Excursion 4WD V8-6.0L DSL Turbo VIN P (2004)
8. NOTE: The remaining three screws securing the heater core cover will be removed once the air conditioning and heater assembly is removed.
Remove five screws from the heater core cover.
9. Disconnect the electrical connectors and set the wiring assembly aside.
10. Remove the fasteners and remove the lower air duct.
11. CAUTION: Place protective caps over the open refrigerant lines to avoid contamination of the A/C system.
Disconnect the refrigerant lines.
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Discard the O-ring seals.
