2019 Grand Design Momentum Other or unknown Problems
- Complaints
- 10about this part
- Share
- 67%of 15 total for the year
- Median mileage
- 100miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 10 complaints about the other or unknown of the 2019 Grand Design Momentum, 67% of the 15 complaints for this model year. Where a mileage was given, the median is 100 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.
“We were in route to assateague for the weekend when our awning somehow opened & detached from our camper while driving at highway speed on rt 50 in maryland. I believe it failed due to being blown open by the wind, but I am unsure. When it detached, it violently flailed around damaging the exterior of the trailer. We were on the chesapeake bay bridge when the event occurred with the awning flailing around by cars & the bridge structure. …”
NHTSA complaint #11205775, filed 2019-05, 100 miles“I have a 2019 Grand Design Momentum 399TH that has frame flex. We have put in a compliant to Grand Design themselves and had them inspect it. It was confirmed to have had frame flex, twice. The first time it was 'fixed was April of 2024 at Grand Design Service Center. The second time was November 2025 at Happy Days RV Service Center. During the second time of being fixed our exterior drivers side wall had cracks in it as well, they are now refusing to fix the wall stating that because of the tow vehicle we have and the pinbox we currently using. …”
NHTSA complaint #11766896, filed 2026-09“Excessive Frame Flex/Failure& Structure I am reporting multiple serious structural and safety issues with my Grand Design RV that appear consistent with excessive frame flex and failure, as outlined in NHTSA Investigation PE24029. These include: Significant movement of front bedroom cabinets during travel, indicating internal structural instability of the walls. Large gaps in both the interior and rear toy hauler doors, which compromise insulation and safety concerns. Cracked and misaligned front entry door, even after manufacturer replacement. …”
NHTSA complaint #11667314, filed 2025-06“my suspension failed with the leaf springs breaking and the shackles and bushings failed then the frame is breaking( flexing). all fasteners were loose and some missing the body came loose from the frame... this is a issue with many other grand design 5th wheels ... hopefully the parts that fell off on the freeway did not hurt anyone... ( leaf springs)”
NHTSA complaint #11579614, filed 2024-03“Frame failure on fifth wheel deck. Noticed when hooking RV to tow vehicle that the pin box would move upward roughly 1 inch. Also when hitched to tow vehicle would notice that all cabinets in front bedroom would move to the point of damaging walls and causing the doors to bind and hit the ceiling. …”
NHTSA complaint #11627546, filed 2024-11Other or unknown: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2024 | 3 | 27% |
| 2023 | 7 | 28% |
| 2022 | 16 | 48% |
| 2021 | 27 | 47% |
| 2020 | 16 | 55% |
| 2019 | 10 | 67% |
| 2018 | 4 | 57% |
| 2017 | 2 | 15% |
| 2016 | 4 | 40% |
| 2015 | 2 | 40% |
Other parts of the 2019 Grand Design Momentum
9 complaintsElectrical system
3 complaintsLatches, locks and linkages
2 complaintsSuspension
2 complaintsFuel system
1 complaintsWheels
1 complaints
← All problems reported for the 2019 Grand Design Momentum
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Nov 1, 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