Where is heater control valve on dodge ram 1999?

The heater control valve on a 1999 Dodge Ram is located under the dash, near the firewall on the passenger side. It's often difficult to access and may require partial dashboard disassembly to reach. It's a relatively small valve, usually connected to heater hoses.

However, there's a crucial caveat: 1999 Dodge Rams didn't necessarily *all* have a separate heater control valve in the same way some other vehicles do. The heating system's operation might be controlled by a blend door actuator within the HVAC system itself, rather than a separate valve.

To be certain, you'll need to:

1. Consult a repair manual specific to your 1999 Dodge Ram's engine and trim level. This manual will have diagrams and precise locations.

2. Search online for diagrams or videos showing the HVAC system for a 1999 Dodge Ram. YouTube searches can be helpful. Be sure to specify your engine type (e.g., 5.2L, 5.9L, etc.) for the most accurate results.

Without knowing the specific engine and trim of your truck, pinpointing the exact location is impossible. The information above gives you a general area to start, but using a repair manual is essential for accurate identification.