theftloc code for 2001 tahoe

my radio just locked up on me and i dont have the slightest reason why and i dont have the code to unlock it being that i bought the suv used and previous owner programed it in.

Does anyone have the code for 2001 tahoe to unlock the radio? I pretty much have the instructions on how to do it but i cant find the code anywhere unless having to pay for it

thank you