{"nhtsa_id":634837,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2002-10-09","date":"2002-06-01","document_id":"020522002","mfr_campaign":null,"replaces":null,"component":"SERVICE BRAKES, HYDRAULIC:POWER ASSIST:VACUUM","mfr_system":null,"summary":"THIS BULLETIN IS BEING ISSUED TO REVISE THE VACUUM BRAKE BOOSTER REPLACEMENT PROCEDURE. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/634837","components":[{"id":"brakes","name":"Brakes","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"CHEVROLET","model":"VENTURE","year_from":2001,"year_to":2002,"match":"exact","vehicle_ids":["2001_chevrolet_venture","2002_chevrolet_venture"]},{"make":"OLDSMOBILE","model":"SILHOUETTE","year_from":2001,"year_to":2002,"match":"exact","vehicle_ids":["2001_oldsmobile_silhouette","2002_oldsmobile_silhouette"]},{"make":"PONTIAC","model":"MONTANA","year_from":2001,"year_to":2002,"match":"exact","vehicle_ids":["2001_pontiac_montana","2002_pontiac_montana"]}],"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":[]}