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Service bulletin TSB-012

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 id10076208
Published by NHTSA2016-07-07
Manufacturer's numberTSB-012
Manufacturer's date2015-03-31
NHTSA componentFUEL SYSTEM, DIESEL:STORAGE:TANK ASSEMBLY

NHTSA's summary

FRAME MOUNT CYLINDER ISOLATOR REPLACEMENT. CYLINDER ISOLATORS ARE USED WITHIN A FUEL STORAGE MODULE (FSM) TO SECURE THE CYLINDER TO THE VEHICLE. THE ISOLATORS SECURE THE CYLINDER TO THE BRACKETS. AS PART OF A PERIODIC MAINTENANCE SCHEDULE, THE CYLINDER ISOLATORS NEED TO BE INSPECTED. DURING THIS PROCESS, THE ISOLATORS ON BOTH THE CYLINDER BRACKET AND CYLINDER STRAP ARE CHECKED FOR SLIPPAGE AND WEAR. IN SOME CASES, THE ISOLATORS MAY SLIP AWAY FROM THE CYLINDER BRACKET SADDLES AND/OR STRAPS. THIS SITUATION PLACES THE STEEL CYLINDER BRACKETS AND/OR STRAPS DIRECTLY IN CONTACT WITH THE SURFACE OF THE TYPE 4 CYLINDER WHICH COULD DAMAGE THE CYLINDER AND CREATE A DANGEROUS CONDITION.

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

Fuel system, Fuel tank

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.