Removing Heater Core A/C Lines

1. Recover refrigerant (EPA Section 608 certification required).
2. Disconnect battery.
3. Locate heater core lines at firewall (passenger side).
4. Use spring-lock coupling tool (Ford/GM type) to release lines from core tubes.
5. Cap open lines to prevent contamination.
6. Remove heater core if needed; reinstall in reverse.
7. Evacuate, recharge, and leak-test A/C system.

Do not vent refrigerant; it’s illegal and environmentally harmful.