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Service bulletin 1996584

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 id10022660
Published by NHTSA2007-09-18
Manufacturer's number1996584
NHTSA componentSUSPENSION:REAR:SPRINGS:AIR SUSPENSION SYSTEM

NHTSA's summary

BOOM/RUMBLING NOISE AT HIGHWAY SPEED *NJ

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
BUICK RAINIER2004, 2005, 2006, 2007
CHEVROLET TRAILBLAZER2002, 2003, 2004, 2005, 2006
CHEVROLET TRAILBLAZER2008
CHEVROLET TRAILBLAZER 3602007 (the catalog's model; the bulletin names a series or trim of it)
GMC ENVOY2002, 2003, 2004, 2005, 2006
GMC ENVOY2008
GMC ENVOY 3602007 (the catalog's model; the bulletin names a series or trim of it)
OLDSMOBILE BRAVADA2003, 2004
SAAB 9-7X2005, 2006, 2007, 2008

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
040482005-04-07. Service bulletin. AN ELECTRONICALLY CONTROLLED AIR SUSPENSION MAY PRODUCE A BRIEF ELECTRICAL SPIKE WHILE THE VEHICLE IS OPERATING. *TT