Tl* the contact owns a 2003 chevrolet express. the contact stated that the front of the vehicle vibrated whenever the vehicle was being driven over 30 mph over a bump. the vehicle was taken to a dealer where the control arms, the pitman arm, the tires and the hubs were replaced, but the failure persisted. the failure mileage was 109,000. the vin was not available. ....updated 07/22/15 *bf updated 10/4/2017*cn