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HOMESERVICE MANUALSCHEVROLET1999PICKUP K1500, 5.7 RREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 449 (HEATING, VENTILATION AND AIR CONDITIONING)REPAIR INSTRUCTIONSCOMPRESSOR PRESSURE RELIEF VALVE REPLACEMENTINSTALLATION PROCEDURE
1999 Chevrolet Pickup K1500, 5.7 R

Installation Procedure

1999 Chevrolet Pickup K1500, 5.7 RSECTION Installation Procedure
WARNING: This page is about a different car, the 2003 Pontiac Aztek and 2003 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.
  1. Lubricate the high pressure relief valve O-ring. Refer to O-RING REPLACEMENT  .
  2. Install the high pressure relief valve to the A/C compressor.

    Tighten 

    Tighten the valve to 12 N.m (9 lb ft).

    Fig 1: Installing High Pressure Relief Valve
    G01498813Courtesy of GENERAL MOTORS CORP.
  3. Raise and support the vehicle.
  4. Remove the cap or tape from the A/C compressor suction port and suction hose end fitting.
  5. Install a new seal washer to the suction hose end fitting. Refer to SEALING WASHER REPLACEMENT  .
  6. Connect the suction hose to the A/C compressor.
  7. Install the suction hose to A/C compressor nut.

    Tighten 

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

    Fig 2: Installing Suction Hose A/C Compressor Nut
    G01498814Courtesy of GENERAL MOTORS CORP.
  8. Install the air baffle.
  9. Install the air baffle bolts.

    Tighten 

    Tighten the bolts to 20 N.m (15 lb ft).

  10. Lower the vehicle.
  11. Evacuate and recharge the A/C system. Refer to REFRIGERANT RECOVERY AND RECHARGING  .
  12. Leak test the fittings of the component using J 39400-A. 
    Fig 3: Installing Air Baffle
    G01498815Courtesy of GENERAL MOTORS CORP.
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.