Yes! In fact, you should choose a PIN that is unique to you.
When activating your new debit card, the automated system will ask if you want to select your own PIN after you have entered the generated PIN that you received in the mail.
Remember not to share your PIN with anyone. Your PIN acts as a signature when you use your debit card for point of sale transactions and to withdraw cash from an ATM. When your PIN is used with a transaction, we’re validating that it is you.