Z09B4U, When you say the VATS is stupid, are you saying that when a brand new 1995 Impala rolled off the assembly line, brand spanking new, with no defects what so ever, anybody can cut the 2 VATS wires, break the column and drive away with the dash light on? All this with no resistor in place?
Yes. you only have to cut one wire to break the circuit. It allows the car to crank and run as the VATS is thinking there is a problem.
If you searched the forum you would find many posts that start " my light has been on for ..." weeks, months, or years "and my car runs".
I understood your toggle switch. It "hot wires" a connection to the starter for cranking.
If you do not like my answer get a FSM and follow the diagnostic charts.
I do not have the time to quote the FSM to back up everything.
The Four VATS Modes:
VATS sees a correct resistor value, powers the VATS/starter relay to allow cranking, and sends a PWM signal to the PCM.
VATS sees a open circuit, lights the VATS light, powers the VATS/starter relay to allow cranking, and sends a PWM signal to the PCM.
VATS sees a bad resistor value, lights the VATS light, does NOT power the VATS/starter relay to allow cranking, and does NOT send a PWM signal to the PCM.
The engine is running and the resistor signal becomes bad. The engine will run and the VATS light will be turned on.