Security system lockout

[Jimmy6050]

Security has me locked out of my 2003 Silverado

[Jimmy6050]

The truck will not turn over. It ran for a week like a kitten after I replaced motor. Drove it home from work. Went back to in like 15 minutes and turned the key and nothing. Just the security light on the dash

[Jimmy6050]

Had starter checked and it's working fine. But truck won't even trun over. Tried all security tip off utube and nothing. Is my everything bad?