Tennessee Code Title 47. Commercial Instruments and Transactions § 47-25-623

(a)(1) It is unlawful for any refiner, distributor, or producer of petroleum products engaged in business in this state, either directly or indirectly, to discriminate in prices between purchasers for petroleum products of like grade and quality, where either or any of the purchases involved in such discrimination are in commerce, where such petroleum products are sold for use, consumption, or resale within the state of Tennessee, and where the effect of such discrimination may be substantially to lessen competition or tend to create a monopoly in any line of commerce, or to injure, destroy, or prevent competition with any person who either grants or knowingly receives the benefit of such discrimination, or with customers of either of them; provided, that nothing in this section shall prevent:

(2) It is unlawful for any refiner, distributor, or producer of petroleum products to refuse to make available, upon written request of any dealer who has a franchise agreement with the refiner, distributor, or producer, a schedule of dealer tank wagon prices then charged dealers of the refiner, distributor, or producer for motor gasoline sold within the state of Tennessee.