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Home >> Chevrolet >> 2006 >> Cobalt LTZ >> Repair and Diagnosis >> External Pages >> Different car >> Section 641 (Heating, Ventilation, And Air Conditioning) >> Repair Instructions >> Heater Core Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2007 Pontiac G5 Pursuit, 2007 Pontiac G5, and 2007 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.
  1. Drain the cooling system. Refer to Draining and Filling Cooling System (2.0L (LSJ)) or Draining and Filling Cooling System (2.2L (L61), 2.4L (LE5)) or Draining and Filling Cooling System (GE 47716 Fill) .
  2. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
  3. Fig 1: Locating Water Pump Drain Plug/Bolt
    GM893494Courtesy of GENERAL MOTORS CORP.
  4. Place a drain pan under the water pump drain port.
  5. Loosen the water pump drain bolt and drain the coolant from the water pump.
  6. NOTE: Refer to Fastener Notice .
  7. Close and tighten the water pump drain bolt.

    Tighten:  Tighten the water pump drain bolt to 10 N.m (88 lb in).

  8. Lower the vehicle.
  9. Fig 2: View Of Heater Core Tubes And Outlet Hose
    GM872578Courtesy of GENERAL MOTORS CORP.
  10. Reposition the heater outlet hose clamp at the heater core using J 38185  .
  11. Remove the heater outlet hose from the heater core.
  12. Fig 3: View Of Heater Inlet Hose Clamp At Heater Core
    GM872572Courtesy of GENERAL MOTORS CORP.
  13. Reposition the heater inlet hose clamp at the heater core using J 38185  .
  14. Remove the heater inlet hose from the heater core.
  15. Remove the heater core cover. Refer to Heater Core Cover Replacement .
  16. Fig 4: View Of Heater Core
    GM872606Courtesy of GENERAL MOTORS CORP.
  17. Remove the heater core.