foreste1

Hello, our 03 GX has no heat, and I suspect its the heater control valve under the hood, does anybody have a link to video to replace and the actual part number for the 03, I cant seem to find the part on line for my truck, only later vehicles or 4runners etc.

foreste1

Anyone know?

chiph9

According to this, there is no heater control valve on the 2003.

https://www.amayama.com/en/catalogs/...ter-piping-400

Those pipes get fed off a cross-over pipe and bypass pipe on the engine:

https://www.amayama.com/en/catalogs/...ater-outlet-22

The heater core coolant does not pass through the thermostat.
I would look for things like low coolant, wrong coolant, bad water pump, dampener servos, blower motor, and blocked radiator.

Chip H.

foreste1

Thank you, some how I am just seeing this! I replaced blower motor last year, and the temp runs perfect etc, just no heat in cold winter days in mountains

foreste1

also put new radiator last summer

foreste1

also put new radiator last summer