GM Service Manual Online
For 1990-2009 cars only

Engine Coolant Heater Replacement - Left Side L47

Removal Procedure

  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Remove the front air deflector. Refer to Front Air Deflector Replacement in Body Front End.

  3. Object Number: 350279  Size: SH
  4. Disconnect the electrical connector at the engine coolant heater (1).
  5. Remove the engine coolant heater bolt.
  6. Remove the left engine coolant heater (1).

Installation Procedure


    Object Number: 281914  Size: SH
  1. Align the threaded hole in the engine block with the hole labeled "L" (2) on the left engine coolant heater.

  2. Object Number: 350279  Size: SH
  3. Install the left engine coolant heater (1).
  4. Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  5. Install the engine coolant heater bolt.
  6. Tighten
    Tighten the engine coolant heater bolt to 10 N·m (89 lb in).

  7. Connect the electrical connector to the engine coolant heater (1).
  8. Install the front air deflector. Refer to Front Air Deflector Replacement in Body Front End.
  9. Lower the vehicle.