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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1602 (Heating, Ventilation And Air Conditioning) >> Repair Instructions >> Heater Door Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Silverado, and 2003 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the heater door (6).
  2. Install the heater door cam assembly (5).
  3. Install the mode actuator cam assembly (4).
  4. Install the mode actuator (3).
  5. Install the heater/vent module halves.
    NOTE: Refer to FASTENER NOTICE .
  6. Install the heater/vent module screws.

    Tighten 

    Tighten the screws to 1.6 N.m (14 lb in).

  7. Install the heater/vent module. Refer to Heater/Vent Module Replacement .
Fig 1: Install Mode Actuator, Actuator Cam Assembly, Heater Door Cam Assembly & Heater Door
G01479185Courtesy of GENERAL MOTORS CORP.
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