my truck wont start-the security padlock is on in the cluster. How can I bypass

You cannot bypass the security system. You can put the key in ignition and crank it for 1 second, then leave it in run for 10 minutes ( make sure the battery doesnt go dead) hook up a charger if you have to. After 10 minutes turn key off then try to start it again. If it starts drive it straight to repair shop. There is a security problem