GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Tools Required

J 38185 Hose Clamp Pliers

  1. Drain the cooling system. Refer to Cooling System Draining and Filling
  2. Remove the AIR check valve.
  3. Disconnect the heater hoses from the heater inlet pipe (1) using the J 38185 .

  4. Object Number: 608980  Size: SH
  5. Remove the heater inlet pipe.

Installation Procedure


    Object Number: 608980  Size: SH
  1. Connect the heater hoses to the heater inlet pipe (1) using the J 38185 .
  2. Install the AIR check valve.
  3. Fill the cooling system. Refer to Cooling System Draining and Filling