System: suspension; independent front; attaching mechanism; spring; coil.vehicle description: heavy duty trucks and truck tractors.note: if the vehicle IS presented to an authorized dealer on an agreed upon service date and the remedy IS not provided free of charge within a reasonable time or the remedy does not correct the defect, please contact western star at1-604-868-6222. Also, contact the national highway traffic safety administration's auto safety hotline at 1-800-424-9393.