could you inform as to all options to try to reset radio the one involving pressing 2and 3 button is not responding

How to take the unlock code off a radio on a grand prix if you forget it press 2&3 for 10 seconds write down the 3 digit number then press am/fm right after write down that 3 didgit number then call 1800 537 5140 type in this dealer #620529 press 3 after you enter the number then they give you a unlock number skips paying for it being donw then prees hour set button till you have the first 2 digits of the unlock code then press min for the following 2 and then press am/fm right after there u have unlocked it

Would that cause my theft lock to be on