GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 1836897  Size: SH
  1. Partially drain the cooling system. Refer to Cooling System Draining and Filling.
  2. Remove the heater pipe inlet hose (1) from the heater inlet pipe.

  3. Object Number: 1836898  Size: SH
  4. Remove the heater inlet pipe housing bolts (1).
  5. Remove the housing.
  6. Remove the heater inlet pipe housing seal. Discard seal.

Installation Procedure


    Object Number: 1836898  Size: SH
  1. Install a NEW heater inlet pipe housing seal.
  2. Notice: Refer to Fastener Notice in the Preface section.

  3. Install the heater inlet pipe housing bolts (1).
  4. Tighten
    Tighten the heater inlet housing bolts to 10 N·m (89 lb in).


    Object Number: 1836897  Size: SH
  5. Install the heater inlet hose (1) to the heater inlet pipe.
  6. Refill the cooling system. Refer to Cooling System Draining and Filling.