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.

Source: NHTSA complaint ODI #11602039 · view all complaints for this vehicle at nhtsa.gov

I am submitting this complaint regarding a 2022 Grand Design Momentum 381, that is exhibiting numerous symptoms commonly associated with excessive frame flex, structural deformation, and potential frame failure. The symptoms observed include concerns affecting multiple structural systems of the RV, including the front pin box area, walls, slide-outs, floor structure, suspension attachment points, towing stability, and general structural integrity. These symptoms are not isolated cosmetic issues but instead appear to represent a pattern of progressive structural distress. Critical Structural Symptoms Observed Front Structure / Pin Box Area Excessive pin box movement Upper deck movement Front cap movement Structural noises during hitching and towing Stress cracking around structural components Structural Separation Wall separation Trim separation Fastener failures Screws backing out Loss of structural attachment points Interior Structural Indicators Cabinet separation from walls and ceilings Joint separation Wall movement Progressive structural movement over time Slide-Out Structural Concerns Slide misalignment Alignment changes Structural movement around slide openings Frame and Weld Concerns Cracked welds Structural deformation indicators Evidence of ongoing frame movement Towing and Highway Safety Concerns Changes in towing characteristics Increased trailer instability Hitch movement Concerns regarding safe highway operation According to the attached frame failure symptom checklist, several of these conditions are considered high-probability indicators of structural frame distress. Request for NHTSA Review Request for NHTSA Review Given the number and variety of structural symptoms present, I respectfully request that NHTSA evaluate whether this vehicle exhibits conditions consistent with excessive frame flex or structural failure and whether this complaint should be reviewed in connection with PE24-029 or other ongoing investigations involving Grand Design RV

Source: NHTSA complaint ODI #11759937 · view all complaints for this vehicle at nhtsa.gov