Mich. Comp. Laws § 12.41
All powers and duties now vested by law in the auditor general with respect to the drawing and issuing of warrants are hereby transferred to and vested in the state treasurer. The state treasurer shall be vested with full authority to draw, issue or cause to issue warrants with reference to all matters as have heretofore been vested in the auditor general. The state treasurer is hereby vested with all the powers, duties, functions, responsibilities and jurisdiction now or hereafter conferred on the auditor general with respect to actions in garnishment. Whenever any reference is made in the laws of this state to the auditor general with respect to warrants, and with respect to actions in garnishment, such reference shall be deemed intended to be made to the state treasurer. The powers and duties of the auditor general with respect to drawing and issuing of warrants and with respect to actions in garnishment shall be terminated upon the effective date of this act.
MCL 12.41