I can confirm that a Sam’s Club credit card cannot be used at Walmart stores.

Although Sam’s Club is owned by Walmart, they are separate entities with their own credit card programs. The Sam’s Club credit card is issued by Synchrony Bank and is only valid for use at Sam’s Club stores, Sam’s Club gas stations, and on the Sam’s Club website. It cannot be used at Walmart stores or on the Walmart website.
Likewise, the Walmart credit card is issued by Capital One and is only valid for use at Walmart stores, Walmart gas stations, and on the Walmart website. It cannot be used at Sam’s Club stores or on the Sam’s Club website.
It is important to note that some credit cards, including those issued by major credit card companies such as Visa and Mastercard, can be used at multiple stores and locations, including both Walmart and Sam’s Club. However, it is always best to check with the specific credit card issuer and the store in question to confirm which credit cards are accepted.
In summary, while both Sam’s Club and Walmart are owned by the same company, their credit card programs are separate and cannot be used interchangeably. If you have a Sam’s Club credit card, it can only be used at Sam’s Club stores, Sam’s Club gas stations, and on the Sam’s Club website. If you wish to make a purchase at Walmart, you would need to use a different form of payment, such as a different credit card, cash, or a debit card.