Heater Core: Service and Repair

Removal

WARNING:
- On vehicles equipped with airbags, disable the airbag system before attempting any steering wheel, steering column, or instrument panel component diagnosis or service. Disconnect and isolate the battery negative (ground) cable, then wait two minutes for the airbag system capacitor to discharge before performing further diagnosis or service. This is the only sure way to disable the airbag system. Failure to take the proper precautions could result in an accidental airbag deployment and possible personal injury.
- Review the warnings in the front of this section before performing the following operation.

The HVAC housing must be removed from the vehicle to service the heater core.

1. Open the hood and disconnect the negative battery cable remote terminal from the remote battery post.
2. Remove the HVAC unit housing from vehicle. Refer to: Heating and Air Conditioning, Housing Assembly HVAC, Service and Repair, HVAC Housing Removal and Installation,

3. With the HVAC housing out of the vehicle, remove (2) screws retaining the heater core. Then pull the heater core out of the HVAC housing.

Installation

WARNING: Review the warnings in the front of this section before performing the following operation.

1. Install the heater core in the HVAC housing. Tighten the retaining screws to 2.2 Nm (20 in. lbs.).
2. Install the HVAC housing in the vehicle. Refer to: Heating and Air Conditioning, Housing Assembly HVAC, Service and Repair, HVAC Housing Removal and Installation,

3. Connect the negative battery cable remote terminal to the remote battery post.