GM Service Manual Online
For 1990-2009 cars only

Coolant Heater Replacement V6

Removal Procedure


    Object Number: 1616612  Size: SH
  1. Drain the cooling system. Refer to Cooling System Draining and Filling.
  2. Disconnect the engine coolant heater cord (2) from the engine coolant heater.

  3. Object Number: 1584087  Size: SH
  4. Remove the engine coolant heater.
  5. Clean the engine coolant heater opening.

Installation Procedure

    Caution: Refer to Fastener Caution in the Preface section.


    Object Number: 1584087  Size: SH
  1. Apply sealer to the threads of the engine coolant heater, if necessary. Refer to Adhesives, Fluids, Lubricants, and Sealers.
  2. Install the engine coolant heater and tighten to 60 N·m (44 lb ft).

  3. Object Number: 1616612  Size: SH
  4. Connect the engine coolant heater cord (2) to the engine coolant heater.
  5. Lower the vehicle.
  6. Fill the cooling system. Refer to Cooling System Draining and Filling.
  7. Inspect for leaks.