{"nhtsa_id":10004370,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2003-12-04","date":"2003-08-01","document_id":"030601023","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING:ENGINE","mfr_system":null,"summary":"HIGHER THAN EXPECTED OIL CONSUMPTION <8500 GVW. VARIOUS MODELS INCLUDING 2003-2004 CHEVROLET KODIAK (C4500-C5500 SERIES MODELS)AND GMC TOPKICK (C4500-C5500 SERIES MODELS). *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/10004370","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"CHEVROLET","model":"AVALANCHE","year_from":2002,"year_to":2004,"match":"exact","vehicle_ids":["2002_chevrolet_avalanche","2003_chevrolet_avalanche","2004_chevrolet_avalanche"]},{"make":"CHEVROLET","model":"EXPRESS","year_from":2000,"year_to":2004,"match":"exact","vehicle_ids":["2000_chevrolet_express","2001_chevrolet_express","2002_chevrolet_express","2003_chevrolet_express","2004_chevrolet_express"]},{"make":"CHEVROLET","model":"KODIAK","year_from":2003,"year_to":2003,"match":null,"vehicle_ids":[]},{"make":"CHEVROLET","model":"SILVERADO","year_from":2000,"year_to":2004,"match":"exact","vehicle_ids":["2000_chevrolet_silverado","2001_chevrolet_silverado","2002_chevrolet_silverado","2003_chevrolet_silverado","2004_chevrolet_silverado"]},{"make":"CHEVROLET","model":"SUBURBAN","year_from":2000,"year_to":2004,"match":"exact","vehicle_ids":["2000_chevrolet_suburban","2001_chevrolet_suburban","2002_chevrolet_suburban","2003_chevrolet_suburban","2004_chevrolet_suburban"]},{"make":"GMC","model":"SAVANA","year_from":2000,"year_to":2004,"match":"exact","vehicle_ids":["2000_gmc_savana","2001_gmc_savana","2002_gmc_savana","2003_gmc_savana","2004_gmc_savana"]},{"make":"GMC","model":"SIERRA","year_from":2000,"year_to":2004,"match":"exact","vehicle_ids":["2000_gmc_sierra","2001_gmc_sierra","2002_gmc_sierra","2003_gmc_sierra","2004_gmc_sierra"]},{"make":"GMC","model":"TOPKICK","year_from":2003,"year_to":2003,"match":null,"vehicle_ids":[]},{"make":"GMC","model":"YUKON XL","year_from":2000,"year_to":2004,"match":"exact","vehicle_ids":["2000_gmc_yukon-xl","2001_gmc_yukon-xl","2002_gmc_yukon-xl","2003_gmc_yukon-xl","2004_gmc_yukon-xl"]},{"make":"HUMMER","model":"H2","year_from":2003,"year_to":2004,"match":"exact","vehicle_ids":["2003_hummer_h2","2004_hummer_h2"]}],"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":[]}