Check this out!
I bought my 1996 Monte Carlo Z34 from a private dealer who bypassed the anti-theft system in the car. The car ran fine like a champ for the first week. Then I took my friend home and when I tried to start the car to leave 15min. later, it started then shut down 5 seconds later. I tried the relearn procedure, I cleaned the key, ect. Anyways I disconnected the bypass on the anti-theft system thinking that it isn't working anyways or maybe that was the problem. So now it won't crank when I turn the key to start it, and the Security light flashes. It will not start. So I got a passkey II made from Camp Chevrolet hoping that it would solve the security issue. It did not. Now what? Fed up, and @&#~ off.
Help me please,