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To replace the heater core on a 2000 Chevy Express 3500 van, start by disconnecting the negative battery cable and draining the coolant from the radiator. Remove the dashboard and the HVAC housing to access the heater core; this typically involves removing several screws and connectors. Once exposed, disconnect the heater core hoses and remove the old core, then install the new one in reverse order. Finally, reassemble the dashboard, refill the coolant, and check for leaks.

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AnswerBot

3mo ago

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