GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Important: The blower motor relay that is used on this vehicle is an integral part of the blower motor resistor and can not be serviced separately from the resistor.

  1. Remove the air cleaner. Refer to Air Cleaner Assembly Replacement in Engine Controls -- 4.3L.
  2. Remove the windshield washers and the coolant reservoir. Refer to Coolant Recovery Reservoir Replacement in Engine Cooling.

  3. Object Number: 280399  Size: SH
  4. Disconnect the electrical connectors.
  5. Remove the screws from the blower motor resistor assembly.
  6. Remove the blower motor resistor assembly (4).

Installation Procedure


    Object Number: 280399  Size: SH
  1. Install the blower motor resistor assembly (4).
  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.

  3. Install the screws to the blower motor resistor assembly.
  4. Tighten
    Tighten the screws to 2 N·m (18 lb in).

  5. Install the windshield washers and the coolant reservoir. Refer to Coolant Recovery Reservoir Replacement in Engine Cooling.
  6. Connect the electrical connectors.
  7. Install the air cleaner. Refer to Air Cleaner Assembly Replacement in Engine Controls -- 4.3L.