GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 1998 🢒 Astro - 4WD 🢒 HVAC 🢒 Heating, Ventilation and Air Conditioning 🢒 Auxiliary Blower Motor Resistor Replacement

Removal Procedure

    Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.

  1. Disconnect the negative battery cable.

    2. Object Number: 280417 Size: SH
  2. Remove the left body side trim panel. Refer to Body Side Trim Panel Replacement - Left Side in Interior Trim.
  3. Remove the electrical connector.
  4. Remove the screws that retain the resistor to the case.
  5. Remove the blower motor resistor from the case.

Installation Procedure

    Object Number: 280417 Size: SH
  1. Install the blower motor resistor into the case.

    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 screws that retain the resistor to the case.

    3. Tighten
    Tighten the screws that retain the resistor to the case to 2 N·m (18 lb in).

  3. Install the electrical connector.
  4. Install the left body side rear trim panel. Refer to Body Side Trim Panel Replacement - Left Side in Interior Trim.

    5. Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.

  5. Connect the negative battery cable.