* Clearing the check engine light (CEL): This light indicates a problem detected by the onboard diagnostics (OBD) system. You can't just "reset" it; the underlying problem needs to be fixed. However, *after* you've addressed the issue (e.g., replaced a faulty sensor), you might need to disconnect the battery's negative terminal for a few minutes to allow the system to reset and clear the code. Reconnect the battery and start the car. The CEL should go off if the problem is truly resolved.
* Resetting the PCM (Powertrain Control Module): This is the main computer for the engine and transmission. Disconnecting the battery's negative terminal for a while (30 minutes is often sufficient) will often reset this. This might be helpful if you're experiencing some erratic behavior, but again, it won't fix underlying mechanical or electrical problems.
* Other modules: The Camaro might have other modules (like for the climate control) that could benefit from a battery disconnect reset if they're malfunctioning.
Important Note: Before disconnecting the battery, be sure to write down your radio code if you have a factory-installed radio, as disconnecting the battery will often erase it.
In short, there's no single "reset computer" button. The closest you'll get is disconnecting the battery's negative terminal for a period of time. If you're experiencing specific problems, it's best to consult a repair manual or a mechanic. They can diagnose the issue and provide a proper solution, rather than just resorting to a generic reset.
