Call a Customer service phone number on the back of your credit card.
Request to speak with a representative, and order credit card convenience checks.
Allow one to two weeks for the check delivery.
Call your credit card customer service again to find out your available credit.
Decide on the amount you want to deposit to your checking account keeping in mind that it has to be within your available credit.
Make a convenience check payable to yourself for the amount decided.
Deposit the convenience check to your bank checking account.