{"nhtsa_id":10023732,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2008-01-29","date":"2008-06-01","document_id":"4540","mfr_campaign":null,"replaces":"PIT4540A","component":"SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:MASTER CYLINDER; SERVICE BRAKES, AIR","mfr_system":null,"summary":"VEHICLE SHAKES OR VIBRATES AT HIGHWAY SPEEDS. *NJ UPDATED 8/25/08. *PE","document":null,"url":"https://open.wenmarpro.com/bulletins/10023732","components":[{"id":"brakes","name":"Brakes","parent":null},{"id":"brake-master-cylinder","name":"Brake master cylinder","parent":"brakes"}],"codes":[],"topics":[],"vehicles":[{"make":"BUICK","model":"RAINIER","year_from":2007,"year_to":2007,"match":"exact","vehicle_ids":["2007_buick_rainier"]},{"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":"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":[]}