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Service bulletin TSB-018

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 id10195306
Published by NHTSA2021-06-07
Manufacturer's numberTSB-018
Manufacturer's date2015-10-26
NHTSA componentEQUIPMENT; ELECTRICAL SYSTEM:ALTERNATOR/GENERATOR/REGULATOR; FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY:PRESSURE RELIEF DEVICES

NHTSA's summary

ITT regulator Erratic Pressure Regulation

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

Electrical system, Equipment and accessories, Fuel system, Alternator, Fuel tank

Vehicles listed
QUANTUM FUEL SYSTEMS LLC. CNG FUEL SYSTEM
QUANTUM FUEL SYSTEMS LLC. CNG FUEL TANK

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