S.D. Codified Laws § 20-9-9
No cause of action based on the doctrine of strict liability in tort may be asserted or maintained against any distributor, wholesaler, dealer, or retail seller of a product which is alleged to contain or possess a latent defective condition unreasonably dangerous to the buyer, user, or consumer unless said distributor, wholesaler, dealer, or retail seller is also the manufacturer or assembler of said product or the maker of a component part of the final product, or unless said dealer, wholesaler, or retail seller knew, or, in the exercise of ordinary care, should have known, of the defective condition of the final product. Nothing in this section shall be construed to limit any other cause of action from being brought against any seller of a product.
SDCL 20-9-9