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Service bulletin 09184C

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 id10089486
Published by NHTSA2017-01-25
Manufacturer's number09184C
Manufacturer's date2015-12-09
NHTSA componentEQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL

NHTSA's summary

"09184C - CUSTOMER SATISFACTION PROGRAM (REVISED SERVICE PROCEDURE). THIS BULLETIN HAS BEEN REVISED TO CLARIFY STEP 5 OF THE SERVICE PROCEDURE. CERTAIN 2007-2009 MODEL YEAR CHEVROLET SILVERADO AND GMC SIERRA VEHICLES CURRENTLY OR PREVIOUSLY REGISTERED IN ALASKA, CONNECTICUT, DELAWARE, DISTRICT OF COLUMBIA, ILLINOIS, INDIANA, IOWA, MAINE, MARYLAND, MASSACHUSETTS, MICHIGAN, MINNESOTA, MISSOURI, NEW HAMPSHIRE, NEW JERSEY, NEW YORK, OHIO, PENNSYLVANIA, RHODE ISLAND, VERMONT, WEST VIRGINIA, AND WISCONSIN MAY HAVE A CONDITION IN WHICH THE SENSING AND DIAGNOSTIC MODULE (SDM) MAY CORRODE DUE TO A SIGNIFICANT QUANTITY OF SNOW AND/OR WATER CONTAINING ROAD SALT OR OTHER CONTAMINANTS ENTERING THE VEHICLE AND SATURATING THE ACOUSTICAL PADDING BENEATH THE CARPET. THE SDM IS LOCATED UNDER THE DRIVER’S SEAT BENEATH THE ACOUSTICAL PADDING. IF SUFFICIENT MOISTURE COLLECTS AND IS RETAINED IN THE PADDING, IT MAY CAUSE EXCESSIVE CORROSION UNDER THE SDM THAT COULD COMPROMISE THE MODULE SEAL AND ALLOW WATER INTRUSION THAT COULD RESULT IN SDM MALFUNCTION. IF THIS CONDITION EXISTS, THE AIRBAG READINESS LIGHT OR A “SERVICE AIRBAG"" MESSAGE ON THE DRIVER INFORMATION CENTER (DIC) MAY ILLUMINATE. IN RARE CASES, THE VEHICLE MAY CONTACT ONSTAR® AND THE SEAT BELT PRETENSIONERS OR FRONT AIRBAGS MAY DEPLOY. DEALERS ARE TO REMOVE THE ACOUSTICAL PAD ABOVE THE SDM, INSPECT THE SDM, AND REPLACE THE SDM, IF NECESSARY."

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

Equipment and accessories, Labels and manuals

Vehicles listed
CHEVROLET SILVERADO 15002007, 2008, 2009 (the catalog's model; the bulletin names a series or trim of it)
GMC SIERRA 15002007, 2008, 2009 (the catalog's model; the bulletin names a series or trim of it)

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

Recalls for the same vehicles and component
18V2670002018-04-26. EQUIPMENT
20101892010-06-07. Accessories
09V4560002009-11-19. EQUIPMENT:APPLIANCE:AIR CONDITIONER
09V3250002009-08-03. EQUIPMENT ADAPTIVE/MOBILITY

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

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