i try to start it sometimes will not turnover and security light blinks on 2005 Chevrolet Impala

After 10 min or so i try again and it starts

Asked by for the 2005 Chevrolet Impala
The theft system likely has intermitant fault. Try a differant ignition key if you have one. Several differt things in system can cause this problem. Passlock sensor and body control module are common failures. Proper diagnosis is required to determine faults.