GRAND DESIGN Complaints

We are victims of frame failure. First sign was a creaky floor in the bedroom. Screws worked their way out of the wood flooring and pushed up underneath the linoleum. The movement of the nose cap pushed screws out of the trim and seal piece on the underside of the front cap. We reseated screws, upgraded screws, resealed this at least 5 times and now use gorilla tape to avoid water intrusion. The underbelly has fallen down while traveling so we had to reinforce this ourselves. Our driver side bay door will fly open when traveling. It locks but the locks will not hold it closed when the rig starts to flex. We now gorilla tape the door every time we travel to avoid objects flying out of our bay into traffic. The partition between the wet bay and the storage bay has bent. Our front driver side jack is not straight, it points outward. There is rubbing of the shelving and trim in the bedroom. The board that has the slide rollers under the main bed has failed. We have pinched decals on the exterior of the nose cap. The pin box sinks up into nose cap when hitched up. We have a toy hauler however we do not haul any vehicles or toys in our rig. We have had to replace both back leaf springs due to them failing. The main lighting panel has been damaged in transit so that the exterior accent lights will no longer turn off. This is an electrical hazard as well as an annoyance to anyone that camps near us. The roof seal that attaches the roof membrane to the front cap is elevated and not flush. When traveling from TX to Indiana for our frame failure appointment, the roof membrane completely shredded and fell back over the air conditioner. We had to gorilla tape the remaining roof to make it the rest of the way. Grand Design is not issuing a recall yet. Our rig is dangerous for us and anyone on the road with us. Our rig is in the shop right now and we have the highest hopes that it is properly fixed, and we do not have to return like so many others are.

Mounting bolts from frame to Rv front sidewall are in 3/8” lag bolt mounted in pine wood (all are striped, won’t tighten). This allows the complete front Rv wall to move allowing further frame issues. Holes in frame rail are 1/2” , grand design installed smaller lag bolts 3/8” this has caused the bolts to eventually fail. This is happening on approximately 30% or more of Grand Design RVs. The factory needs to provide a recall on this problem.

The large slide that has the fridge and dinette has a inadequate schwintek slide mechanism that fails and leaves the buyer to fix out of their own pocket. About all of the floor plan 28BH has this problem. Grand Design may attempt to fix it but it's a bandaid. I have had to pay out of pocket to get the VROOM system to replace the schwintek system along with everyone else that has it. The schwintek slide system is weak and problematic as it strips gears, looses timing and burns up motors. We have only used our camper for going on three years.

2020 Grand Design 390 RK Noticed trim molding under bedroom area of 5th wheel rv had dropped from original position, on both sides of the trailer, in approximately same location. Took to a Grand Design dealer who inspected unit and stated there was a frame flex issue. After two weeks of the unit being at the dealership, Grand Design decided to send a factory technician to examine the rv and its issue. The rv has full body paint which has caused concern to remove the front cap and damage the paint scheme for inspection. Awaiting result of tech's examination. Reading another reported incident for a 2020 Solitude, we have also had the seam at the top of the front cap where it meets the roof 'pop' the screwed in metal strip securing the two together. I repaired this and re-sealed the repaired area. We have also had the outrigger braces above the axles, on both sides of the trailer, bend and/or crack welds where they were attached to the frame. Upon notification, Grand Design stated I would need to contact Lippert for possible reparation for the repairs. Eventually Grand Design agreed to pay for the materials to repair these outrigger braces and I paid for the labor. There is also a TSB for rear floor support. From the factory there was one cross brace support installed in the space over the rear drawer slide, and the screws mounting the brace were not tightly secured. I had two additional cross braces fabricated and I installed them in this same area to provide additional support.

front frame failure, yes, trailer is sagging in the front, inspected by insurance co., no warning

Our trailer is experiencing frame flex/and or frame failure. The front of the trailer is separating and also is affecting the bedroom sidewall. Also, the shackle broke and an equalizer broke. These are all know issues with Grand Design Momentums.

There was excessive frame Flexing in the nose section of our 5th wheel. I inspected the lag bolts in the front section of our 5th wheel that hold the wall to the frame and found 4 bolts missing of the 12 that are supposed to be installed. Also, the bolts that were installed were undersized. I also have damage to the inside wall and cabinets from over-flexing during travel. I have not contacted a dealer of the manufacturer but have been following many other individuals on forums who have had similar issues. I have not had my unit inspected yet, but plan to start the process with Grand Design. The warnings were trim pieces falling off after travel days and damage to the interior wall. I also replaced screws on the outside cap that loosened, and some fell out.

Serious frame failure issues. Upper deck of trailer is separating from cross members to lower frame. Pin box has signs of excesive flexing, when hooking to truck, it sinks back into the frame well over 1.5”. Creaking noises coming from floor in front broom area as well as bathroom. Continues to get worse

There are hairline cracks in the frame / Axle hanger(s), throughout the entire inside floor there are drops / gaps when a level is put down of a minimum of 1/8" - showing symptoms of frame flex / failure. On the road, the trailer produces excessive sway, bounce, and movement at speeds of 45 mph and above to the point where control has almost been lost on the roadway. It has been towed and tested with 3 different vehicles (2019 F250 Diesel, 2022 F450 Dually Diesel, and 2023 F250 Gas). documentation, video proof, Multiple witnesses, and different drivers all with over 7+ Years up to 30+ years' experience have tested this and have come up with the same results. Upgrades were made to both tow vehicle(s), Hitch(es), and trailer as suggested by Grand Design RV. Grand Design has stated after investigation that the axles on this unit were installed 5" out of the normal manufacturing of a Momentum 31G and there is a 1/2" difference between the driver's side front axle hanger and rear passenger side axle hanger. Trailer has been weighed multiple times with various loading procedures to make sure everything was evenly distributed side to side and front to rear. The trailer has not been overloaded yet the leaf springs were flat before upgraded to heavier weights. Tires have shown uneven wear patterns. Hitches have been set up in various positions per manufactures requests without any success. Grand Design has not taken responsibility nor attempted to fix the issues with the unit even with the proof submitted to them. Instead, they have been combative, dismissive, and try to bully their way out of their responsibilities. I've invested my own funds over the course of 3 years to attempt at rectifying the issue with no success. My family will not even travel in the same vehicle as me because they fear for their safety as I do as well as the safety of everyone on the roadway. This, however, does not concern Grand Design as they've unprofessionally stated to me consistently.

Our 5th wheel RV has had frame flex (frame failure) 4 separate times. The manufacturer has "fixed" it 3 times unsuccessfully. We have just owned this for 3 years and due to the length of time in between reporting to the manufacturer and waiting for repairs, the RV has been broken more than not during ownership. The pinbox is currently flexing due to broken welds on the frame and causes interior and exterior damage to the unit each time it is towed.