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Home >> Pontiac >> 2004 >> Aztek Base, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 152 (HVAC Systems - General Servicing) >> Repair Instructions >> Compressor Replacement (LM4) >> Removal Procedure

Removal Procedure

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2004 Oldsmobile Bravada, 2004 GMC Envoy XUV, 2004 GMC Envoy XL, 2004 GMC Envoy, and 2004 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
  1. Recover the refrigerant. Refer to Refrigerant Recovery and Recharging .
  2. Remove the washer solvent container. Refer to Washer Solvent Container Replacement (Envoy, TrailBlazer) or Washer Solvent Container Replacement (Rainier) in Wipers/Washer System.
  3. Remove the air cleaner resonator outlet duct. Refer to Air Cleaner Resonator Outlet Duct Replacement in Engine Controls.
  4. Remove the cooling fan and shroud. Refer to Cooling Fan and Shroud Replacement in Engine Cooling.
  5. Release the tension on the air conditioning drive belt.
  6. Reposition the air conditioning drive belt from the compressor pulley.
  7. Remove the compressor hose assembly nut from the compressor.
  8. Remove the compressor hose assembly from the compressor.
    9. Fig 1: A/C Compressor
    GM871561Courtesy of GENERAL MOTORS CORP.
  9. Remove the upper A/C compressor mounting bracket bolts.
  10. Remove the lower coolant hose. Refer to Radiator Hose Replacement - Inlet (LM4) or Radiator Hose Replacement - Inlet (LL8) in Engine Cooling.
  11. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  12. Disconnect the electrical connection from the compressor.
  13. Turn the right tire to gain access to the remaining compressor mounting bolts.
  14. Remove the lower A/C compressor mounting bracket bolts (3).
  15. Lower the vehicle.
  16. Reposition the compressor and mounting bracket to access the remaining compressor to bracket bolts.
  17. Remove the upper A/C compressor mounting bolts (4).
  18. Remove the A/C compressor.
  19. Remove the A/C compressor bracket.
  20. If replacing the A/C compressor. Refer to Compressor Oil Balancing .
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