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Service bulletin SB-11159

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 id10038769
Published by NHTSA2011-06-27
Manufacturer's numberSB-11159
Manufacturer's date2011-05-01
NHTSA componentUNKNOWN OR OTHER

NHTSA's summary

GM: 2011 SIERRA/SILVERADO.TWO WELDS MAY BE MISSING FROM THE BOTTOM OF THE TRUCK BOX AND UNDER LOADS THE REMAINING WELDS MAY FRACTURE. *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.

Vehicles listed
CHEVROLET SILVERADO2011
GMC SIERRA2011

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