Grand Design Momentum 2019–2020 — technical service bulletin
Bulletin TSB 19-004 · NHTSA communication 10162393 · issued Jul 9, 2019
Technical service bulletin
communication type
Electrical System
component
2019–2020
model years
2
vehicle entries
Official summary
On certain Momentum Travel Trailer models ( 25G, 28G & 29G) the EMS power shed for the bedroom AC and Water Heater is wired incorrectly. The hot wire is not routed through the current sensor. As a result, the system will not shed appliances as intended.
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.