2022 GRAND DESIGN MOMENTUM Suspension Problems

NHTSA – Complaint filed 7/24/25 ODI #11675985 1.Pin box movement within the upper deck, sagging geometry. 2.Entry door opens during travel despite safety bar being engaged. 3.Entry door is difficult to close and does not stay secured even when locked while stationary. 4.Passenger-side main slide partially opens during travel. 5.Passenger-side main slide is separating from the camper; frame is damaged, floor plywood is exposed and deteriorating. 6.Suspension wet bolts cracked on all six tires due to excessive wear from frame flex; all replaced. 7.Exterior garage door (near front cap) bows outward, opens during travel, and is difficult to secure even after Grand Design’s previous replacement. 8.Master bedroom dresser is detaching from the wall; sides are collapsing. 9.Washer/dryer doors no longer align; they remain open during travel due to changed dimensions. 10.Multiple interior wall cracks. 11.Master bedroom floor is sagging and produces loud noises underfoot. 12.Nails protruding through walls throughout the camper. 13.Ceiling and wall trim detaching throughout the unit. 14.Loft near the main slide is separating from the wall.

The issue with the frame having issues causing a safety concern and interior damages. When the frame over flexes it will stress other components, walls, trim, and cabinets.

There are several things starting off with frame flexing issue causing numerous of parts to fail and move out of place. The manufacturer did a repair of this and my confidence in it being repaired correctly is very low. I do not feel safe towing this RV anywhere. Second, the broken leaf spring on the front axle. This could have caused the vehicle to lose control and cause a serious accident. It has been repaired. We have had the entry doors come open on us during towing. Nothing was lost from this. Lastly, the master bedroom slide has come out about 3 inches during travel. They repaired the inside bottom brace at the service center.

Multiple systems failed on this unit. Trailer Brake failure—The rear trailer brake wires were discovered to be severed inside the wheel drum from the factory. For the first year of use they were inoperable. This was suspected and confirmed with a thermal camera. The tow vehicle also alarmed “Check trailer brakes” while driving. A dealer inspected them and found the wires severed. This was repaired. Suspension failure—the rear driver side leaf spring broke on a paved highway 9 months after purchase. Pulled over immediately to inspect the issue and repair it. On 2 other separate occasions, we found broken wet bolts (after the unit was sitting in one place, unmoved for weeks). Also a cracked equalizer was replaced under warranty within the first year. The front passenger side leafspring also broke on an empty unit. Frame Failure & opening baggage compartment doors, slide out backing out in transit—symptoms of excessive upperdeck flex and frame failure began immediately upon purchase. Baggage compartment doors frequently open in transit. This has been a significant safety risk to the operator as well as other drivers. On more than one occasion the doors open in dense traffic in the middle of a city with nowhere to safely pull over. None of the contents of the compartment has fallen out to our knowledge, but could very easily fall out since none of the doors can be adequately secured. One door was replaced, but the issue not resolved. Upon further inspection, there were severely broken welds in the frame of the unit. The unit has sustained over 22 hours of welding on it to repair and reinforce the damaged frame. However, this has been repaired a total of 3 separate times. There is no guarantee that the repairs will hold moving forward. Also a result of the broken frame, the slide out began backing out in transport. Before leaving, the slide out was fully retracted and measured. Upon arrival the slide would be backed out 0.5-1” from the pre-departure measuremen

This unit is suffering from frame failure. Cargo doors have started opening on the freeway, cabinets are rubbing the wallpaper from frame flex, the forward floor has started squeaking, the forward lower exterior trim panel on the drivers' side is buckling, the forward walls have started creaking and popping when hitching up/unhitching and the pin-box "sinks" more than it ever did in the past when hitching up. I am very worried since these are all symptoms of frame failure. I've taken the unit to an authorized Grand Design repair center and so far, am not getting any support from Grand Design to actually fix the frame, the root cause for all of these symptoms. I'm worried if I accept the trailer and continue to use it, the problem will progress and we could end up with a complete failure while on the freeway.

The front frame has been in for repairs before for flexing issues/excessive movement. We have had a door pop open during travel and suspension parts break (hanger and leaf spring) in 2 separate incidents. The frame appears to have further issues on the passenger side more recently.

The RV has significant frame failure that Grand Design (the manufacturer) is ignoring. I noticed my floors warping and a cabinet crack. There was also some cracking of the fiberglass. I asked the dealership to check it out. The found that the frame is warped, multiple lagbolts are missing and several welds have popped. The RV is unsafe and not road worthy. Grand Design is aware of this issue and has yet to issue a recall or notify owners of the significant structural defect they caused by undersizing the frame and using the wrong lagbolts.

A spring snapped in two near the mounting point to the frame. Rv was not overloaded. Grand design authorized replacement of all springs which is now complete. Others have had similar failures. Im guessing the metal used was too brittle. The busted spring can cause the rv to pull sideways a bit making safe controlling on the highway a possible hazard to everyone on the highway. An accident could occur endangering everyone around the rv with failed suspension. I managed to catch the failure before any injuries occured.

Upper deck failure ( side pod door opens when in transit, front of trailer at king pin mounting flexing when in transit, king pin mounting hits truck bed rails when turning, bedroom floor buckling, bed rollers leave indentations in bedroom floor closet door not plumb and will not lock when disconnected from truck, front wall height changes when connected to truck, trim and panels coming loose in transit. ). Wall to frame mounting has loose, missing and wrong size lag bolts. Inspection is available upon request. Door popping open in transit is a safety hazard for myself and everyone on the road. The vehicle has been to two different dealerships and the representatives at both mentioned frame issues as part of the problem. The first issues were noted at 2,000 miles on 9-19-2021

Frame flex issue outside spec dealer said they fixed it but it comes back.

The contact owns a 2022 Grand Design Momentum. The contact stated that the RV was purchased brand new and taken to the residence, where the contact noticed that the front driver's side nose had detached at the fifth wheel pin location. The RV was taken to the dealer, where it was repaired; however, the failure recurred while the RV was still at the dealer. The RV was repaired. Additionally, the contact stated that the sliding doors were not opening and closing properly due to the frame flexing. The contact stated that the suspension was fractured and was making abnormal popping and creaking sounds. The contact stated that the washing machine was leaking water. The contact also stated that there was excessive propane consumption. The dealer determined that the propane was leaking through the rear of the refrigerator and another point of leak was identified. The contact later received an email from the Grand Design RV CEO advising that the frame warranty had been extended to 5 years. The contact stated that the Extended Warranty repairs included installing braces, bolts, and welding the frame. The RV was not repaired. The manufacturer was not notified of the failure. The failure mileage was 700.

Mileage: 700

Frame started to flex excessively in the king-pin area and on the inside, above the king-pin area. Issue was confirmed by independent RV dealer. The movement exceeded Lipperts stated limits for the frame to flex. After consulting with Grand Design and Lippert, instructed to take RV to local Grand Design dealer for further inspection and repair. Dealer found broken welds on the frame, broken bolts attaching side wall to frame, and missing bolts intended to attach wall to frame. After authorization by Grand Design and Lippert, Lippert send repair tech Onsight to repair. Broken welds were repaired with additional steel added to frame and missing/broken bolts replaced.