{"nhtsa_id":10079705,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2016-09-12","date":"2016-01-12","document_id":"GCUS-9-1493","mfr_campaign":null,"replaces":null,"component":"FUEL SYSTEM, OTHER","mfr_system":null,"summary":"14423B - SPECIAL COVERAGE (REVISED PART INFORMATION AND SERVICE PROCEDURE). A FUEL TANK INLET CHECK VALVE (ICV) COULD FRACTURE. THE ICV IS LOCATED ABOVE THE FULL FUEL LEVEL. A FRACTURED ICV COULD ALLOW FUEL VAPORS TO PASS THROUGH AND DROPLETS OF FUEL TO ACCUMULATE ON THE SIDE OF THE FUEL TANK AS IT PASSES OVER THE FRACTURE DURING REFUELING. IF THE ICV FRACTURES, THE VEHICLE’S SERVICE ENGINE SOON (SES) LIGHT MAY ILLUMINATE, AND THE OWNER MAY NOTICE A FUEL ODOR AND/OR A FEW DROPS OF FUEL ON THE GROUND WHEN REFUELING THE VEHICLE. IF THE CONDITION OCCURS WITHIN THE STATED TERMS, THE FUEL TANK WILL BE REPLACED.","document":null,"url":"https://open.wenmarpro.com/bulletins/10079705","components":[{"id":"fuel-system","name":"Fuel system","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"BUICK","model":"RAINIER","year_from":2004,"year_to":2004,"match":"exact","vehicle_ids":["2004_buick_rainier"]},{"make":"CHEVROLET","model":"TRAILBLAZER","year_from":2002,"year_to":2004,"match":"exact","vehicle_ids":["2002_chevrolet_trailblazer","2003_chevrolet_trailblazer","2004_chevrolet_trailblazer"]},{"make":"CHEVROLET","model":"TRAILBLAZER EXT","year_from":2002,"year_to":2004,"match":"base","vehicle_ids":["2002_chevrolet_trailblazer","2003_chevrolet_trailblazer","2004_chevrolet_trailblazer"]},{"make":"GMC","model":"ENVOY","year_from":2002,"year_to":2004,"match":"exact","vehicle_ids":["2002_gmc_envoy","2003_gmc_envoy","2004_gmc_envoy"]},{"make":"GMC","model":"ENVOY XL","year_from":2002,"year_to":2004,"match":"base","vehicle_ids":["2002_gmc_envoy","2003_gmc_envoy","2004_gmc_envoy"]},{"make":"GMC","model":"ENVOY XUV","year_from":2004,"year_to":2004,"match":"base","vehicle_ids":["2004_gmc_envoy"]},{"make":"OLDSMOBILE","model":"BRAVADA","year_from":2002,"year_to":2004,"match":"exact","vehicle_ids":["2002_oldsmobile_bravada","2003_oldsmobile_bravada","2004_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":[]}