{"nhtsa_id":10025670,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2008-08-28","date":"2008-05-01","document_id":"08-07-30-023","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN:AUTOMATIC TRANSMISSION","mfr_system":null,"summary":"4L60-E/4L65-E/4L70-E AUTOMATIC TRANSMISSION FLUID LEAK FROM OIL PUMP OR BELL HOUSING AREA (REPLACE TORQUE CONVERTER HUB-TO-OIL PUMP SEAL ASSEMBLY). ATTN: THIS BULLETIN APPLIES TO VEHICLES BUILT PRIOR TO DECEMBER 2007. *PE","document":null,"url":"https://open.wenmarpro.com/bulletins/10025670","components":[{"id":"powertrain","name":"Transmission and driveline","parent":null},{"id":"automatic-transmission","name":"Automatic transmission","parent":"powertrain"}],"codes":[],"topics":[],"vehicles":[{"make":"CHEVROLET","model":"AVALANCHE","year_from":2007,"year_to":2008,"match":"exact","vehicle_ids":["2007_chevrolet_avalanche","2008_chevrolet_avalanche"]},{"make":"CHEVROLET","model":"EXPRESS","year_from":2007,"year_to":2008,"match":"exact","vehicle_ids":["2007_chevrolet_express","2008_chevrolet_express"]},{"make":"CHEVROLET","model":"SILVERADO","year_from":2007,"year_to":2008,"match":"exact","vehicle_ids":["2007_chevrolet_silverado","2008_chevrolet_silverado"]},{"make":"CHEVROLET","model":"SUBURBAN","year_from":2007,"year_to":2008,"match":"exact","vehicle_ids":["2007_chevrolet_suburban","2008_chevrolet_suburban"]},{"make":"CHEVROLET","model":"TAHOE","year_from":2007,"year_to":2008,"match":"exact","vehicle_ids":["2007_chevrolet_tahoe","2008_chevrolet_tahoe"]},{"make":"CHEVROLET","model":"TRAILBLAZER","year_from":2008,"year_to":2008,"match":"exact","vehicle_ids":["2008_chevrolet_trailblazer"]},{"make":"CHEVROLET","model":"TRAILBLAZER 360","year_from":2007,"year_to":2007,"match":"base","vehicle_ids":["2007_chevrolet_trailblazer"]},{"make":"GMC","model":"ENVOY","year_from":2008,"year_to":2008,"match":"exact","vehicle_ids":["2008_gmc_envoy"]},{"make":"GMC","model":"ENVOY 360","year_from":2007,"year_to":2007,"match":"base","vehicle_ids":["2007_gmc_envoy"]},{"make":"GMC","model":"SAVANA","year_from":2007,"year_to":2008,"match":"exact","vehicle_ids":["2007_gmc_savana","2008_gmc_savana"]},{"make":"GMC","model":"SIERRA","year_from":2007,"year_to":2008,"match":"exact","vehicle_ids":["2007_gmc_sierra","2008_gmc_sierra"]},{"make":"GMC","model":"YUKON","year_from":2007,"year_to":2008,"match":"exact","vehicle_ids":["2007_gmc_yukon","2008_gmc_yukon"]},{"make":"GMC","model":"YUKON XL","year_from":2007,"year_to":2008,"match":"exact","vehicle_ids":["2007_gmc_yukon-xl","2008_gmc_yukon-xl"]},{"make":"HUMMER","model":"H2","year_from":2007,"year_to":2008,"match":"exact","vehicle_ids":["2007_hummer_h2","2008_hummer_h2"]},{"make":"SAAB","model":"9-7X","year_from":2007,"year_to":2008,"match":"exact","vehicle_ids":["2007_saab_9-7x","2008_saab_9-7x"]}],"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":[]}