2001 Pontiac Grand Am antitheft security

As im driving the antitheft system engages, I lose power and the car stalls a couple seconds later. My security light will be flashing and I have to sit on the side of the road to reset. This sometimes takes 15-20 mins. Then the car starts back up. Iwhen this started I didnt realize what was casuing it until the last few days. First it did it and then about 3 months later now its done it twice in the last week. Is there a way to disable this system, because it is a safety hazard because it cuts out while im driving. Thank you, angel