{"nhtsa_id":10009392,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2004-09-28","date":"2004-01-01","document_id":"3047","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN:AUTOMATIC TRANSMISSION","mfr_system":null,"summary":"HARSH TCC APPLY AND OR A DIAGNOSTIC TROUBLE CODE P1870. 4L80E AUTOMATIC TRANSMISSION. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/10009392","components":[{"id":"powertrain","name":"Transmission and driveline","parent":null},{"id":"automatic-transmission","name":"Automatic transmission","parent":"powertrain"}],"codes":["P1870"],"topics":[],"vehicles":[{"make":"CHEVROLET","model":"EXPRESS","year_from":2000,"year_to":2001,"match":"exact","vehicle_ids":["2000_chevrolet_express","2001_chevrolet_express"]},{"make":"CHEVROLET","model":"SILVERADO","year_from":2000,"year_to":2001,"match":"exact","vehicle_ids":["2000_chevrolet_silverado","2001_chevrolet_silverado"]},{"make":"CHEVROLET","model":"SUBURBAN","year_from":2000,"year_to":2001,"match":"exact","vehicle_ids":["2000_chevrolet_suburban","2001_chevrolet_suburban"]},{"make":"GMC","model":"SAVANA","year_from":2000,"year_to":2001,"match":"exact","vehicle_ids":["2000_gmc_savana","2001_gmc_savana"]},{"make":"GMC","model":"SIERRA","year_from":2000,"year_to":2001,"match":"exact","vehicle_ids":["2000_gmc_sierra","2001_gmc_sierra"]},{"make":"GMC","model":"YUKON","year_from":2000,"year_to":2001,"match":"exact","vehicle_ids":["2000_gmc_yukon","2001_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":[]}