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Service bulletin TSB-050

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10233482
Published by NHTSA2023-04-03
Manufacturer's numberTSB-050
Manufacturer's date2024-06-24
Campaign id or software versionTSB-050
NHTSA componentSUSPENSION; UNKNOWN OR OTHER

NHTSA's summary

An additional cross member or front sill is welded behind the header panel in PRATT chassis, this front sill is designed to support the front of the VP container. The front sill is supposed to be flush with the top of the frame rails. In some cases this front sill has been found to be too low which can result in damage and wear of the VP container.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Suspension

Vehicles listed
QUANTUM FUEL SYSTEMS LLC. VP LITE2017 to 2022

Listing a model year does not mean every vehicle of it is concerned: the document says which.