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                              November 9, 2021

       George Syllantavos
       Co-Chief Executive Officer
       Growth Capital Acquisition Corp.
       300 Park Avenue, 16th Floor
       New York, New York, 10022

                                                        Re: Growth Capital
Acquisition Corp.
                                                            Amendment No. 1
Registration Statement on Form S-4
                                                            Filed October 21,
2021
                                                            File No. 333-259391

       Dear Mr. Syllantavos:

             We have reviewed your amended registration statement and have the
following
       comments. In some of our comments, we may ask you to provide us with
information so we
       may better understand your disclosure.

              Please respond to this letter by amending your registration
statement and providing the
       requested information. If you do not believe our comments apply to your
facts and
       circumstances or do not believe an amendment is appropriate, please tell
us why in your
       response.

              After reviewing any amendment to your registration statement and
the information you
       provide in response to these comments, we may have additional comments.
Unless we note
       otherwise, our references to prior comments are to comments in our
October 6, 2021 letter.

       Amendment No. 1 to Registration Statement on Form S-4

       Summary of the Proxy Statement/Consent Solicitation Statement/Prospectus
       Impact of the Business Combination on GCACs Public Float, page 40

   1.                                                   Please revise the
tables to present the pro forma New Cepton shares of common stock
                                                        issued and outstanding
immediately after the Business Combinations under the four
                                                        redemption scenarios,
similar to your disclosure on page 108.
       The GCAC Charter and the Amended and Restated Charter, page 96

   2.                                                   We note your repose to
prior comment 24. We note your disclosure the Amended and
                                                        Restated Charter
provides that "the exclusive forum provision shall not apply to claims or
                                                        causes of action
brought to enforce a duty or liability created by the Securities Act or the
 George Syllantavos
Growth Capital Acquisition Corp.
November 9, 2021
Page 2
         Exchange Act, or any other claim for which the federal courts have
exclusive
         jurisdiction." This does not appear to be reflected in Articles XI on
page B-7. If your
         provision does not apply to actions arising under the Securities Act
or Exchange Act,
         please also ensure that the exclusive forum provision in the governing
documents states
         this clearly, or tell us how you will inform investors in future
filings that the provision
         does not apply to any actions arising under the Securities Act or
Exchange Act.
Unaudited Pro Forma Condensed Combined Financial Information, page 105

3.       We note your updated disclosure on pages 109 and 110 in response to
prior comment 14
         and reissue in part. Please clearly show the number of shares
authorized, issued and
         outstanding both on a historical and pro forma basis.
Certain Projected Financial Information, page 151

4.       We note your response to our prior comment 21. Please include this
discussion, or a
         reference thereto, in the Certain Projected Financial Information
section on page 36.
General

5.       We note your response to our prior comment 3 and reissue in part.
Please clarify whether
         recent common stock trading prices exceed the threshold that would
allow the company to
         redeem public warrants.
       You may contact SiSi Cheng at (202)-551-5004 or John Cash at
(202)-551-3768 if you
have questions regarding comments on the financial statements and related
matters. Please
contact Bradley Ecker at (202)-551-4985 or Asia Timmons-Pierce at
(202)-551-3754 with any
other questions.



FirstName LastNameGeorge Syllantavos                            Sincerely,
Comapany NameGrowth Capital Acquisition Corp.
                                                                Division of
Corporation Finance
November 9, 2021 Page 2                                         Office of
Manufacturing
FirstName LastName