It's highly unlikely to be easily found without a wiring diagram. You'll likely need a wiring diagram specific to your *exact* 1997 Chevy Lumina to trace the anti-theft system's circuits and locate the module. These diagrams can sometimes be found online through repair manuals (like Chilton's or Haynes) or subscription-based repair databases.
Possible Locations (but not guaranteed):
* Under the dashboard: This is a common location for many electronic modules. You might find it tucked away behind the instrument panel or under the glove compartment.
* Under the rear seat: Less common, but possible for some vehicles.
* Integrated into the BCM (Body Control Module): The anti-theft system might be integrated into the BCM itself. Locating the BCM is a better starting point than looking for a separate module. The BCM location varies, but it is often under the dashboard or near the steering column.
Recommendation:
To find it, the most reliable method is to:
1. Obtain a wiring diagram for your specific 1997 Chevy Lumina. This diagram will show the location of the anti-theft module or the relevant circuits within the BCM.
2. Consult a mechanic or auto electrician: They have the experience and tools to locate the module efficiently.
Trying to locate the module without a diagram is difficult and risky; you could accidentally damage other components.
