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Service bulletin LI4774E

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 id10171329
Published by NHTSA2020-02-10
Manufacturer's numberLI4774E
Manufacturer's date2020-01-14
NHTSA componentFUEL SYSTEM, GASOLINE

NHTSA's summary

Bad torque sequence and engine rail flatness out of tolerance at fuel tank mounts created preload in the chassis leading to premature failure.

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

Fuel system

Vehicles listed
NOVA BUS LFS2013 to 2014
NOVA BUS LFS2015, 2016
NOVA BUS LFS2018

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

Recalls for the same vehicles and component
20212862021-05-14. Fuel System
21V3510002021-05-14. FUEL SYSTEM, DIESEL:FUEL INJECTION SYSTEM:FUEL RAIL

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
BS5467E2023-10-17. Service bulletin. Potential presence of a gap may cause frame crack. Only to perform during a frame crack repair process near front bolt of joint #2.
FT46512023-08-17. Service bulletin. Failure of DEF sensor GEN 6 within the expected 5-years lifespan.
LI5228ER12022-06-30. Service bulletin. DEF tank Head Unit GEN4
PC10232021-04-02. Service bulletin. DEF level sensor failure
PC10222021-04-02. Service bulletin. DEF level sensor failure
FT47972020-03-09. Service bulletin. Coolant leak off surge tank fitting
FT4737R22020-01-21. Service bulletin. Spheros Pre-Heater / Pre-Heater Regulator Replacement
FT46162019-07-08. Service bulletin. Fuel tank support bracket failure
FT45982019-06-10. Service bulletin. Ramp pump assembly with aluminum reservoir cracking
LI4289ER12018-04-23. Service bulletin. Oil filler tube part number superceeded by improved tube