, including: Slideouts and doors open during transport. Upper deck walls moving under load Lag bolts missing or backing out and pushing through flooring At least one critical structural bolt missing from factory installation Floor deformation and slope changes in the upper deck Slide-out malfunction due to frame distortion Loud popping and snapping noises while towing consistent with frame flex or structural separation These conditions reflect loss of structural integrity under normal use and represent a serious safety hazard, including risk of catastrophic failure while towing. On June 24, 2026, Lippert (frame/component supplier) assigned Case #6876203 and scheduled a mobile service inspection. This Grand Design Momentum 395ms is not safe to tow. It is a danger on the roads and they need to be recalled at the least for inspections of the frame for damage.
Latches/locks/linkages, Equipment, Mar 30, 2026
The contact owns a 2021 Grand Design Recreational Momentum. The contact stated that while hauling the RV and driving at undisclosed speeds, the rear side door unexpectedly opened and the slide-out extended outward. No warning light was illuminated. The trailer was taken to a local dealer and remained with the dealer for additional inspections. The RV was not repaired. The manufacturer was made aware of the failure. The failure mileage was unavailable.
Equipment, Other or unspecified, Feb 7, 2025
Main doors coming open - currently bungee cording , cargo doors coming open - currently bungee cording, slides coming out a couple inches, leaf spring broke during travel on interstate, open case with Grand Design since January 22, 2023, case # 00621051 and Grand Design has not been helpful in addressing these issues. An RV tech confirmed frame flex symptoms: sawdust from nose of rv in interior, furniture rubbing on walls moving bac and forth, broken cabinets coming out of ceiling, missing screws.