(1) The department shall investigate, gather, and organize all information necessary for a fair and timely decision in each dispute. The department may, on behalf of the arbitrator, issue subpoenas to compel the attendance of witnesses and the production of documents, papers, and records relevant to the dispute.
(2) If requested by the arbitrator, the department may forward a copy of all written testimony and documentary evidence to an independent technical expert certified by the national institute of automotive excellence. The expert may review the material and be available to advise and consult with the arbitrator. The expert, at the arbitrator's request, may be present whenever oral testimony is presented.