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HOMESERVICE MANUALSCHEVROLET1999PICKUP K1500, 5.7 RREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 449 (HEATING, VENTILATION AND AIR CONDITIONING)REPAIR INSTRUCTIONSSUCTION HOSE 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. Install a new sealing washer onto the compressor end of the suction hose. Refer to SEALING WASHER REPLACEMENT  .
  2. Install the suction hose.
  3. Position the engine mount strut bracket flush with the upper radiator support.
  4. Install the right hand engine mount strut bracket brace bolts to the upper radiator support.

    Tighten 

    Tighten the bolts to 28N.m (21 lb ft).

  5. Tighten the right hand engine strut mount nuts, engine side.

    Tighten 

    Tighten the bolts to 48N.m (35 lb ft).

    Fig 1: Installing New Sealing Washer To Compressor End Of Suction Hose
    G01498836Courtesy of GENERAL MOTORS CORP.
  6. Raise the vehicle.
  7. Remove the cap or tape from the compressor suction port.
  8. Connect the suction hose to the compressor.
  9. Install the suction hose to compressor nut.

    Tighten 

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

    Fig 2: Installing Suction Hose To Compressor Nut
    G01498837Courtesy of GENERAL MOTORS CORP.
  10. Connect the engine harness electrical connector above the A/C compressor.
  11. Connect the A/C compressor electrical connector.
    Fig 3: Connecting A/C Compressor Electrical Connector
    G01498838Courtesy of GENERAL MOTORS CORP.
  12. Install a new sealing washer at the suction hose to evaporator outlet tube fitting. Refer to SEALING WASHER REPLACEMENT  .
  13. Remove the cap or tape from the evaporator outlet tube.
  14. Connect the suction hose to the evaporator outlet tube fitting.
  15. Install the suction hose to evaporator outlet tube bolt.

    Tighten 

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

    Fig 4: Installing Suction Hose To Evaporator Outlet Tube Bolt
    G01498839Courtesy of GENERAL MOTORS CORP.
  16. Install the air baffle.
  17. Install the air baffle bolts.

    Tighten 

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

  18. Lower the vehicle.
  19. Evacuate and recharge the A/C system. Refer to REFRIGERANT RECOVERY AND RECHARGING  .
  20. Leak test the fittings of the component using J 39400-A 
  21. Connect the negative battery cable.
    Fig 5: Installing Air Baffle Bolts
    G01498840Courtesy of GENERAL MOTORS CORP.
RENDER: 1.0x

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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.