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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1668 (HVAC Systems - Automatic) >> Repair Instructions >> Defroster Actuator Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2003 Buick Regal and 2003 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the right instrument panel insulator panel. Refer to CLOSEOUT/INSULATOR PANEL REPLACEMENT - RIGHT in Instrument Panel, Gages and Console.
  2. Remove the I/P compartment. Refer to COMPARTMENT REPLACEMENT - INSTRUMENT PANEL (I/P) in Instrument Panel, Gages, and Console.
  3. Disconnect the two vacuum lines from the defroster actuator (3).
    Fig 1: Removing Defroster Actuator Vacuum Lines
    G01569029Courtesy of GENERAL MOTORS CORP.
  4. Disconnect the orange vacuum line from the recirculation actuator and install a hand vacuum pump (2).
  5. Remove the defroster actuator from its attachment to the HVAC module case.
  6. Using the hand vacuum pump (2) open the recirculation actuator door to the full position.
  7. Rotate the defroster actuator to the right and up into the opening between the back of the dash and the opening into the HVAC module.
  8. Disconnect the defroster actuator from the defroster door arm.
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