GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Saturn 🢒 2003 🢒 VUE - FWD 🢒 Engine 🢒 Engine Cooling 🢒 Heater Core Replacement

Removal Procedure
  1. Drain the engine coolant. Refer to Cooling System Draining and Filling in Engine Cooling.
  2. Remove the heater outlet hose from the heater core. Refer to Heater Outlet Hose Replacement .
  3. Remove the heater inlet hose from the heater core. Refer to Heater Inlet Hose Replacement .
  4. Remove the instrument panel retainer. Refer to Instrument Panel Retainer Replacement in Instrument Panel, Gages, and Console.
  5. Remove the shift control bracket. Refer to Transmission Shift Control Bracket Replacement in Manual Transmission -- Getrag 5, Transmission Control Bracket Replacement in Automatic Transaxle -- AF33-5, or Transmission Control Bracket Replacement in Automatic Transmission -- VT25-E.

    6. Object Number: 933065 Size: SH
  6. Remove the heater duct screws.
  7. Remove the heater duct.

    8. Object Number: 933022 Size: SH
  8. Remove the heater core cover screws.
  9. Remove the heater core cover.

    10. Object Number: 932938 Size: SH
  10. Remove the heater core pipe cover screw.
  11. Remove the heater core pipe cover.
  12. Remove the heater core pipe foam seal.

    13. Object Number: 932945 Size: SH
  13. Grasp the heater core at end tanks and remove heater core. Spray the perimeter of the heater core seal and the heater core pipes at the front of dash with a soap and water mixture to ease removal.

Installation Procedure

    Object Number: 932957 Size: SH
  1. Install the heater core. Spray the perimeter of the heater core seal and the heater core pipes at the front of dash with a soap and water mixture to ease installation.

    2. Object Number: 932938 Size: SH
  2. Install the heater core pipe seal.
  3. Install the heater core pipe cover.

    4. Notice: Refer to Fastener Notice in the Preface section.

  4. Install the heater core pipe cover screw.

    5. Tighten
    Tighten the screw to 1 N·m (9 lb in).


    Object Number: 932922 Size: SH
  5. Spray the front of dash seal at the drain tube opening to aid in heater core cover installation.

    6. Object Number: 933022 Size: SH
  6. Install the heater core cover.
  7. Install the heater core cover screws.

    8. Tighten
    Tighten the screw to 1 N·m (9 lb in).


    Object Number: 933065 Size: SH
  8. Install the heater duct.
  9. Install the heater duct screws.

    10. Tighten
    Tighten the screw to 1 N·m (9 lb in).

  10. Install the instrument panel retainer. Refer to Instrument Panel Retainer Replacement in Instrument Panel, Gages, and Console.
  11. Install the shift control bracket. Refer to Transmission Shift Control Bracket Replacement in Manual Transmission -- Getrag 5, Transmission Control Bracket Replacement in Automatic Transaxle -- AF33-5, or Transmission Control Bracket Replacement in Automatic Transmission -- VT25-E.
  12. Install the heater inlet hose to the heater core. Refer to Heater Inlet Hose Replacement .
  13. Install the heater outlet hose to the heater core. Refer to Heater Outlet Hose Replacement .
  14. Replace the engine coolant. Refer to Cooling System Draining and Filling in Engine Cooling.