GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 1998 🢒 GMC Suburban - 2WD 🢒 HVAC 🢒 HVAC Systems - Manual 🢒 Blower Motor and Fan 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. Remove the instrument panel compartment. Refer to Instrument Panel Compartment Replacement in Instrument Panel, Gauges and Console.
  3. Remove the front screw from the right door sill plate.
  4. Remove the right hinge pillar trim panel. Refer to Body Hinge Pillar Trim Panel Replacement in Interior Trim.
  5. Disconnect the electrical connectors to the powertrain control module (PCM), as necessary.

    6. On diesel engines only, remove the PCM and the mounting bracket.


    Object Number: 258006 Size: SH
  6. Disconnect the electrical connectors from the blower motor (5), as necessary.
  7. Remove the bolt from the right lower instrument panel support.
  8. Remove the blower motor cover.
  9. Remove the blower motor cooling tube.
  10. Remove the blower motor flange screws (4).
  11. Complete the following steps in order to remove the blower motor:
    12. • Carefully pull forward the blower motor in order to avoid distorting the blower fan.
    • Pry back the right side of the instrument panel, as necessary.
  12. Complete the following inspection steps:
    13. • Inspect the blower motor terminals for distortion.
    • Clean any corrosion from the terminals, or replace the blower motor as necessary.
    • Inspect the flange of the blower motor for any damage or distortion that may cause an air leak.
    • Repair the flange, as necessary.
    • Inspect the blower fan for any damage or distortion.

Installation Procedure

    Object Number: 258006 Size: SH
  1. Guide the blower motor (5) and the blower fan into position in order to install the blower motor

    2. Use care in order to avoid catching the blower fan on any protruding parts.

  2. Install the blower motor flange screws (4).
  3. Install the blower motor cooling tube.
  4. Install the blower motor cover.
  5. Install the bolt to the right lower instrument panel support.
  6. Connect the electrical connectors, as necessary.
  7. Install the mounting bracket and the engine control module (ECM).
  8. Connect the electrical connectors to the ECM, as necessary.
  9. Install the right hinge pillar trim panel. Refer to Body Hinge Pillar Trim Panel Replacement in Interior Trim.
  10. Install the front screw into the front door sill plate.
  11. Install the instrument panel compartment. Refer to Instrument Panel Compartment Replacement in Instrument Panel, Gauges and Console.
  12. Connect the negative battery cable.
  13. Test the circuit operation.