2021 GRAND DESIGN MOMENTUM Complaints

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.

After a trip we noticed that when we had the rv connected to the truck, the front closet would not close. There was also cracking on the nose cover of the rv. We (my wife and I) had a problem with the cargo doors and entry doors coming open on other trips and lost stuff on the highway so we talked to the rv dealer to get a frame inspection. what was found was that the frame was broke in a few places and the door side wall of the camper was not attached. We have also had the rear spring hanger break the year before while driving almost pulling me out of the lane I was traveling in. The camper is sitting at the dealers now because it cannot be towed, and the dealer will not weld the frame due to liability. missing and broken bolts in the frame and body were also discovered.

Our 5th wheel had broken welds on the drivers side of frame in early 2023 that were repaired at the factory. There is now a service bulletin for a lag bolt inspection, we brought it to a dealership for inspection and it was determined many lag bolts are either missing or broken which means our side walls have been probably attached to the frame. It was also discovered the the frame is flexing outside of the acceptable parameters and there are cracked welds now in the passenger side. We were told it is unsafe to move the 5th wheel at this time. We are awaiting feedback from manufacturer.

Excessive frame flex in pin box area of fifth wheel. Forward left cargo door unlatching while towing. Vehicle is currently at Lazydays dealer in TN for inspection and TSB for excessive frame flex. Inspection has revealed major structural cracks and structural failure in upper deck steel frame structure. Vehicle has been deemed unsafe to transport and must be repaired in place or partially repaired for transport to factory. We noticed excessive deformation of the pin box and substantial rubbing of internal cabinets, etc upon return from a recent trip. Based of the damage, it would have been possible for the RV structure to separate from our tow vehicle putting us and others on the road at significant risk of injury or death. We saw indications of interior movement of cabinets and rubbing on walls for several thousand miles, but no indication of significant pinbox deflection until recently. Manufacturer has provided no guidelines or communication to owners to be aware of potential problems or to indicate things to look for that may indicate the vehicle poses a serious risk/hazard. Initial signs of rubbing inside the vehicle, and a loose latch and flapping of cargo door were observed in January 2024. We have video of substantial gap opening and movement of interior cabinets when taking vehicle off of stabilizer jacks and loading onto fifth wheel hitch of truck. Unable to get additional pictures currently as the RV is at the dealer for repairs. Will attempt to get photos of internal frame damage early next week if possible.

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 …. You guys should send an inspector to inspect it to see major frame damage from poor frame build I believe unit is unsafe to be roadworthy with the amount of welding and repairs to frame the keep doing

I am experiencing major frame failure. My propane doors on both sides have opened while towing. Gotten so bad i had to duct tape them shut. Not safe pulling over to do this. The main cause of this happening is Frame Flexing which i can confirm with a video i took. I can also see my frame flexing while hitching and unhitching trailer. My top floors are squeaking badly which is indicative to my frame bending and breaking welds. Doing research I have seen pictures of other trailers the same year with broken and cracked frames. This poses a safety issue while towing as i feel the trailer can break away from the tow rig and cause some serious damage.

I own a 2021 Grand Design Momentum 381m. In august of this year we found broken welds and bolts in our RV frame. The dealer we took it to told us grand design has known about the issue for several years but refuses to issue a recall, instead they issued a service bulletin. GD told us on the phone, there have been no catastrophic failures yet, so there is no need for a recall. Blue Compass RV in Prescott, AZ, at the direction of GD, welded the frame and told us it was good to drive back home to Florida. Once back in FL, we took the RV to the dealer we purchased it from to have the cabinets repaired, the frame flexing caused damage to the cabinets in the front of the RV. The dealer told us the frame was not fixed and needed to go to the factory in Indiana for repair. We have been unable to use our RV for 3 months now. We are currently waiting for our RV to be transported to the GD factory on 8 Jan 2025.

Due to excessive frame flex, multiple welds have broken and the trailer walls are coming apart from the main frame. Vehicle is currently in for repair, but if the hitch had broken while towing, or if the walls had completely separated while towing, the result would have been a serious, and potentially fatal, accident.

The frame and suspension on our 2021 Grand Design is failing. The frame on the upper deck has broken welds and there is visible movement in the upper deck when hitching and unhitching. The furniture inside the main bedroom move when hitching and unhitching. The side walls have started to detach from the frame as evidenced by screws backing out or breaking. The suspension has bent components. The frame is also bending in the right front. The hitch visibly moves into the upper deck when hitching.

I had noticed the Pin Box flexing, especially over bumps or any rough road or bridge approach. As it got worse I could tell we a lot of flex in the frame area where the Pin Box is located. I contacted the dealer and they examined our RV and determined the frame was flexing due to the bolts connecting the chassis to the actual frame of the RV body being to small and working loose/broke. The dealer replaced the bolts with larger bolts and advised the flex is now within specifications. It is better but it's not great by any means. I'm concerned as the RV gets older the condition will get worse and could even become hazardous. This condition has already affected the value of the RV and when it's out of warranty I'll have no recourse other than to fix it myself.