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Service bulletin SI-004

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 id10076222
Published by NHTSA2016-07-07
Manufacturer's numberSI-004
Manufacturer's date2015-06-05
NHTSA componentFUEL SYSTEM, GASOLINE:STORAGE; EQUIPMENT

NHTSA's summary

QUANTUM FUEL STORAGE MODUELS (FSMS) ARE DESIGNED TO PROVIDE ASAFE AND DURABLE FUEL STORAGE SOLUTION FOR CLASS 7 AND CLASS 8 COMMERCIAL TRUCKS. IN SOME CASES, THE CYLINDER(S) MAY ROTATE AND/OR MOVE LATERALLY WITH THE FUEL STORAGE MODULE CYLINDER SUPPORT BRACKETS. VEHICLES THAT OPERATE UNDER CONSISTENT HIGH LOAD CONDITIONS (MAXIMUM GVW) AND OR EXPERIENCE HIGH LEVELS OF DYNAMIC CHASSIS TWIST, MAY INDUCE LOADS THAT MAY RESULT IN MOVEMENT OF THE CYLINDER(S) WITHIN THE FUEL STORAGE MODULE SUPPORT BRACKETS.

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Equipment and accessories, Fuel system

Vehicles listed
QUANTUM FUEL SYSTEMS LLC. CNG FUEL TANK

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