{"nhtsa_id":10005166,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2004-02-11","date":"2003-12-01","document_id":"030421001D","mfr_campaign":null,"replaces":"030421001C","component":"POWER TRAIN:TRANSFER CASE (4-WHEEL DRIVE)","mfr_system":null,"summary":"4-WHEEL DRIVE SWITCH INDICATOR LIGHTS FLASHING, 4-WHEEL DRIVE INOPERATIVE, DIAGNOSTIC TROUBLE CODES C0327, P0836, P0500. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/10005166","components":[{"id":"powertrain","name":"Transmission and driveline","parent":null},{"id":"transfer-case","name":"Transfer case","parent":"powertrain"}],"codes":["C0327","P0500","P0836"],"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":"GMC","model":"YUKON","year_from":2003,"year_to":2003,"match":"exact","vehicle_ids":["2003_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":[]}