2019 Grand Design Momentum Problems

The contact owns a 2019 Grand Design Momentum 49M hitched to a 2017 Ford F-350. The contact stated that while the RV was parked, the driver’s side bedroom slide-out failed to extend as intended. The RV was taken to a dealer, where the failure was linked to frame flex. The contact was informed that there were four cracks in the frame of the RV. The RV was not diagnosed. The contact stated that the manufacturer was notified of the failure. The failure mileage was approximately 30,000. The VIN was not available.

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. Generator compartment door fails to lock properly, likely due to excessive frame flex/frame misalignment. Screws popping out of the front cap and a visible crack in the front cap corner. Bedroom slide failure due to internal twisting. Main slide floor detaching from the bottom. Persistent latching issues with the main entry door, even when the RV is perfectly level. These issues not only affect the usability of the RV but also pose serious safety risks while in transit. The structural instability could lead to doors opening unexpectedly, slideouts extending, or components detaching on the road—endangering both occupants and other drivers. I urge the NHTSA to include this case in its ongoing investigation and to consider a recall or mandatory corrective action for affected Grand Design RVs.

The kitchen side slide out hydraulic cylinder burst/ruptured while under pressure due to the incorrect length bolt being used in the slide out rotating cross shaft. The bolt wore a hole in the cylinder over a 3 year period, and the cylinder shot hydraulic fluid all over the under belly of the trailer. Hydraulic fluid sprayed several 120-volt and 12-volt electrical connections and wires, and also leaked out of the side of the chloroplast. The fluid would have leaked onto the wheels and brakes if it had been in motion when the cylinder failed. Also, the entire hydraulic system is combined, so this caused a total loss of pressure in the front landing gear/jacks and leveling system. So many possible safety issues with this. Grand Design acknowledged the issue and reimbursed me for the parts, but I feel obligated to report this. It actually happened when the new owner (I just sold it) came to pick up the trailer. Others on an internet discussion group found the exact same issue.

TL* THE CONTACT OWNS A 2018 (NA) GRAND DESIGN MOMENTUM TRAILER. THE CONTACT STATED THAT THERE WAS A FAILURE WITH THE FLOOR HEATER. THE HEAT CAUSED THE FLOOR TO TURN BROWN, WHICH PRESENTED THE RISK OF A FIRE. IN ADDITION, THE ROOM SLIDEOUT FAILED TO SLIDE BACK IN. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURES. THE DEALER WAS NOT CONTACTED.

2019 Grand Design Momentum 397ms (VIN: [XXX] ) I am having to file this NHTSA (potential frame failure) complaint with assistance from Pete West, who is acting as my RV consumer advocate due to the fact that my husband, who was unarmed snd violently shot and killed on [XXX], by an off-duty Ft. Lauderdale police officer, right in front of me in our RV park over an RV park management dispute. I have reached out to Pete West ([email protected]) for his assistance with this. Our/my RV was purchased “used” from General RV in June 2024. There are a wide variety of other non-related issues to this complaint that will be addressed with the dealership and Grand Design directly. Front main door comes open during transport Cargo doors have also come open during transport and had to resecure them. Slide-outs do partially come out during transport Upon hitching truck up to the pin box noticing pin box movement up into the upper deck (unclear about amount of pin box movement). We have also noticed electrical outlets (kitchen island and bedroom) got burned out for no foreseeable reason (inoperative) and concerned about potential fire. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The contact owns a 2019 Grand Design RV. The contact stated while driving at an undisclosed speed, the RV the front and rear doors inadvertently opened. The RV was taken to the dealer but was not diagnosed; however, the dealer informed the contact that the doors had been repaired. The contact stated while driving at an undisclosed speed, the rear tires blew out. There was no warning light illuminated. The contact pulled over the RV and noticed that the rear axle had fractured. The dealer was contacted. The RV was not diagnosed or repaired. The vehicle was not diagnosed or repaired. The manufacturer was made aware of the failure. The failure mileage was not available. The VIN was not available.

The contact owns a 2019 Grand Design RV. The contact stated while driving at an undisclosed speed, the RV the front and rear doors inadvertently opened. The RV was taken to the dealer but was not diagnosed; however, the dealer informed the contact that the doors had been repaired. The contact stated while driving at an undisclosed speed, the rear tires blew out. There was no warning light illuminated. The contact pulled over the RV and noticed that the rear axle had fractured. The dealer was contacted. The RV was not diagnosed or repaired. The vehicle was not diagnosed or repaired. The manufacturer was made aware of the failure. The failure mileage was not available. The VIN was not available.

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)

Our RV completly filled with the smell of propane when manually switching propane tanks while the furnance was running. The smell was coming from furnance vents. We checked the stove and the flame on the burner was unusually several inches higher in height. There no smell of propane in the exterior compartments or vents and isolated to the inside of the RV. All windows were opened and the furnance turned off to vent the RV to remove the gas smell. We believe this to be a propane regulator malfunction.

DRIVING DOWN HIGHWAY I-10 FROM NEW BRAUNFELS, TEXAS TO HOUSTON, TEXAS. THE FIRST TIRE BLEW OUT ON PASSENGER SIDE OF OUR NEW FIFTH WHEEL RV.