What does it mean when the security light comes on in your 2000 Chevy venture van?

When the security light comes on in your 2000 Chevy Venture van, it typically indicates an issue with the vehicle's anti-theft system. This could mean that the system is activated, or there may be a problem with the key or ignition, such as a faulty key or a malfunctioning security module. If the light stays on or blinks, it may prevent the vehicle from starting, signaling that you should check the key's transponder or consult a mechanic for further diagnosis.