GM Service Manual Online
For 1990-2009 cars only
Makes šŸ¢’ Chevrolet šŸ¢’ 2000 šŸ¢’ Tracker - 2WD šŸ¢’ HVAC šŸ¢’ Heating, Ventilation and Air Conditioning šŸ¢’ Compressor Pressure Relief Valve Replacement

Removal Procedure

    Important: 

       ā€¢ Discharge and recover the A/C system refrigerant, and remove the compressor from the vehicle, before performing compressor repairs and procedures.
       ā€¢ During service of the compressor, prevent dirt and other foreign material from getting on the compressor parts and into the system. Clean tools and a clean work area are essential for proper service. Keep the compressor and the parts clean at all times.
       ā€¢ Clean all parts with a suitable solvent and air dry the parts prior to reassembly.
       ā€¢ Use only lint-free cloths to wipe the parts.
       ā€¢ Drain, measure and discard the remaining refrigerant oil when the compressor is removed from the vehicle. Add the same amount of new oil when the repairs are complete.

  1. If there is any sign of oil leakage, replace the pressure relief valve.
  2. Discharge and recover the refrigerant. Refer to Refrigerant Recovery and Recharging .
  3. Remove the pressure relief valve.
  4. Remove the pressure relief valve and the O-ring seal from the compressor.
  5. Discard the O-ring.

Installation Procedure
  1. Lubricate the new O-ring with mineral base 525 viscosity refrigerant oil.
  2. Install the O-ring to the pressure relief valve.

    3. Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  3. Install the pressure relief valve to the compressor.

    4. Tighten
    Tighten the pressure relief valve to 12- 18 NĀ·m (8.7-13 lb ft).

  4. Evacuate and recharge the air conditioning system. Refer to Refrigerant Recovery and Recharging .
  5. Operate the A/C system and test for refrigerant leaks. Refer to Leak Testing .