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. Caution: Refer to Fastener Caution in the Preface section.

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

  4. 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.