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Service bulletin SB-32-48

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 id10039606
Published by NHTSA2011-08-05
Manufacturer's numberSB-32-48
Manufacturer's date2011-05-01
NHTSA componentSUSPENSION:FRONT:SPRINGS:AIR SUSPENSION SYSTEM

NHTSA's summary

FREIGHTLINER: THE REAR SUSPENSION AIR SPRING HAS BEEN REDESIGNED. *RM

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
FREIGHTLINER ARGOSY2010, 2011
FREIGHTLINER BUSINESS CLASS M22010 to 2011
FREIGHTLINER BUSINESS CLASS M2 106V2011
FREIGHTLINER CASCADIA2010, 2011, 2012
FREIGHTLINER COLUMBIA2010, 2011, 2012
FREIGHTLINER CORONADO2010, 2011, 2012
FREIGHTLINER FLD2010

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

Other bulletins for the same vehicles and component
sb32502018-06-18. Service bulletin. sb3250 Incorrect ECAS Ride Height Sensor and Linkage InstallationB
4952014-05-07. Service bulletin. ELECTRONICALLY CONTROLLED AIR SUSPENSION IS BEING REPLACED. *LJ UPDATED 6/26/14. *PE UPDATED 7/3/14. *PE
SB-32-402011-05-06. Service bulletin. DAIMLER TRUCKS: TROUBLESHOOTING FOR A MISALIGNMENT OF THE SUSPENSION AIR SPRINGS. *RM
SB-60-1422009-10-08. Service bulletin. FREIGHTLINER: NEW MEDIUM BIAS AIR SPRINGS (18-52651-000) SUPERSEDED LOW BIAS AIR SPRINGS (18-40977-000) IN PRODUCTION ON 12/15/ 08/ OF REPLACING ONE AIR SPRING, DO NOT MATCH A LOW BIAS SIR SPRING WITH A MEDIUM BIAS ONE. THE TWO TYPES OF AIR SPRINGS HAVE DIFFERENT SPRING RATES, AND WILL HAVE A SLIGHTLY DIFFERENT RIDE HEIGHT AT THE SAME AIR PRESSURE. IF A MATCHING LOW BIAS AIR SPRING IS NOT AVAILABLE, REPLACE BOTH WITH MEDIUM BIAS AIR SPRINGS. NO MODEL YEARS LISTED. *PE