The contact owns a 2021 Grand Design Recreational Momentum. The contact stated that while having maintenance work completed on the RV, the dealer removed the nose cap and noticed that the insulation and the mylar tarp near the rear of the RV was burned. The contact was informed that the wiring on the nose cap had been overheating and causing the burn. The dealer had reconnected the wiring but had not repaired the RV. The manufacturer was made aware of the failure. The failure mileage was 40,000.

Source: NHTSA complaint ODI #11608146 · view all complaints for this vehicle at nhtsa.gov

Bolts holding brake caliper assembly to the axle apparently loosen and fell out while on the highway. This caused the caliper to drop, resting on inner part of the tire rim, leaving approximately half to one quarter of the caliper on the disc. Caliper caused significant gouging on the rim. During braking, the caliper was prevented from spinning during brake application due to it hitting the axle u-bolt retention plate on top of the leaf spring. In the very limited backing, the hydraulic line held back the caliper. Safety issues are the complete lose of the hydraulic system, causing the complete lose of trailer brakes. The caliper gouging the tire rim could have caused the rim to break, with the result of the tire departing the trailer on the highway and hitting another vehicle. Issue was found when I noticed metal flakes (tire rim) in my driveway where I backed my trailer to park it. Following the flakes, I discovered the issue. Grand Design, and axle/brake manufacturer Dexter notified via email. No response as of yet. Hydraulic brakes were factory installed at the time of manufacture.

Source: NHTSA complaint ODI #11477900 · view all complaints for this vehicle at nhtsa.gov

The contact owns a 2021 Grand Design Momentum. The contact stated that while the trailer was parked, the contact became aware that the axle on the trailer had become inoperable. The contact stated that the axle springs had detached, and the I-beam frame of the trailer was bent. The trailer was taken to an independent mechanic, where it was diagnosed and determined that the axle springs and the frame had failed and needed to be replaced. The trailer was not repaired. The dealer was contacted; however, the trailer was not diagnosed or repaired. The manufacturer was made aware of the failure. The approximate failure mileage was 8,000.

Source: NHTSA complaint ODI #11681297 · view all complaints for this vehicle at nhtsa.gov

We own a 2021 Grand Design Momentum 393g toy hauler that has severe frame flex and bolts in slide have started backing out. We noticed this when driving and the extreme pushing/chucking when accelerating or braking and also the visible failure on the unit. We have contacted Gran Design, the manufacturer, for warranty repair and was able to go see the unit when they torn down to look at frame. The side walls were both broken and wall frame fell out when opened up. The unit is now at the manufacturer in Indiana for repair, my husband did not feel it was safe to tow so we requested manufacturer transport the unit. We were told by a Lippert Frame Tech the unit is not safe to use.

Source: NHTSA complaint ODI #11750219 · view all complaints for this vehicle at nhtsa.gov