Owner notification IS expected to begin during january 1998. Owners who take their vehicles to an authorized dealer on an agreed upon service date and do not receive the free remedy within a reasonable time should contact buick at 1-800-521-7300, oldsmobile at 1-800-442-6537, or chevrolet at 1-800-222-1020.also contact the national highway traffic safety administration's auto safety hotline at 1-800-424-9393.