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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1177 (HVAC Systems - Automatic) >> Repair Instructions >> Mode Actuator Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2003 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the I/P upper trim pad. Refer to TRIM PAD REPLACEMENT - INSTRUMENT PANEL (I/P) UPPER in Instrument Panel, Gages and Console.
  2. Remove the instrument panel cluster (IPC) to steering column bracket retaining screws.
  3. Reposition the IPC to better access the inside air temperature sensor duct.
    Fig 1: Removing Instrument Panel Cluster
    G01418971Courtesy of GENERAL MOTORS CORP.
  4. Remove the inside air temperature sensor aspirator duct.
    1. 4.1 Depress the duct retaining tab and remove the duct from the ignition switch housing bracket.
    2. 4.2 Use a twisting motion to release the duct from the duct muffler.
      Fig 2: Removing Inside Air Temperature Sensor Aspirator Duct
      G01418972Courtesy of GENERAL MOTORS CORP.
  5. Remove the driver knee bolster bracket. Refer to TRIM PANEL REPLACEMENT - KNEE BOLSTER in Instrument Panel, Gages and Console.
  6. Disconnect the ignition switch lock cylinder electrical connector from the retaining tab on the side of the ignition switch.
    Fig 3: Disconnecting Ignition Switch Lock Cylinder Electrical Connector From Retaining Tab
    G01418973Courtesy of GENERAL MOTORS CORP.
  7. Disconnect the lock cylinder electrical connector.
    Fig 4: Disconnecting Lock Cylinder Electrical Connector
    G01418974Courtesy of GENERAL MOTORS CORP.

    Important:  Take note of how the ignition switch lock cylinder wire is wrapped around the base of the ignition switch bezel.

  8. Remove the ignition switch bezel. Carefully pull to unsnap.
  9. Remove the hazard warning switch wiring harness from the ignition switch retainer.
    Fig 5: Removing Hazard Warning Switch Wiring Harness From Ignition Switch Retainer
    G01418975Courtesy of GENERAL MOTORS CORP.
  10. Remove the ignition switch retaining bolts.
    Fig 6: Removing Ignition Switch Retaining Bolts
    G01418976Courtesy of GENERAL MOTORS CORP.
  11. Reposition the ignition switch downward.
  12. Disconnect the vacuum harness connectors from the mode actuator.
  13. Cut and remove the adjustable plastic tie strap (1) from the base of the mode actuator.
    Fig 7: Disconnecting Vacuum Harness Connectors From Mode Actuator
    G01418977Courtesy of GENERAL MOTORS CORP.
  14. Lift to release the mode actuator retaining tab and just begin to slide the actuator toward the steering column bracket.
  15. Remove the air distribution case cover screws.
  16. Remove the air distribution case cover with the mode actuator attached.
  17. Remove the mode actuator from the mode door lever.
    Fig 8: Removing Mode Actuator From Mode Door Lever
    G01418978Courtesy of GENERAL MOTORS CORP.
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