Pickup 2WD V6-3137cc 31L (CPC) (1991) | HVAC Air Door Component Repair
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Air Door: Service and Repair
Heater Core and / or Mode Door
Removal
Preparation:
Battery ground cable
Drain engine coolant
Discharge and recover refrigerant (W/Air conditioning)
1. Heater unit
2. Duct
3. Case (Mode control)
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Do not remove link unit at this step.