POWER OF ATTORNEY
Know all by these presents, that the undersigned hereby constitutes
and appoints each of Jeffrey A. Belisle, Joyce M. Daniels, and Linda
L. Rosten as the undersigned's true and lawful attorneys-in-fact to:

(1)	execute for and on behalf of the undersigned, in the
undersigned's capacity as a reporting person of Ally Financial Inc.
(the "Company") pursuant to Section 16 of the Securities Exchange Act
of 1934, as amended (the "Exchange Act"), and the rules thereunder,
Forms 3, 4 and 5 in accordance with Section 16(a) of the Exchange
Act;

(2)	do and perform any and all acts for and on behalf of the
undersigned which may be necessary or desirable to complete and
execute any such Form 3, 4 or 5 and timely file such form with the
United States Securities and Exchange Commission and the applicable
stock exchange or similar authority; and

(3)	take any other action of any type whatsoever in connection with
the foregoing which, in the opinion of any of such attorneys-in-fact,
may be of benefit to, in the best interest of, or legally required
by, the undersigned, it being understood that the documents executed
by any of such attorneys-in-fact on behalf of the undersigned
pursuant to this Power of Attorney shall be in such form and shall
contain such terms and conditions as any of such attorneys-in-fact
may approve in his/her discretion.

The undersigned hereby grants to each such attorney-in-fact full
power and authority to do and perform any and every act and thing
whatsoever requisite, necessary, or proper to be done in the exercise
of any of the rights and powers herein granted, as fully to all
intents and purposes as the undersigned might or could do if
personally present, with full power of substitution or revocation,
hereby ratifying and confirming all that any of such attorneys-in-
fact, or the substitute or substitutes of any of such attorneys-in-
fact, shall lawfully do or cause to be done by virtue of this Power
of Attorney and the rights and powers herein granted. The undersigned
acknowledges that the foregoing attorneys-in-fact, in serving in such
capacity at the request of the undersigned, are not assuming, nor is
the Company assuming, any of the undersigned's responsibilities to
comply with Section 16 of the Exchange Act.

This Power of Attorney shall remain in full force and effect until
the undersigned is no longer required to file Forms 3, 4 and 5 with
respect to the undersigned's holdings of and transactions in
securities issued by the Company, unless earlier revoked by the
undersign in a signed writing delivered to the foregoing attorneys-
in-fact.

IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney
to be executed as of this 27th day of May, 2020.



Signature:	/s/ Brian H. Sharples

Name:		Brian H. Sharples