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Home >> GMC >> 2018 >> Acadia Denali, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 366 (Heating, Ventilation, And Air Conditioning) >> Repair Instructions >> Heater Core Outlet Tube Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2017 GMC Acadia. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Heater and Air Conditioning Evaporator and Blower Module
    GM4298004Courtesy of GENERAL MOTORS COMPANY
  1. Remove Heater and Air Conditioning Evaporator and Blower Module (1). Refer to Heater and Air Conditioning Evaporator and Blower Module Removal and Installation (C59) Heater and Air Conditioning Evaporator and Blower Module Removal and Installation (Without C59) 
    2. Fig 2: Heater and Air Conditioning Evaporator and Blower Module Seal And Heater Core Tube Bracket Bolts
    GM4298289Courtesy of GENERAL MOTORS COMPANY
  2. Remove Heater and Air Conditioning Evaporator and Blower Module Seal (1)
  3. Remove Heater Core Tube Bracket Bolts (2) (Qty: 2)
    4. Fig 3: Heater Core Outlet Tube
    GM4298324Courtesy of GENERAL MOTORS COMPANY
  4. Rotate the heater core tube bracket (1) to the open position.
  5. Disengage Heater Core Tube Clamp (2) (Qty: 2)
  6. Remove both heater core tubes from the heater core.
  7. DISCARD the O-ring seal.
  8. Remove Heater Core Outlet Tube (3)
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