
Originally Posted by
Bronco Boy
The alarm and pass key (VATS) are not connected. The chip in the key is just a resistor that the VATS detects, thus allowing the car to start. If you have a regular key and the car starts, then the VATS has probably been modified (Google "VATS GM bypass"). An "auto start" will only trick the VATS when the remote start is activated, not all the time, so I can't see that being the issue.
So, it sounds like the VATS is disabled, and you could get a new remote for the alarm. But be aware, the alarm is really just a keyless entry with a flashing LED. I would advise on looking at an aftermarket alarm if you want that feature.