Heater Unit/Core Replacement
SRS components are located in this area. Review the SRS component locations and the precautions and procedures before doing repairs or service.
  1. Make sure you have anti-theft codes for the audio system and navigation system (if equipped).
  1. Make sure the ignition is OFF, then disconnect the negative cable from the battery.
  1. Disconnect the A/C line from the evaporator core.
  1. When the engine is cool, drain the engine coolant from the radiator.
  1. From under the hood, slide the hose clamps (A) back. Disconnect the inlet heater hose (B) and the outlet heater hose (C) from the heater unit. Note the orientation of the hoses.
    Engine coolant will run out when the hoses are disconnected; drain it into a clean drip pan. Be sure not to let coolant spill on the electrical parts or the painted surfaces. If any coolant spills, rinse it off immediately.