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Service bulletin FSB-437-001

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 id10043087
Published by NHTSA2012-02-21
Manufacturer's numberFSB-437-001
Manufacturer's date2011-09-01
NHTSA componentPOWER TRAIN:AUTOMATIC TRANSMISSION:TORQUE CONVERTER

NHTSA's summary

VOLVO TRUCK: THE ALLISON TRANSMISSION WOULD BE EASIER TO INSTALL AFTER APPLYING HIGH TEMPERATURE MOLYBDENUM DISULFIDE GREASE ON NOSE OF TORQUE CONVERTER PILOT AND PREVENT BINDING DURING THERMAL EXPANSION CYCLE OF NORMAL OPERATION. MODELS VN, VHD VAH. NO MODEL YEARS LISTED. *PE

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

Transmission and driveline, Automatic transmission, Torque converter

Vehicles listed
VOLVO VHD2011
VOLVO VN2011

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