The orifice tube (or expansion valve, depending on the system) on a 2002 Camaro's A/C system isn't easily accessible and isn't located in a single, easily-described spot. It's
within the HVAC system's evaporator housing, usually near the evaporator itself. To access it, you'll need to remove significant parts of the dashboard and possibly the HVAC system itself. This is a job best left to an experienced automotive technician familiar with the specific model year.
There's no single "easy to find" location. Repair manuals specific to a 2002 Camaro will provide diagrams and instructions for accessing this component. Attempting to locate it without such a manual and proper expertise could lead to damage to your vehicle.
