How do you install the heater core in a 2000 Pontiac sunfire?

Answer 1

If equipped with a delco loc 2 or theftlock audio system be sure the lockout feature is turned off before disconnecting battery cable. # Disconnect the negative battery cable # drain the cooling system # Disconnect the heater hoses at the heater core inlet and outlet on the engine side of the firewall and plug the open fittings. # From the inside of the car,remove the lower right dash insulator panel and the glove box # Disconnect the ducts fromthe heater cover # Remove the instrument panel from passanger compartment # Remove the heater core cover # Remove the heater core clamp bolts and clamps then slide the heater core out carefully