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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 >> Air Conditioning (A/C) Low Pressure Switch 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. Lightly coat the NEW O-ring seal with mineral base 525 viscosity refrigerant oil.
  2. Install the NEW O-ring seal to the switch.
    NOTE: Refer to FASTENER NOTICE .
  3. Install the A/C low pressure switch to the accumulator.

    Tighten 

    Tighten the switch to 6 N.m (53 lb in).

  4. Connect the electrical connector to the A/C low pressure switch.
  5. Leak test the fittings of the components using the J 39400-A. 
    Fig 1: Installing A/C Low Pressure Switch To Accumulator
    G01479026Courtesy of GENERAL MOTORS CORP.
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