The deal got the approval of the Federal Reserve last week, clearing the way for Cincinnati-based Fifth Third to close the deal with Dallas-based Comerica. Fifth Third Bank and Comerica are two of Michigan’s largest banks by deposits, at No. In 1936, it changed its name to The Detroit Bank. In 1982, it became Comerica Bank-Detroit and then simply Comerica Bank in 1991. Affected West Michigan locations include five Comerica offices in Grand Rapids that will consolidate into nearby Fifth Third branches.