GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2009 🢒 TopKick C-Series (Conventional) C4/C5 🢒 HVAC 🢒 Heating, Ventilation, and Air Conditioning 🢒 Air Temperature Door Replacement

Removal Procedure
  1. Remove the heater assembly. Refer to Heater Assembly Replacement.
  2. Disconnect the air temperature actuator electrical connector.

    3. Object Number: 691844 Size: SH
  3. Remove the air temperature actuator retaining screws.
  4. Remove the air temperature actuator (1) from the heater assembly (2).

    5. Object Number: 691848 Size: SH
  5. Remove the air temperature door (1) from the heater assembly.

Installation Procedure

    Object Number: 691848 Size: SH
  1. Install the air temperature door (1) to the heater assembly.

    2. Object Number: 691844 Size: SH
  2. Install the air temperature actuator (1) to the heater assembly (2).

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

  3. Install the air temperature actuator retaining screws.

    4. Tighten
    Tighten screws to 1.9  N·m (17 lb in).

  4. Connect the air temperature actuator electrical connector.
  5. Install the heater assembly. Refer to Heater Assembly Replacement.