HelloCustomer Is the heater core leaking or just plugged up and you have no heat. If it is just plugged you can flush it out with your garden hose. Run water through the heater hoses both ways until clean. Then flush the block out good too. Here are the steps to replace it. It located in the lower center of the dash, You most likely don't even need these steps. The labor time on it is less then 2 hours so it is not a hard job.
Important: Position the heater outlet cover downward and rearward in order to disconnect the cover from the rear area floor duct assembly.