When trying to execute. it keep on saying security access denied how can I fix this

The files you are using was not coded for that IPC. Use sps to get the correct files for the IPC. Make sure you use the original vin that was originally in the IPC to get the correct files from gm sps service. 

I did and I follow your course 

Anyway you can help

The files you are using are not made for that IPC. That is why you get the security access message. Those files' security access codes differ from the IPC's security.

I cannot help. You have to get the correct files for that IPC. Maybe someone changed the VIN in that IPC. Try the model name and correct year for that IPC with GM sps service.