GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 244231  Size: SH
  1. Drain the engine cooling system. Refer to Cooling System Draining and Filling .
  2. Remove the clamps and the inlet and outlet hoses (2, 3) from the heater core.

  3. Object Number: 235545  Size: SH
  4. Remove the clamps and the inlet and outlet hoses (1, 3) from the engine cylinder head.

Installation Procedure


    Object Number: 244231  Size: SH
  1. Install the inlet and outlet hoses (2, 3) to the heater core. Secure with the clamps.

  2. Object Number: 235545  Size: SH
  3. Install the inlet and outlet hoses (1, 3) to the engine cylinder head. Secure with the clamps.
  4. Refill the engine cooling system. Refer to Cooling System Draining and Filling .