To help me answer your question accurately, please specify which module you need to locate. For example, are you looking for:
* Body Control Module (BCM): This controls many electrical functions.
* Powertrain Control Module (PCM) / Engine Control Module (ECM): This controls the engine and transmission.
* Transmission Control Module (TCM): (Separate from PCM in some models) This controls the automatic transmission.
* Anti-lock Brake System (ABS) Module: Controls the anti-lock brakes.
* Airbag Control Module: Controls the airbag system.
* Another module? (e.g., radio, window, etc.)
Once you tell me which module you're looking for, I can try to give you a more precise location. You may also want to consult your owner's manual or a repair manual specific to your 2005 Chevy Cobalt.