{"source":"nhtsa","country":"us","campaign":"83V105000","date":"1983-10-13","owner_notified":"1983-10-20","manufacturer":"GENERAL MOTORS CORP.","component":"SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DIFFERENTIAL PROPORTIONAL VALVE","summary":"THE BRAKE PROPORTIONER VALVES MAY BREAK AND SEPARATE FROM THE MASTER CYLINDER. THIS WOULD ALLOW BRAKE FLUID TO LEAK AND WOULD RESULT IN A PARTIAL LOSS OF THE BRAKE SYSTEM.","consequence":null,"remedy":"THE DEALER WILL INSPECT AND, IF NECESSARY, REPLACE ALL SUSPECT VALVES.","notes":"VEHICLE DESCRIPTION: PASSENGER VEHICLES.SYSTEM: SERVICE BRAKES; BRAKE PROPORTIONER VALVES.CONSEQUENCES OF DEFECT: SINCE THIS IS A DUAL BRAKE SYSTEM, PART OF THE SYSTEMWILL STILL WORK AND ALLOW THE VEHICLE TO BE STOPPED, BUT OVER A GREATERDISTANCE. PARTIAL LOSS OF THE BRAKING SYSTEM AT A TIME WHEN MINIMUM STOPPINGDISTANCE IS REQUIRED COULD RESULT IN A VEHICLE ACCIDENT WITHOUT PRIOR WARNING.","mfr_campaign":null,"part_number":null,"units":352036,"completion":null,"do_not_drive":false,"park_outside":false,"notification":null,"french":null,"vehicles":[{"year":1983,"make":"BUICK","model":"CENTURY","vehicle_id":"1983_buick_century","match":"exact","built_from":"1982-10-01","built_to":"1983-05-01"},{"year":1983,"make":"BUICK","model":"SKYHAWK","vehicle_id":"1983_buick_skyhawk","match":"exact","built_from":"1982-10-01","built_to":"1983-05-01"},{"year":1983,"make":"BUICK","model":"SKYLARK","vehicle_id":"1983_buick_skylark","match":"exact","built_from":"1982-10-01","built_to":"1983-05-01"},{"year":1983,"make":"CADILLAC","model":"CIMARRON","vehicle_id":"1983_cadillac_cimarron","match":"exact","built_from":"1982-10-01","built_to":"1983-05-01"},{"year":1983,"make":"CHEVROLET","model":"CAVALIER","vehicle_id":"1983_chevrolet_cavalier","match":"exact","built_from":"1982-10-01","built_to":"1983-05-01"},{"year":1983,"make":"CHEVROLET","model":"CELEBRITY","vehicle_id":null,"match":null,"built_from":"1982-10-01","built_to":"1983-05-01"},{"year":1983,"make":"CHEVROLET","model":"CITATION","vehicle_id":"1983_chevrolet_citation","match":"exact","built_from":"1982-10-01","built_to":"1983-05-01"},{"year":1983,"make":"OLDSMOBILE","model":"CIERA","vehicle_id":null,"match":null,"built_from":"1982-10-01","built_to":"1983-05-01"},{"year":1983,"make":"OLDSMOBILE","model":"CUTLASS","vehicle_id":null,"match":null,"built_from":"1982-10-01","built_to":"1983-05-01"},{"year":1983,"make":"OLDSMOBILE","model":"FIRENZA","vehicle_id":"1983_oldsmobile_firenza","match":"exact","built_from":"1982-10-01","built_to":"1983-05-01"},{"year":1983,"make":"OLDSMOBILE","model":"OMEGA","vehicle_id":"1983_oldsmobile_omega","match":"exact","built_from":"1982-10-01","built_to":"1983-05-01"},{"year":1983,"make":"PONTIAC","model":"6000","vehicle_id":"1983_pontiac_6000","match":"exact","built_from":"1982-10-01","built_to":"1983-05-01"},{"year":1983,"make":"PONTIAC","model":"J2000","vehicle_id":"1983_pontiac_j2000","match":"exact","built_from":"1982-10-01","built_to":"1983-05-01"},{"year":1983,"make":"PONTIAC","model":"PHOENIX","vehicle_id":"1983_pontiac_phoenix","match":"exact","built_from":"1982-10-01","built_to":"1983-05-01"}],"may_apply":true,"as_of":"2026-10-19","lookup":{"nhtsa":"https://www.nhtsa.gov/recalls","tc":"https://wwwapps.tc.gc.ca/Saf-Sec-Sur/7/VRDB-BDRV/search-recherche/menu.aspx?lang=eng","maker":null},"attribution":[],"url":"https://open.wenmarpro.com/recalls/nhtsa/83V105000"}