Recall campaignNHTSA 74V027000 Service brakes, hydraulic: power assist: vacuum ComponentService brakes, hydraulic: power assist: vacuumManufacturerGENERAL MOTORS CORP.Vehicles affected1,218,387Reported to NHTSA1974-02-15Owners notified1974-02-18 Manufacturer remedyNo remedy is listed yet. This typically indicates the manufacturer reported the defect before finalizing a repair procedure.