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Disconnect the battery negative cable.
- Remove the instrument panel from the vehicle.
- If equipped with air conditioning, recover the refrigerant.
- Disconnect the liquid line refrigerant line fitting from the evaporator inlet tube.
- Ram: remove the accumulator.
- Dakota, Durango: disconnect the accumulator inlet tube.
- Drain the cooling system.
- Disconnect the heater hoses from the heater core tubes.
- Ram: remove the powertrain control module from the dash panel. Disconnecting wiring is not necessary.
- Remove the four nuts from the heater-A/C mounting studs on the engine compartment side of the dash panel.
- Remove the nut(s) that secure(s) the heater-A/C housing mounting brace to the stud(s) on the passenger compartment side of the dash board.
- Pull the housing rearward far enough for the mounting studs and evaporator condensate drain tube to clear the dash panel holes.
- Remove the housing from the vehicle.
- Lift the heater core out of the housing.
- Installation is the reverse of removal.
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