SECURITIES AND EXCHANGE COMMISSION
                            Washington, D.C. 20549


                                 Schedule 13G/A



                   UNDER THE SECURITIES EXCHANGE ACT OF 1934
                             (Amendment No. 23)


                            TECUMSEH PRODS CO CL B
- --------------------------------------------------------------------------------
                                (Name of Issuer)

                                 COMMON STOCK
- --------------------------------------------------------------------------------
                         (Title of Class of Securities)

                                   878895101
- --------------------------------------------------------------------------------
                                 (CUSIP Number)


Check the following space if a fee is being paid with this statement: [_]

(A fee is not required only if the filing person: (1) has a previous statement
on file reporting beneficial ownership of more than five percent of the class of
securities described in Item 1; and (2) has filed no amendment subsequent
thereto reporting beneficial ownership of five percent or less of such class.)
(See Rule 13d-7.)

* The remainder of this cover page shall be filled out for a reporting person's
initial filing on this form with respect to the subject class of securities, and
for any subsequent amendment containing information which would alter the
disclosures provided in a prior cover page.

The information required in the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the Securities Exchange Act of
1934 ("Act") or otherwise subject to the liabilities of that section of the Act
but shall be subject to all other provisions of the Act (however, see the
Notes).




                                 SCHEDULE 13G
                 Under the Securities Exchange Act of 1934
===============================================================================

  CUSIP NO.  878895101
             ---------


- ------------------------------------------------------------------------------
1     NAME OF REPORTING PERSON, S.S OR I.R.S. IDENTIFICATION NO. OF ABOVE
      PERSON:


      Comerica Bank 38-0477375
- ------------------------------------------------------------------------------
2     CHECK THE APPROPRIATE LETTER IF A MEMBER OF A GROUP:

      (a)
      (b)
- ------------------------------------------------------------------------------
3     SEC USE ONLY



- ------------------------------------------------------------------------------
4     CITIZENSHIP OR PLACE OF ORGANIZATION:


      Michigan Banking Corporation
- ------------------------------------------------------------------------------
                     5    SOLE VOTING POWER:
     NUMBER OF

      SHARES              6,709
                   -----------------------------------------------------------
   BENEFICIALLY      6    SHARED VOTING POWER:

     OWNED BY
                          1,246,095
       EACH        -----------------------------------------------------------
                     7    SOLE DISPOSITIVE POWER:
    REPORTING

      PERSON              11,699
                   -----------------------------------------------------------
       WITH          8    SHARED DISPOSITIVE POWER:

                          1,241,105
- ------------------------------------------------------------------------------
 9    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON:

      1,252,804
- ------------------------------------------------------------------------------
10    CHECK THE SPACE BELOW IF THE AGGREGATE AMOUNT IN ROW 9 EXCLUDES CERTAIN
      SHARES

      [_]
- ------------------------------------------------------------------------------
11    PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9:


      22.90%
- ------------------------------------------------------------------------------
12    TYPE OF REPORTING:


      BK
- ------------------------------------------------------------------------------




                                 SCHEDULE 13G
                   Under the Securities Exchange Act of 1934

Check the following space if a fee is being paid with this statement: [_]
===============================================================================
Item 1(a):     Name of Issuer:

               TECUMSEH PRODS CO CL B

Item 1(b):     Address of Issuer's Principal Executive Offices:

               100 East Patterson Street
               Tecumseh, MI 49286

Item 2(a):     Name of Person Filing:

               Comerica Bank

Item 2(b):     Address of Principal Business Office, or if none, Residence:

               One Detroit Center
               Detroit, MI 48275

Item 2(c):     Citizenship:

               Michigan Banking Corporation

Item 2(d):     Title of Class of Securities:

               COMMON STOCK

Item 2(e):     CUSIP Number:

               878895101

Item 3.        This statement is filed pursuant to Rule 13d-1(b), or 13d-2(b).
               The filing person is a Bank as defined in Section 3(a)(6) of the
               Act.

Item 4.        Ownership:

     (a)       Amount Beneficially Owned:                            1,252,804

     (b)       Percent of Class:                                         22.90%

     (c)       Number of shares as to which such person has:

               (i)   sole power to vote or to direct the vote:           6,709

               (ii)  shared power to vote or to direct the vote:     1,246,095

               (iii) sole power to dispose or to direct the disposition:
                                                                        11,699

               (iv)  shared power to dispose or to direct the disposition:
                                                                     1,241,105

Item 5.        Ownership of Five Percent of Less of a Class:

               If this statement is being filed to report the fact that as of
               the date hereof the reporting person has ceased to be the
               beneficial owner of more than five percent of the class of
               securities, check the following: [_]

Item 6.        Ownership of More than Five Percent on Behalf of Another Person:

               HERRICK 1949 TUA FBO K HERRICK       870,401     15.91%


                              SCHEDULE 13 G
                 Under the Securities Exchange Act of 1934

Item 7:   Identification and Classification of the Subsidiary Which Acquired the
          Security Being Reported on by the Parent Holding Company:

Item 8:   Identification and Classification of Members of the Group:

Item 9:   Notice of Dissolution of Group:

Item 10:  Certification:

          By signing below I certify that, to the best of my knowledge and
          belief, the securities referred to above were acquired in the ordinary
          course of business and were not acquired for the purpose of and do not
          have the effect of changing or influencing the control of the issuer
          of such securities and were not acquired in connection with or as a
          participant of any such transaction having such purposes or effect.

          After reasonable inquiry and to the best of my knowledge and belief, I
          certify that the information set forth in this statement is true,
          complete and correct.

          Date: 02/17/2000

          Comerica Bank


          By: Stephen Graef
              Vice President, Comerica Bank