* Starter Solenoid: This is the most common solenoid people ask about. It's usually located near the starter motor, on the engine block.
* Transmission Solenoid(s): Automatic transmissions have multiple solenoids inside the transmission case. You can't get to them without removing the transmission.
* Fuel Injection Solenoid(s): These control fuel delivery and are part of the fuel injection system. Their location varies depending on the fuel injection type (e.g., throttle body injection or multi-port fuel injection).
Give me more details about which solenoid you're looking for, and I can give you a more accurate location.