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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 >> Compressor Replacement (LR4, LM7, and LQ4) >> 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. Add the proper amount of PAG oil to the compressor crankcase. Refer to REFRIGERANT SYSTEM CAPACITIES  . 
  2. Install the A/C compressor (2) to the bracket (1) through the fender well. Insert the mounting bolt (3) into the lower right mounting boss before installing the A/C compressor.
  3. Install the A/C compressor to the bracket. Insert the mounting bolt into the lower right mount before installing the A/C compressor.
    NOTE: Refer to FASTENER NOTICE .
  4. Install the A/C compressor mounting bolts.

    Tighten 

    Tighten the bolts to 50 N.m (37 lb ft).

  5. Connect the electrical connector to the A/C compressor.
  6. Install the A/C discharge hose to the compressor using new sealing washers. Refer to Sealing Washer Replacement .
    7. Fig 1: A/C Compressor, Bracket & Mounting Bolt
    G01478976Courtesy of GENERAL MOTORS CORP.
  7. Install the A/C discharge hose bolt to the A/C compressor.

    Tighten 

    Tighten the bolt to 16 N.m (12 lb ft).

  8. Install the A/C suction hose to the compressor using new sealing washers. Refer to Sealing Washer Replacement .
  9. Install the A/C suction hose bolt to the A/C compressor.

    Tighten 

    Tighten the bolt to 16 N.m (12 lb ft).

  10. Install the wheel house panel to the vehicle. Refer to WHEELHOUSE PANEL REPLACEMENT .
  11. Install the right front tire and wheel assembly. Refer to TIRE AND WHEEL REMOVAL AND INSTALLATION .
  12. Install the A/C drive belt. Refer to DRIVE BELT REPLACEMENT-AIR CONDITIONING .
  13. Evacuate and recharge the A/C system. Refer to Refrigerant Recovery and Recharging .
  14. Leak test the fittings of the component using the J 39400-A. 
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