Updated January 31, 2020 – Below you will find the key information you need since a GM Card support (issued by Capital One) to access your account online, make payments, and reach customer service for further assistance. Note that since GM credit cards (including BuyPower and Extended Family cards) are issued through Capital One, you will connect to Capital One for your GM Card, just as if it was any other Capital One credit card.
GM Card and Capital One
P. O. Box 71083
Charlotte, NORTH CAROLINA 28272-1083