GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Generic 🢒 2005 🢒 Unit Repair 🢒 Engine 🢒 Engine Cooling 🢒 Coolant Heater Replacement

Removal Procedure

    Object Number: 296201 Size: SH
  1. Drain the cooling system. Refer to Cooling System Draining and Filling .
  2. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  3. Disconnect the engine coolant heater cord from the engine coolant heater.
  4. Loosen the engine coolant heater bolt. Do not remove the engine coolant heater bolt.
  5. Remove the engine coolant heater.
  6. Clean the engine coolant heater opening.

Installation Procedure

    Object Number: 296172 Size: SH
  1. Coat the following components with the lubricant GM P/N 12345996 (Canadian P/N 10953501) or the equivalent:
    2. • The engine block heater seal
    • The cleaned surface of the engine block heater hole
  2. Install the engine coolant heater. Position the engine coolant heater element at the 3 o'clock position (2), as shown.

    3. Final installed position between 2 o'clock (1) and 4 o'clock (3) is acceptable.

    Notice: Refer to Fastener Notice in the Preface section.

  3. Tighten the engine coolant heater bolt.

    4. Tighten
    Tighten the bolt to 2 N·m (18 lb in).

  4. The engine coolant heater cord must not touch the engine , hot pipes, manifold, or any moving parts. Secure the engine coolant heater cord with tie straps as required.
  5. Connect the engine coolant heater cord to the engine coolant heater.
  6. Lower the vehicle.
  7. Fill the cooling system. Refer to Cooling System Draining and Filling .
  8. Inspect for leaks.