For 1990-2009 cars

### Removal Procedure

1. Remove the HVAC module from the vehicle. Refer to HVAC Module Assembly Replacement .
2. Remove the heater core cover screws from the HVAC module.
3. Remove the heater core cover from the HVAC module.
4. Remove the heater core from the HVAC module.

### Installation Procedure

1. Install the heater core to the HVAC module.
2. Install the heater core cover to the HVAC module.

Notice: Refer to Fastener Notice in the Preface section.

3. Install the heater core cover screws to the HVAC module.

Tighten
Tighten the screw to 1.5 N·m (13 lb in).

4. Install the HVAC module to the vehicle. Refer to HVAC Module Assembly Replacement .