{"nhtsa_id":10007624,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2004-07-06","date":"2004-01-01","document_id":"01267F","mfr_campaign":null,"replaces":"01267I","component":"ELECTRICAL SYSTEM","mfr_system":null,"summary":"SERVICE 4WD LIGHT ON NO CODES BESIDES U1000 CODES OR C0550. *MJ","document":null,"url":"https://open.wenmarpro.com/bulletins/10007624","components":[{"id":"electrical","name":"Electrical system","parent":null}],"codes":["C0550","U1000"],"topics":[],"vehicles":[{"make":"CHEVROLET","model":"AVALANCHE","year_from":2003,"year_to":2004,"match":"exact","vehicle_ids":["2003_chevrolet_avalanche","2004_chevrolet_avalanche"]},{"make":"CHEVROLET","model":"SILVERADO","year_from":2003,"year_to":2004,"match":"exact","vehicle_ids":["2003_chevrolet_silverado","2004_chevrolet_silverado"]},{"make":"CHEVROLET","model":"SUBURBAN","year_from":2003,"year_to":2004,"match":"exact","vehicle_ids":["2003_chevrolet_suburban","2004_chevrolet_suburban"]},{"make":"CHEVROLET","model":"TAHOE","year_from":2003,"year_to":2004,"match":"exact","vehicle_ids":["2003_chevrolet_tahoe","2004_chevrolet_tahoe"]},{"make":"GMC","model":"SIERRA","year_from":2003,"year_to":2004,"match":"exact","vehicle_ids":["2003_gmc_sierra","2004_gmc_sierra"]},{"make":"GMC","model":"YUKON","year_from":2003,"year_to":2004,"match":"exact","vehicle_ids":["2003_gmc_yukon","2004_gmc_yukon"]}],"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":[]}