For 1990-2009 cars

### Removal Procedure

1. Remove the instrument panel from the vehicle. Refer to Instrument Panel Assembly Replacement .
2. Remove the A/C module from the vehicle. Refer to HVAC Module Assembly Replacement
3. Disconnect the heater hoses from the heater core.
4. Remove the thermistor wiring harness connector.
5. Remove the mode motor ventilation link.
6. Remove the heater core side cover with the screws.
7. Remove the heater core.

### Installation Procedure

Caution: Refer to Battery Disconnect Caution in the Preface section.

1. Install the heater core into the case.
2. Install the heater core side cover.
3. Install the tighten the screws that secure the heater core cover to the aircon module.
4. Install the mode door ventilation link and screw.
5. Connect the thermistor connector.
6. Connect the heater hoses to the heater core.
7. Install the A/C module. Refer to HVAC Module Assembly Replacement .
8. Install the instrument panel. Refer to Instrument Panel Assembly Replacement .