heater problems

[newb23]

ok ive had this problem for awhile now, Ive changed the climate control switches, made sure the vacuum lines are good and i still cant get my heater to work any ideas?

 

[Bryan22]

make sure the heater core isn't plugged? does the truck warm up to operating temp, or run cold all the time?

 

[westcoastranger]

08 ranger no heat

all of a sudden my heater blows only cold air. AC works fine, fans work fine
but no heat. should I check the coolant?

 

[kimcrwbr1]

Are both heater lines hot going to and from the core. If the coolant is low you need to find the leak before you add new coolant.