2014 Grand Design Momentum 355TH problems: recalls, complaints and what to check
NHTSA has 1 recall and 1 owner complaint on file for the 2014 Grand Design Momentum 355TH. Here is what they are, what a technician checks for each kind of fault, and how to look one over before you buy it.
Axles, brakes, suspension and hitch: 1 recall, 1 complaint
Recall 14V476000 (04/08/2014): SUSPENSION
Grand Design RV, LLC (Grand Design) is recalling certain model year 2014 Momentum 355th, 380th, and 385th fifth wheel trailers manufactured June 24, 2013, to March 21, 2014 and built with 8,000lb capacity axles. The affected trailers may have been built with suspension bolts that can shear. These bolts connect the axle springs to the frame, and after they shear, the axle spring may detach from the frame hanger or "shackle".
Fix: Grand Design will notify owners, and dealers will replace the suspension bolts with ones that have a shorter thread depth, free of charge. The recall began in August 2014. Owners may contact Grand Design customer service at 1-574-825-9679. Grand Design's number for this recall is 910002.
What a tech checks: Bearings, brake magnets, worn shackle bolts and bent axles. A trailer that wears tires on the inside edge or pulls to one side usually has an axle or suspension problem. Before you buy: Bolts tight, springs not flat, brakes apply with the breakaway pin pulled.
Chassis and towing lessons · Trailer guide
What owners reported to NHTSA
06/09/2015, SERVICE BRAKES: AXLE SEALS ON 3 OUT OF 4 HUBS FAILED AND LEAKED GREASE ALL OVER THE BRAKES CAUSING 80 PERCENT BRAKE FAILURE. I HAD TO BUY ALL NEW SEALS AND BRAKE SHOES. THIS WAS WITH LESS THAN 3K MILES ON UNIT.
Looking at a 2014 Grand Design Momentum 355TH?
The Buyer's Check walks you through it on your phone: what to ask, the outside walk-around, water damage, every system on every power source, with the recalls above built in. You get a report that says what's a walk-away and what to negotiate on.
Checked against NHTSA 2026-10-23. Recall repairs are free at an authorized dealer. Complaints are owner reports to NHTSA and are not verified.