GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 2000 🢒 Firebird 🢒 Engine 🢒 Engine Cooling 🢒 Heater Core Replacement

Removal Procedure

    Object Number: 571433 Size: SH
  1. Drain the engine coolant. Refer to Cooling System Draining and Filling in Engine Cooling.
  2. Remove the heater hoses/pipes. Refer to Heater Hose Assembly Replacement .
  3. Remove the heater core tube clamp bolt.
  4. Remove the heater core tube clamp.
  5. Remove the heater core shroud seal.
  6. Remove the heater rear case bolts (2).
  7. Remove the heater rear case (4):
    8. 7.1. Slide the heater rear case (4) downward in order to disengage the upper case clip.
    7.2. Remove the heater rear case.
  8. Remove the instrument panel (IP) compartment door. Refer to Instrument Panel Compartment Door Replacement
  9. Remove the heater core clamp bolt (3).
  10. Remove the heater core clamp.
  11. Remove the heater core (1).

Installation Procedure

    Object Number: 571433 Size: SH
  1. Install the heater core.
  2. Install the heater core clamp.
  3. Install the heater core clamp bolt.

    4. Tighten
    Tighten the heater core clamp bolt to 1.8 N·m (16 lb in).

  4. Use the following steps in order to install the heater rear case (4):
    5. 4.1. Slide the heater rear case upward into position until the upper clip engages.
    4.2. Engage the snap on the left edge of the heater rear case to the distributor case.
    4.3. Install the bolts to the heater rear case.

    Tighten
    Tighten the heater rear case bolts to 2.0 N·m (18 lb in).

  5. Install the heater core shroud seal.
  6. Install the heater core tube clamp.
  7. Remove the heater core tube clamp bolt.

    8. Tighten
    Tighten the heater core tube clamp bolt to 2 N·m (18 lb in).

  8. Remove the instrument panel (IP) compartment door. Refer to Instrument Panel Compartment Door Replacement
  9. Install the heater hoses/pipes. Refer to Heater Hose Assembly Replacement .
  10. Drain the engine coolant. Refer to Cooling System Draining and Filling in Engine Cooling.