GM Service Manual Online
For 1990-2009 cars
Makes 🢒 Chevrolet 🢒 2004 🢒 C-Series Medium Duty Truck C6/7/8 - Mexico 🢒 HVAC 🢒 HVAC Systems - Manual 🢒 Blower Motor Switch Replacement

Removal Procedure
  1. Remove the IP bezel assembly screws.
  2. Remove the IP bezel assembly.
  3. Remove the radio. Refer to Radio Replacement in Entertainment.

    4. Object Number: 729765 Size: SH
  4. Remove the HVAC control assembly screws.
  5. Remove the HVAC control assembly (2).

    6. Object Number: 728448 Size: SH
  6. Disconnect the electrical connector (4) from the HVAC control assembly (1).

    7. Object Number: 733857 Size: SH
  7. Remove the blower motor control knob (5) from the HVAC control assembly (1).
  8. Remove the blower motor switch (2) from the HVAC control plate (3).

Installation Procedure

    Object Number: 733857 Size: SH
  1. Install the blower motor switch (2) to the HVAC control plate (3).
  2. Install the blower motor control knob (5) to the HVAC control assembly (1).

    3. Object Number: 728448 Size: SH
  3. Connect the electrical connection (4) to the HVAC control assembly (1).

    4. Object Number: 729765 Size: SH
  4. Install the HVAC control assembly (2).

    5. 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.

  5. Install the HVAC control assembly screws.

    6. Tighten
    Tighten the screws to 2 N·m (18 lb in).

  6. Install the IP bezel assembly.
  7. Install the IP bezel assembly screws.

    8. Tighten
    Tighten the screws to 2 N·m (18 lb in).