Truck has no heat front or rear.

[MonteLV]

My truck has no heat at all. I don't know where to look. I replaced the thermostat cause it was stuck open. It didn't help with the heat. I felt both heater hoses and they're cold. So the heater core isn't getting any coolant. Don't know what to do.

 

[poorboy1964]

after tuck has run for a while is the upper radiator hose hot that will tell you that coolant is circulating through engine, if so there is maybe a blockage in line or heater core, not much help but may give you something to look at

 

[seawalkersee]

Low on coolant. Makes it hard to have heat if there is not any coolant into the cores.

SWS