To find the specific solenoid, you need to be more precise about the problem you're experiencing.
* For transmission problems (like slipping, rough shifting, etc.): The shift solenoids are *inside* the transmission itself. You'll need to remove the transmission to access them. A mechanic will have the appropriate tools and knowledge to do this.
* For fuel-related problems (like hard starting, misfiring, etc.): The fuel injectors have solenoids built into them. These are located on the intake manifold, one for each cylinder. They are small, cylindrical components with electrical connectors.
Provide more details about the issue, and I can try to give you a more precise location. A picture of the problem area would be very helpful.
