{"nhtsa_id":10000173,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2003-02-14","date":"2002-10-01","document_id":"020421006A","mfr_campaign":null,"replaces":"020421006","component":"POWER TRAIN:TRANSFER CASE (4-WHEEL DRIVE)","mfr_system":null,"summary":"INOPERATIVE 4WD/AWD LAMPS, INOPERATIVE 4WD/AWD SYSTEM. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/10000173","components":[{"id":"powertrain","name":"Transmission and driveline","parent":null},{"id":"transfer-case","name":"Transfer case","parent":"powertrain"}],"codes":[],"topics":[],"vehicles":[{"make":"CHEVROLET","model":"AVALANCHE","year_from":2003,"year_to":2003,"match":"exact","vehicle_ids":["2003_chevrolet_avalanche"]},{"make":"CHEVROLET","model":"SILVERADO","year_from":2003,"year_to":2003,"match":"exact","vehicle_ids":["2003_chevrolet_silverado"]},{"make":"CHEVROLET","model":"SUBURBAN","year_from":2003,"year_to":2003,"match":"exact","vehicle_ids":["2003_chevrolet_suburban"]},{"make":"CHEVROLET","model":"TAHOE","year_from":2003,"year_to":2003,"match":"exact","vehicle_ids":["2003_chevrolet_tahoe"]},{"make":"CHEVROLET","model":"TRAILBLAZER","year_from":2002,"year_to":2003,"match":"exact","vehicle_ids":["2002_chevrolet_trailblazer","2003_chevrolet_trailblazer"]},{"make":"GMC","model":"ENVOY","year_from":2002,"year_to":2003,"match":"exact","vehicle_ids":["2002_gmc_envoy","2003_gmc_envoy"]},{"make":"GMC","model":"SIERRA","year_from":2003,"year_to":2003,"match":"exact","vehicle_ids":["2003_gmc_sierra"]},{"make":"GMC","model":"YUKON","year_from":2003,"year_to":2003,"match":"exact","vehicle_ids":["2003_gmc_yukon"]},{"make":"OLDSMOBILE","model":"BRAVADA","year_from":2002,"year_to":2003,"match":"exact","vehicle_ids":["2002_oldsmobile_bravada","2003_oldsmobile_bravada"]}],"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":[]}