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Service bulletin 050301

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 id10013235
Published by NHTSA2005-04-13
Manufacturer's number050301
Manufacturer's date2005-04-01
NHTSA componentSUSPENSION:FRONT:SPRINGS:AIR SUSPENSION SYSTEM

NHTSA's summary

RIDE HEIGHT CONTROL VALVE USED WITH INTERNATIONAL RIDE OPTIMIZED SUSPENSION (IROS) AND HENDRICKSON AIR SUSPENSION (HAS), WITHOUT CODE 14899, MAY NOT RE-INFLATE THE AIR SPRINGS DUE TO BLOCKAGE IN THE DUMP PORT. INTERNATIONAL. *TT

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

Suspension, Air suspension

Vehicles listed
UNKNOWN UNKNOWN

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