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Service bulletin SD-03-4504

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 id10055633
Published by NHTSA2014-06-24
Manufacturer's numberSD-03-4504
Manufacturer's date2014-05-01
NHTSA componentSERVICE BRAKES

NHTSA's summary

BENDIX: INFORMATION CONCERNING THE MODULATING VALVE. THE R-7 MODULATING VALVE PERFORMS FOUR FUNCTIONS AND IS TO BE USED IN CONJUNCTION WITH THE DUAL AIR BRAKE SYSTEM AND SPRING BRAKE ACTUATORS. *JS

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

Brakes

Vehicles listed
BENDIX SERVICE BRAKES AIR

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