(a) Exemption from liability.--A sales finance company licensed under this chapter and engaged in the purchase, sale, assignment, securitization or servicing of installment sale contracts may not be held liable under this chapter for either of the following:
(1) Excessive markups of charges by installment sellers.
(2) A failure to disclose under section 6221(e) (relating to requirements).
(b) Federal status preserved.--This section does not affect the liability of a sales finance company that is a holder under the Federal Trade Commission Act (38 Stat. 717, 15 U.S.C. § 41 et seq.).