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Service bulletin SC-11304

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 id10043505
Published by NHTSA2012-04-06
Manufacturer's numberSC-11304
Manufacturer's date2012-01-01
NHTSA componentENGINE AND ENGINE COOLING:ENGINE; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL

NHTSA's summary

CHEVROLET/GMC: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. ILLUMINATION OF CHECK ENGINE SOON LIGHT MAY BE CAUSED BY EVAPORATIVE EMISSION CANISTER PURGE SOLENOID VALVE NOT FUNCTIONING PROPERLY. *PE

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

Engine, Exhaust and emissions

Vehicles listed
CHEVROLET SILVERADO2009
GMC SIERRA2009

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
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PIP4828B2024-04-15. Service bulletin. Power On Acceleration After Cold Start.
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