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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1527 (HVAC Systems - Automatic) >> Repair Instructions >> Defroster Actuator Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2004 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: RH Side Window Defogger Lower Outlet Duct
    GM295305Courtesy of GENERAL MOTORS CORP.
  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. Disconnect the RH side window defogger lower outlet duct from the windshield defroster duct, then reposition the side window defogger duct forward.
  3. Disconnect the vacuum harness connectors from the defroster actuator.
  4. Rotate the defrost door lever fully rearward/counterclockwise, then carefully insert a flat bladed tool between the bottom of the defrost door lever and the protruding wall of the HVAC module case below the door lever in order to keep the door lever in place.
    5. Fig 2: Passenger SIR Bracket & Defroster Actuator
    GM295306Courtesy of GENERAL MOTORS CORP.
  5. Lift to release the defroster actuator retaining tab and begin to slide the actuator toward the passenger SIR bracket.
  6. Carefully rotate the actuator upward and forward until the actuator clears the passenger SIR bracket.
    7. Fig 3: Defrost Door Lever & Actuator Pushrod
    GM295308Courtesy of GENERAL MOTORS CORP.
  7. Disconnect the actuator pushrod from the defrost door lever and remove the actuator.
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