{"nhtsa_id":10030766,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2009-11-30","date":"2011-04-01","document_id":"SB-09-03-09-001","mfr_campaign":null,"replaces":"SB-09-03-09-001A","component":"SUSPENSION:REAR:SPRINGS:LEAF SPRING ASSEMBLY; SUSPENSION:REAR:SPRINGS:LEAF SPRING ASSEMBLY:LEAF","mfr_system":null,"summary":"CHEVROLET/GMC: A CLUNKING NOISE COMING FROM THE REAR OF THE VEHICLE. UPON FURTHER INVESTIGATION, THE TECHNICIAN MAY DIAGNOSE THE NOISE COMING FROM THE REAR SUSPENSION LEAF SPRING AREA. *PE UPDATED 6/30/2011. *KB","document":null,"url":"https://open.wenmarpro.com/bulletins/10030766","components":[{"id":"suspension","name":"Suspension","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"CHEVROLET","model":"SILVERADO","year_from":2007,"year_to":2012,"match":"exact","vehicle_ids":["2007_chevrolet_silverado","2008_chevrolet_silverado","2009_chevrolet_silverado","2010_chevrolet_silverado","2011_chevrolet_silverado","2012_chevrolet_silverado"]},{"make":"GMC","model":"SIERRA","year_from":2007,"year_to":2012,"match":"exact","vehicle_ids":["2007_gmc_sierra","2008_gmc_sierra","2009_gmc_sierra","2010_gmc_sierra","2011_gmc_sierra","2012_gmc_sierra"]}],"as_of":"2026-10-19","note":"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.","attribution":[]}