did you use Bank of America to fund your coinbase/gdax?
was it a wire transfer?
I read their FAQs and a lot of threads about gdax wire transfers and SOO MANY deposits never go through and yet their banks charge them... they lose the money and some say for 5 months - a year and still nothing. most o the complaints are coming from people that used BOA
also, if its a wire transfer it'll show up on the next business day unless sent on a weekday before 1pm P.T. ( 4 pm where we live on the east coast ) @haejin
Hopefully you get the money soon!