No heat

Hi, Dave here, assisting on RepairPal since 2010 Is it blowing no air or just cold air? That's important to learn. If you are not getting hot air it can be because the engine's thermostat, as one example, is sticking open too long. If it sticks open too long the engine may never get to operating temperature and you may never get heat. Have this checked first. You could also have a climate control issue inside the vehicle - blending too much cool air instead of warm. Hands on testing is needed; seek guidance from a shop near you.