All demands, notices and communications to Seller or Purchaser hereunder shall be in writing, personally delivered, or sent by telecopier (subsequently confirmed in writing), reputable overnight courier or mailed by certified mail, return receipt requested, and shall be deemed to have been given upon receipt (a) in the case of Seller, to GM Financial, 801 Cherry Street, Suite 3500, Fort Worth, Texas 76102, Attention: Chief Financial Officer, or (b) in the case of Purchaser, to AFS SenSub Corp., 2215-B Renaissance Drive, Suite 10, Las Vegas, Nevada 89119, Attention: Chief Financial Officer, with a copy to AFS SenSub Corp., c/o GM Financial, 801 Cherry Street, Suite 3500, Fort Worth, Texas 76102, Attention: Chief Financial Officer, or such other address as shall be designated by a party in a written notice delivered to the other party or to the Issuer, Owner Trustee or the Trust Collateral Agent, as applicable.