{"nhtsa_id":10020887,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2007-01-26","date":null,"document_id":"4181","mfr_campaign":null,"replaces":"4181B","component":"EXTERIOR LIGHTING:TURN SIGNAL","mfr_system":null,"summary":"TURN SIGNAL FLASHES FAST. *KB","document":null,"url":"https://open.wenmarpro.com/bulletins/10020887","components":[{"id":"lighting","name":"Lighting","parent":null},{"id":"turn-signal","name":"Turn signals","parent":"lighting"}],"codes":[],"topics":[],"vehicles":[{"make":"CHEVROLET","model":"SILVERADO 1500","year_from":2007,"year_to":2007,"match":"base","vehicle_ids":["2007_chevrolet_silverado"]},{"make":"CHEVROLET","model":"SILVERADO 2500","year_from":2007,"year_to":2007,"match":"base","vehicle_ids":["2007_chevrolet_silverado"]},{"make":"CHEVROLET","model":"SILVERADO 3500","year_from":2007,"year_to":2007,"match":"base","vehicle_ids":["2007_chevrolet_silverado"]},{"make":"GMC","model":"SIERRA 1500","year_from":2007,"year_to":2007,"match":"base","vehicle_ids":["2007_gmc_sierra"]},{"make":"GMC","model":"SIERRA 2500","year_from":2007,"year_to":2007,"match":"base","vehicle_ids":["2007_gmc_sierra"]},{"make":"GMC","model":"SIERRA 3500","year_from":2007,"year_to":2007,"match":"base","vehicle_ids":["2007_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":[]}