Where is the turbo waste gate actuator located at on a 1994 Chevy silverado 3500 diesel?

On a 1994 Chevy Silverado 3500 diesel (likely equipped with a 6.5L Detroit Diesel), the turbocharger wastegate actuator is typically located on the turbocharger itself. It's a small, usually cylindrical, component connected to the wastegate linkage arm on the turbo. You'll find it somewhere on the turbocharger housing, likely near the wastegate mechanism.

Because of the location and potential for heat, it's often difficult to see without removing some components or at least getting a very good angle. A shop manual specific to that year and engine would be your best resource for an exact picture and location. You can also find pictures online by searching for "1994 Chevy Silverado 3500 6.5L turbo wastegate actuator location". Be aware that images might vary slightly depending on the specific turbocharger model used.