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To replace the heater core in a 1998 Oldsmobile Bravada, first, disconnect the negative battery cable and drain the coolant from the radiator. Then, remove the dashboard and center console to access the HVAC unit. Disconnect the heater core hoses from the engine compartment, unbolt the HVAC housing, and carefully remove the old heater core. Install the new heater core in reverse order, ensuring all connections are secure before reassembling the dashboard and refilling the coolant.

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1mo ago

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