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                                                                    EXHIBIT 99.3








         CONSENT OF DONALDSON, LUFKIN & JENRETTE SECURITIES CORPORATION








              We hereby consent to (i) the inclusion of our opinion letter to
the Board of Directors of Imperial Bancorp (the "Company") attached as Appendix
C to the Proxy Statement/Prospectus of the Company relating to the Company's
merger with Comerica Incorporated and (ii) all references to DLJ in the sections
captioned "Summary--Opinion of Imperial's Financial Advisor," "The
Merger--Background to the Merger," "The Merger--Reasons for the Merger and
Recommendation of the Imperial Board of Directors" and "The Merger--Opinion of
Imperial's Financial Advisor" of the Company's Proxy Statement/Prospectus which
forms a part of this Registration Statement on Form S-4 filed by Comerica
Incorporated. In giving such consent, we do not admit that we come within the
category of persons whose consent is required under, and we do not admit that we
are "experts" for purposes of, the Securities Act of 1933, as amended, and the
rules and regulations promulgated thereunder.


                                           DONALDSON, LUFKIN & JENRETTE
                                             SECURITIES CORPORATION



                                           By: /s/ Tod D. Perkins
                                               --------------------------------
                                               Tod D. Perkins
                                               Managing Director

New York, New York
December 13, 2000