2023 GRAND DESIGN MOMENTUM Complaints

In 2023 we purchased this RV. Recently, we discovered that the cargo carrying capacity is incorrect by about 900 pounds, subject to Recall 23V-428. Grand Design knew of this defect before the rig was sold; however, they didn’t remove the vehicle from the dealers lot, nor were we ever contacted by Grand Design. Grand Design knew of the issue in June 2023, and we purchased our rig in July 2023. We also have had the rig in for repairs for broken leaf spring supports and now they’ve done some welding on our frame because of frame flex issues.

Front of 5th wheel movement caused by excessive frame failure, inspection shows 1/2" out of compliance. Lag screws around interior upper deck backed out and have to be tightened regularly, soft spot in floor between bathroom and upper deck bedroom. Additional body screws needed in garage area to hold skin in place. Front jacks angled.

The contact owns a 2023 Grand Design Momentum. The contact stated that while driving at an undisclosed speed, the entry side doors unexpectedly opened. Additionally, the slides of the trailer occasionally unexpectedly extend without operator input. The contact stated that the front frame of the RV was cracked. The RV was taken to the dealer, where it was diagnosed with structural failure of the front frame. The contact was not informed whether the frame could be repaired or needed to be replaced. The RV was not repaired. The manufacturer was made aware of the failure. The approximate failure mileage was 5,000.

The contact owns a 2023 Grand Design Momentum. The contact stated that the trailer was shifting on the frame. The contact stated that the welds, bolts, and frame were fractured, and while driving, the frame flexed unexpectedly. The trailer was taken to the local dealer, but the diagnosis was not provided. The trailer was not repaired. The manufacturer was contacted, but no assistance was provided. The failure mileage was unknown.

The front of our grand design momentum fifth wheel camper has sustained some structural failure. Our bedroom slide will no longer stay closed when driving down the road. Our storage doors will also open every now and then when we encounter rough bumps or rough roads. We began to notice some small damage inside the front bedroom of the unit as well. The camper has been untowable for nearly 6 months, with no help from the manufacturer. Even though the have issued an extended warranty for like issues.

The contact owns a 2023 Grand Design Momentum RV. The contact stated that the RV had experienced structural failures with the upper deck bedroom and upper deck bathroom. The contact stated that the RV failure was caused by the frame flex, which caused the floors in the bedroom and upper bathroom to squeak and sag while walking on the floor. The contact also stated that the failure had caused the seal around the bedroom window to become defective. The RV was taken to an RV dealer for repair. The contact sent several letters to the manufacturer about the failure. The contact received a response from the manufacturer that a response from the dealer was needed to proceed with any repair of the vehicle. The contact discovered Technical Service Bulletin: 24-001, which the contact linked to the failure. The RV was not yet repaired. The failure mileage was unknown.

The contact owns a 2023 Grand Design Momentum RV. The contact stated that the RV had experienced structural failures in the upper deck bedroom. The contact stated that the RV failure was caused by lag bolts that had backed out and become unsecured. The contact stated that the bedroom nightstand moved and pulled away from the bedroom wall due to the structural failure. The manufacturer and dealer were not yet notified of the failure. The RV was not yet repaired. The contact was informed of Technical Service Bulletin: 24-001; which addressed the failure. The failure mileage was unknown.

Overview: This complaint is being submitted in response to alarming and persistent structural failures experienced in our 2023 Grand Design Momentum fifth wheel RV, purchased new in January 2023 from Lazydays RV in Tampa, FL. Despite receiving a factory service bulletin (TSB) and subsequent repairs under warranty, our unit has continued to exhibit excessive frame flex, wall and floor deformation, compromised slide operations, and related structural issues. The failures not only impact the unit’s functionality and safety but raise concerns about a broader systemic issue with the frame design and manufacturing integrity of Grand Design RVs. Our documented repair history and recurring defects suggest these problems stem from substandard frame construction and flex-related design flaws, rather than isolated workmanship errors. Final Remarks: We are not the only owners reporting these failures. Online forums and recent class action filings against Grand Design point to a concerning trend of recurring frame failures that the company appears unwilling or unable to resolve comprehensively. As consumers, we have exhausted all reasonable efforts to seek a resolution through the manufacturer and authorized third-party repair channels. It is our belief that these ongoing frame flex problems represent a safety hazard and require urgent federal oversight and regulatory action to ensure no further units are sold with such defects. We welcome a physical inspection of our unit by NHTSA representatives in the Richmond, Virginia area at your earliest convenience

This RV has experienced ongoing water intrusion due to faulty manufacturer-installed plumbing fittings and hoses, which allowed leaks into the interior. Moisture has reached electrical wiring, creating a serious fire hazard and contributing to unsafe living conditions. Essential components—including the furnace, refrigerator, and water heater—have proven unreliable or unusable throughout the ownership period. Mold growth has appeared due to the persistent damp environment. This has caused health issues, including respiratory difficulties, headaches, brain fog, and fatigue, with heightened risk due to a pre-existing asthma condition. Structural issues include misaligned exterior doors that fail to seal properly and loud creaking/popping noises during hitching, suggesting possible frame or chassis integrity problems. Equipment failures include a non-functional center awning, persistent sewer odor (suggesting a failed ventilation system), and malfunctioning A/C and heating units. Despite multiple inspections and documented findings from Grand Design–approved technicians, the manufacturer has offered only limited, pre-approved repairs that fail to address root causes. These problems severely impact the safety and habitability of the RV, which is used as a full-time residence. The manufacturer has declined a full inspection, replacement, or buyback. No warning lamps appeared, but symptoms began shortly after purchase and have worsened. The RV remains available for inspection. We request a formal investigation into possible safety standard violations.

The contact owns a 2023 Grand Design Momentum RV. The contact stated that while the trailer was parked at a campground, he became aware of gaps in the front body panel. Additionally, the pin box and front landing gear were not leveled with the ground and the primary bedroom had excessive frame flex. The trailer was taken to the dealer, where the front body panel was disassembled, and the bolts replaced. The failure persisted, and the trailer was taken to Great American RV Super Stores (12167 Interchange Dr, Grand Bay, AL 36541), where it was discovered that the front body panel and frame bolts were the incorrect size and the bolts were replaced with larger bolts. The manufacturer was made aware of the failure. The failure mileage was approximately 12,000.