To increase a Gap Credit Card limit, the cardholder typically needs to request a limit increase directly through their account. This can often be done online by logging into the cardholder's account on the respective Gap or credit card website. In the account management section, there should be an option for a credit limit increase request. Cardholders may be asked to provide information regarding their income, employment status, and housing expenses. It is essential to maintain a good payment history and responsible credit utilization, as these factors play a role in the approval of the request. Additionally, some cardholders may receive automatic increases based on their credit behavior. For specific guidelines and eligibility requirements, it may be helpful to refer to the official Gap or Visa Inc. website. If needed, the current webpage can provide more details on how to proceed with the request.