2021 Grand Design Momentum Latches, locks and linkages Problems
- Complaints
- 9about this part
- Share
- 16%of 58 total for the year
- Median mileage
- 10,500miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 9 complaints about the latches, locks and linkages of the 2021 Grand Design Momentum, 16% of the 58 complaints for this model year. Where a mileage was given, the median is 10,500 miles.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“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. …”
NHTSA complaint #11749089, filed 2026-07“The contact owns a 2021 Grand Design Momentum RV. The contact stated while the RV was parked and occupied, or while driving the RV, there was an abnormal popping and creaking sound coming from the frame of the RV while depressing accelerator pedal or depressing the brake pedal. Neither a dealer nor an independent mechanic was contacted. The contact stated that while driving the RV at an undisclosed speed, the doors opened independently. Additionally, while walking inside the RV, there was an abnormal sound coming from the floorboards. …”
NHTSA complaint #11684821, filed 2025-09, 6,000 miles“Frame failure and structure. Cargo door opened while traveling. (safety issue) furniture separating from structure. Broken overhead cabinets over bed (safety issue) wall separating from floor in cargo area wood dusting from ceiling in bedroom and garage area.”
NHTSA complaint #11664700, filed 2025-06“The contact owns a 2021 Grand Design Recreational Momentum RV. The contact stated while driving 55 MPH, the RV frame flexed. The contact stated that when the RV was loaded, the failure persisted. The contact stated that the screws to the bedroom slide out were detaching. Neither an RV dealer nor an independent mechanic was contacted. The vehicle was not taken to a dealer or an independent mechanic to be diagnosed. The vehicle was not repaired. The manufacturer was notified of the failure and informed the contact to bring the RV to a technician to be inspected. The failure mileage was 15,000.”
NHTSA complaint #11696350, filed 2025-10, 15,000 miles“Side compartments opening while towing unit on highway…items in compartment flying out …hatches won’t closed properly to much gap…big gap also on top cap where it connects to wall in front..unit taken to lazdays Tampa for frame flex recall…inspection revealed major cracks in frame everywhere as a result causing major frame flex…lots of welding is being done…by grand design mechanic ..slide system also damaged as a result of frame flex …unit is currently still at lazdays Tampa being welded together…they keep finding more and more damage …. …”
NHTSA complaint #11636185, filed 2025-01Latches, locks and linkages: other model years
Other parts of the 2021 Grand Design Momentum
42 complaintsOther or unknown
27 complaintsSuspension
19 complaintsEquipment
3 complaintsBrakes
2 complaintsElectrical system
1 complaintsExterior lighting
1 complaintsTransmission and drivetrain
1 complaints
← All problems reported for the 2021 Grand Design Momentum
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology