As
long as you have not yet e-filed your tax return
then you can. Please see
the following TurboTax FAQ:
https://ttlc.intuit.com/replies/5619072
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.