2001 Blazer Radio Locked

Hi, Could someone help me with the code to unlock my radio. I changed the battery and now my radio is locked. I know it's a four digit code - and I really don't wanna have to start with "1111" - and also do I just pull the fuse after each wrong code to start again?

I found it!!! FYI: The code for 2001 Blazer is 1101