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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1484 (HVAC Systems - Automatic) >> Repair Instructions >> Mode Valve Actuator Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2003 Oldsmobile Bravada, 2003 GMC Envoy XL, 2003 GMC Envoy, and 2003 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
    IMPORTANT: The new actuator is in Bi-Level mode. Place the door in the middle of the travel position before you install the actuator.
    Fig 1: Mode & Air Temperature Actuator
    GM1679189Courtesy of GENERAL MOTORS CORP.
  1. Install the mode actuator (3).
    2. NOTE: Refer to FASTENER NOTICE in Cautions and Notices.
  2. Install the screws to the mode actuator (3).

    Tighten:  Tighten the screws to 1.9 N.m (18 lb in).

  3. Install the left hand floor duct. Refer to AIR OUTLET DUCT REPLACEMENT - LEFT SIDE .
  4. Install the left side sound insulator screws.
  5. Recalibrate the mode actuator. Refer to Re-Calibrating Actuators (Primary)  or Re-Calibrating Actuators (Auxiliary HVAC) .
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