Where is heater control valve on 1998 Chevy Astro Van?

The heater control valve on a 1998 Chevy Astro van is located within the engine compartment, near the firewall, on the passenger side. It's part of the heater core plumbing. However, pinpointing the *exact* location without a visual reference (like a repair manual or diagrams specific to your van's engine) is difficult. It's usually a fairly small valve with hoses connected to it.

To locate it, you'll likely need to:

* Consult a repair manual: A Haynes or Chilton manual for your specific year and model Astro van will have diagrams showing the location and components of the heater system.

* Use online resources: Sites like autozone.com often have diagrams and repair guides. Search for "1998 Chevy Astro heater control valve location" or something similar.

* Trace the heater hoses: Follow the heater hoses from the engine to the firewall. The valve will be somewhere along that line.

Caution: Be careful when working around hot engine components. Let the engine cool completely before attempting to locate and inspect the valve.