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

Removal Procedure
  1. Remove the air cleaner. Refer to Air Cleaner Assembly Replacement in Engine Controls.

    2. Object Number: 280272 Size: SH

    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.

  2. Disconnect the negative battery cable.
  3. Remove the electrical connector.
  4. Remove the coolant recovery and windshield washer fluid reservoir assembly. Refer to Coolant Recovery Reservoir Replacement in Engine Cooling.

    5. Object Number: 280271 Size: SH
  5. Remove the screws that retain the acoustic cover.

    6. The acoustic cover is located in the blower motor area.

  6. Cut the acoustic cover between the ribs.

    7. Important: Retain this portion of the acoustic cover for reassembly.

  7. Remove the cut piece of the acoustic cover from the blower motor.
  8. Remove the cooling tube from the motor.
  9. Remove the screws that retain the blower motor to the case.
  10. Remove the blower from the case.
  11. Ensure that the following components have not been damaged or distorted:
    12. • The flange of the blower motor
    • The blower fan
  12. Repair or replace any damaged or distorted components, as necessary.

Installation Procedure

    Object Number: 280271 Size: SH
  1. Install the blower motor to 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 blower motor to the case.

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

  3. Install the cooling tube to the motor.
  4. Install the screws that retain the acoustic cover to the case.

    5. Tighten
    Tighten the screws that retain the acoustic cover to the case to 2 N·m (18 lb in).

  5. Install the clips to the clip lands.

    6. The clips secure the motor and the case covers together.

  6. Install the coolant recovery and washer fluid reservoir assembly. Refer to Coolant Recovery Reservoir Replacement in Engine Cooling.

    7. Object Number: 280272 Size: SH
  7. Install the electrical connectors.

    8. 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.

  8. Connect the negative battery cable.
  9. Ensure that the circuit operates properly.
  10. Install the air cleaner. Refer to Air Cleaner Assembly Replacement in Engine Controls.