GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2000 🢒 GMC K Pickup - 4WD 🢒 HVAC 🢒 Heating, Ventilation and Air Conditioning 🢒 Blower Motor Resistor Replacement

Removal Procedure
  1. Remove the instrument panel. Refer to Instrument Panel Compartment Replacement in Instrument Panel, Gauges and Console.
  2. Disconnect the electrical connector from the blower motor resister (2).

    3. Object Number: 257990 Size: SH
  3. Remove the screws (1) from the blower motor resistor (2).
  4. Remove the blower motor resistor (2).

Installation Procedure

    Object Number: 257990 Size: SH
  1. Install the blower motor resistor (2).

    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 (1) to the blower motor resistor (2).

    3. Tighten
    Tighten the screws to 1.4 N·m (12 lb in).

  3. Connect the electrical connector to the blower motor resistor (2).
  4. Install the instrument panel. Refer to Instrument Panel Compartment Replacement in Instrument Panel, Gauges and Console.