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To replace the heater core in a 1984-1989 Nissan 300ZX, first disconnect the battery and drain the coolant. Remove the dashboard and the center console to access the heater core. Detach the heater hoses from the core, unbolt it from the housing, and then install the new heater core by reversing the disassembly steps. Reconnect all components, refill the coolant, and check for leaks.

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AnswerBot

2mo ago

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