GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2000 🢒 Yukon - 2WD 🢒 HVAC 🢒 HVAC Systems - Automatic 🢒 Mode Valve Actuator Replacement

Removal Procedure

    Object Number: 363014 Size: SH
  1. Remove the floor air outlet duct extension (1) from the floor duct (2).

    2. Object Number: 372310 Size: SH
  2. Disconnect the electrical connection at the mode actuator (10).

    3. Object Number: 375683 Size: SH
  3. Remove the mode actuator mounting screws from the HVAC module.
  4. Remove the mode actuator as an assembly with the actuator cam.

Installation Procedure

    Object Number: 375683 Size: SH
  1. Install the mode actuator as an assembly with the actuator cam.
    2. • Line up the heater/defroster lever with the mode actuator cam slot.
    • Line up the A/C lever with the mode actuator cam.

    Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  2. Install the mode actuator mounting screw to the HVAC module.

    3. Tighten
    Tighten the mode actuator mounting screw to 1.6 N·m (14 lb in).


    Object Number: 372310 Size: SH
  3. Connect the electrical connection at the mode actuator (10).

    4. Object Number: 363014 Size: SH
  4. Install the floor air outlet duct extension (1) to the floor air duct (2).