Q: What should be done before servicing the Heater Core?
A:
Remove the Heater Core tubes from the heater core while leaving the heater hoses connected to the tubes.
Q: What should be done before servicing the Air Conditioning Condenser?
A:
Recover the refrigerant. Remove the A/C discharge line at the condenser. Remove the A/C liquid line at the condenser. Pinch the fastening tabs together at top of the condenser and slide upward to remove them.