EXHIBIT 23 CONSENT OF INDEPENDENT AUDITORS We consent to the incorporation by reference in Registration Statements No. 333-68595 and 333-60894 on Form S-8 of Commercial National Financial Corporation of our report dated April 25, 2003, included in this Annual Report on Form 11-K of Commercial Bank Employee Savings and Stock Ownership Plan for the year ended December 31, 2002. Crowe Chizek and Company LLC Grand Rapids, Michigan June 25, 2003