Passlock trouble after putting original ignition switch back on

There is a short and a long reset procedure for the GM PassLock system. The 10 minute on and 10 seconds off is the short reset and works if there is a minor issue with the system. Replacing the switch probably requires the long reset procedure. The long reset just repeats the short procedure three times. You must do the steps in proper order and on time within a few seconds or you have to start all over from the beginning. This means 30 minutes 30 seconds if you get it all correct. If this doesn’t work, then something may have been disconnected during the changes, everything has to be properly connected and working for the resets to work.