Disconnect the negative battery cable.
CAUTIONAfter disconnecting the negative battery cable, wait 2 minutes for the driver-s/passenger-s air bag system capacitor to discharge before attempting to do any work around the steering column or instrument panel.
- Drain the cooling system.
- Recover the A/C refrigerant, if equipped.
Remove or disconnect the following:
Separate heater core from HVAC housing
Install or connect the following:
Heater core to HVAC housing
- Recharge the A/C refrigerant.
- Fill the cooling system.
- Start the engine and check for leaks.