Where is the heater actuator located on 1989 g20 Chevy van?

In a 1989 Chevy G20 van, the heater actuator is typically located under the dashboard on the passenger side. It is mounted to the heater box, which is situated near the center of the vehicle's interior. To access it, you may need to remove the lower dash panel and possibly the glove compartment for better visibility and access.