Filed under Rule 424(b)(2), Registration Statement No. 333-218881 Preliminary Pricing Supplement No. 8 - Dated Monday, November 6, 2017 (To: Prospectus dated June 21, 2017) CUSIP Selling Gross Net Principal Coupon Coupon Coupon Maturity 1st Coupon 1st Coupon Survivor’s Product Guarantor Number Price Concession Proceeds Amount Type Rate Frequency Date Date Amount Option Ranking SEMI- Senior AmeriCredit Financial 37046AAP0 100% 1.250% [] [] Fixed 2.850% 11/20/2022 05/20/2018 $14.57 Yes ANNUAL Unsecured Notes Services, Inc. Redemption Information: Callable at 100% on 10/20/2018 and Semi-Annually thereafter with 30 Calendar Days Notice. GM Financial Term Notes will be subject to redemption at the option of General Motors Financial Company, Inc., in whole on the interest payment date occurring any time on or after 11/20/2018 at a redemption price equal to 100% of the principal amount of the GM Financial Term Notes, plus accrued interest thereon, if any, upon at least 30 Calendar Days prior notice to the noteholder and the trustee, as described in the Prospectus. SEMI- Senior AmeriCredit Financial 37046AAQ8 100% 1.800% [] [] Fixed 3.900% 11/20/2027 05/20/2018 $19.93 Yes ANNUAL Unsecured Notes Services, Inc. Redemption Information: Callable at 100% on 10/20/2018 and Semi-Annually thereafter with 30 Calendar Days Notice. GM Financial Term Notes will be subject to redemption at the option of General Motors Financial Company, Inc., in whole on the interest payment date occurring any time on or after 11/20/2018 at a redemption price equal to 100% of the principal amount of the GM Financial Term Notes, plus accrued interest thereon, if any, upon at least 30 Calendar Days prior notice to the noteholder and the trustee, as described in the Prospectus. Offering Dates: Monday, November 6, 2017 through Monday, November 13, 2017 General Motors Financial Company, Inc. Trade Date: Monday, November 13, 2017 @ 12:00 PM ET GM Financial Term Notes Settlement Date: Thursday, November 16, 2017 Prospectus dated June 21, 2017 Minimum Denomination/Increments: $1,000/$1,000 General Motors Financial Company, Inc. Initial trades settle flat and clear SDFS: DTC Book Entry only DTC Number: 0235 via RBC Dain Rauscher Inc. Purchasing Agent: Incapital LLC Agents: BofA Merrill Lynch, Morgan Stanley, RBC Capital Markets, Wells Fargo Advisors Trustee: U.S. Bank National Association If the maturity date or an interest payment date for any note is not a Business Day (as term is defined in Prospectus), principal, premium, if any, and interest for that note is paid on the next Business Day, and no interest will accrue from, and after, the maturity date or interest payment date. Dealers purchasing Notes on an agency basis for client accounts shall purchase Notes at the public offering price. Notes sold by the Selected Dealers for their own account may be sold at the public offering price less a discount as specified above. Notes purchased by the Selected Dealers on behalf of level fee accounts may be sold to such accounts at the discount to the public offering price specified above, in which case, such Selected Dealers will not retain any portion of the sales price as compensation.