{"nhtsa_id":10020839,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2007-01-24","date":"2006-05-01","document_id":"030693001","mfr_campaign":null,"replaces":"030693001C","component":"ENGINE AND ENGINE COOLING:ENGINE","mfr_system":null,"summary":"DIAGNOSTIC INFORMATION ON TURBOCHARGER MALFUNCTION DUE TO LACK OF ENGINE OIL FOR LBZ, LB7, AND LLY DURAMAX DIESEL ENGINE. *KB","document":null,"url":"https://open.wenmarpro.com/bulletins/10020839","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"CHEVROLET","model":"EXPRESS","year_from":2006,"year_to":2006,"match":"exact","vehicle_ids":["2006_chevrolet_express"]},{"make":"CHEVROLET","model":"KODIAK","year_from":2003,"year_to":2006,"match":null,"vehicle_ids":[]},{"make":"CHEVROLET","model":"SILVERADO","year_from":2001,"year_to":2006,"match":"exact","vehicle_ids":["2001_chevrolet_silverado","2002_chevrolet_silverado","2003_chevrolet_silverado","2004_chevrolet_silverado","2005_chevrolet_silverado","2006_chevrolet_silverado"]},{"make":"GMC","model":"SAVANA","year_from":2006,"year_to":2006,"match":"exact","vehicle_ids":["2006_gmc_savana"]},{"make":"GMC","model":"SIERRA","year_from":2001,"year_to":2006,"match":"exact","vehicle_ids":["2001_gmc_sierra","2002_gmc_sierra","2003_gmc_sierra","2004_gmc_sierra","2005_gmc_sierra","2006_gmc_sierra"]},{"make":"GMC","model":"TOPKICK","year_from":2003,"year_to":2005,"match":null,"vehicle_ids":[]}],"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":[]}