As long as you have not yet e-filed your tax return then you can. Please see the following TurboTax FAQ:
Unfortunately, if you have already e-filed your return, then you will have to wait to see if you return is accepted or reject. If rejected, you can follow the steps above and update the information. If your return is accepted, you would not be able to change the information. Once accepted if the IRS is unable to deposit the refund into the bank account provided you would then receive a paper check in the mail. If your return is accepted, you may be able to try calling the IRS e-file payment services at 1-888-353-4537 for help in updating the banking information.