I must've tried 30 times to withdraw while I waited on their cust srvc phone line....after exactly 2hr on hold, an automated voice came on "we won't be able to assist you..." and dropped the call.
But hey! it's an improvement over MtGox, in the sense they have a phone to call and the elevator music won't make you puke.... glad to read others are getting their coins out.

Edit: signed out of GDAX, back in, and tried the withdrawal shortly after logging in...went through.