my truck wont start-the security padlock is on in the cluster. How can I bypass on 2004 Chevrolet Silverado 1500

ran fine last night -parked it and this am wont work

Asked by for the 2004 Chevrolet Silverado 1500
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