{"nhtsa_id":10020489,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2006-10-27","date":"2006-09-27","document_id":"3927","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN:AUTOMATIC TRANSMISSION","mfr_system":null,"summary":"ENGINE WITH A REPEAT CRACKED FLYWHEEL. *KB","document":null,"url":"https://open.wenmarpro.com/bulletins/10020489","components":[{"id":"powertrain","name":"Transmission and driveline","parent":null},{"id":"automatic-transmission","name":"Automatic transmission","parent":"powertrain"}],"codes":[],"topics":[],"vehicles":[{"make":"CHEVROLET","model":"EXPRESS","year_from":2004,"year_to":2006,"match":"exact","vehicle_ids":["2004_chevrolet_express","2005_chevrolet_express","2006_chevrolet_express"]},{"make":"CHEVROLET","model":"SILVERADO","year_from":2004,"year_to":2006,"match":"exact","vehicle_ids":["2004_chevrolet_silverado","2005_chevrolet_silverado","2006_chevrolet_silverado"]},{"make":"GMC","model":"SIERRA","year_from":2004,"year_to":2006,"match":"exact","vehicle_ids":["2004_gmc_sierra","2005_gmc_sierra","2006_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":[]}