GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2007 🢒 Sierra Classic - 4WD 🢒 HVAC 🢒 HVAC - Automatic 🢒 Blower Motor Control Processor Replacement

Removal Procedure

    Object Number: 476821 Size: SH
  1. If equipped, remove the sound insulator panel. Refer to Instrument Panel Insulator Replacement .
  2. Disconnect the electrical connector at the blower motor.

    3. Object Number: 735938 Size: SH
  3. Disconnect the electrical connector (4) from the blower motor control processor (2).
  4. Remove the blower motor control processor retaining screws (3) from the HVAC module (1).
  5. Remove the blower motor control processor (2) from the HVAC module (1).

Installation Procedure

    Object Number: 735938 Size: SH
  1. Install the blower motor control processor (2) to the HVAC module (1).

    2. 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 blower motor control processor retaining screws.

    3. Tighten
    Tighten the screws to 1.6 N·m (14 lb in).

  3. Connect the electrical connector (4) to the blower motor control processor (2).

    4. Object Number: 476821 Size: SH
  4. Connect the electrical connector at the blower motor.
  5. If equipped, install the sound insulator panel. Refer to Instrument Panel Insulator Replacement.