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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1709 (HVAC Systems - Troubleshooting) >> Repair Instructions >> Accumulator Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2002 Oldsmobile Bravada, 2002 GMC Envoy XL, 2002 GMC Envoy, and 2002 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
    IMPORTANT: If replacing the accumulator, add the refrigerant oil to the accumulator. Refer to Refrigerant System Capacities  for the capacity information.
  1. Install the accumulator to the vehicle.
  2. Install the accumulator into the accumulator clamp.
    3. NOTE: Refer toFASTENER NOTICE in Cautions and Notices.
  3. Install the accumulator clamp nut.

    Tighten:  Tighten the nut to 10 N.m (88 lb in).

  4. Install the A/C low pressure switch.

    Tighten:  Tighten the A/C low pressure switch to 5 N.m (44 lb in).

    5. Fig 1: HVAC Accumulator
    GM735909Courtesy of GENERAL MOTORS CORP.
  5. Install new O-ring seals. Refer to O-Ring Replacement .
  6. Install the accumulator to the evaporator.
  7. Install the accumulator retaining nut.

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

  8. Connect the compressor suction hose to the accumulator (4).
  9. Install the suction hose nut.

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

  10. Connect the electrical connector to the A/C low pressure switch.
  11. Evacuate and recharge the A/C system. Refer to Refrigerant Recovery and Recharging .
  12. Leak test the fitting of the component using the J 39400-A  Halogen Leak Detector. See Special Tools and Equipment .
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