S.D. Codified Laws § 32-6B-58.1
A franchisor, component manufacturer, or manufacturer that provides a separate warranty for an engine, transmission, or rear axle installed in a commercial medium- and heavy-duty on-highway vehicle, as defined in 49 U.S.C. § 32901(a)(7) as of January 1, 2021, shall compensate any authorized repair facility that performs warranty work to repair or replace the engine, transmission or rear axle upon the same terms and conditions as provided in § 32-6B-61 for compensation of warranty work performed by a vehicle dealer. The franchisor, component manufacturer, or manufacturer shall pay all claims made by the facility for the labor and parts within thirty days following approval. The franchisor, component manufacturer, or manufacturer shall either approve or disapprove the claim within thirty days after receiving the claim. If a claim is disapproved, the facility that submitted the claim shall be notified in writing of the claim's disapproval within the thirty-day period. Any claim rejected for technical reasons may be put into proper form by the facility. Any claim resubmitted by the facility within thirty days after the receipt of the claim shall be considered to be approved and payment shall be made within thirty days. The franchisor, component manufacturer, or manufacturer has the right to audit any facility's claim for a period of one year after the claim is paid to the facility and to charge back to the facility the amount of any unsubstantiated claim. If there is evidence of fraud by the facility, the audit period is two years from the actual or constructive notice of facts constituting the alleged fraud.
SDCL 32-6B-58.1