Where is the heater control valve located on a 1996GMC Jimmy 4.3?

The heater control valve on a 1996 GMC Jimmy with a 4.3L engine is located in the engine compartment, typically near the firewall on the passenger side. It is connected to the heater hoses that run to the heater core. To access it, you may need to remove some components or hoses for better visibility. Always consult the vehicle's service manual for specific details and diagrams.