SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSCHEVROLET2003TRAILBLAZER 4.2 S, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1443 (HVAC SYSTEMS - GENERAL SERVICING)REPAIR INSTRUCTIONSCOMPRESSOR HOSE ASSEMBLY REPLACEMENT (LM4)REMOVAL PROCEDURE
2003 Chevrolet TrailBlazer 4.2 S, 4WD

Removal Procedure

2003 Chevrolet TrailBlazer 4.2 S, 4WDSECTION 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 bottle. Refer to Washer Solvent Container Replacement (Envoy, TrailBlazer) or Washer Solvent Container Replacement (Rainier) in Wipers/Washer Systems.
    3. Fig 1: Locating A/C Components
    GM871568Courtesy of GENERAL MOTORS CORP.
  3. Remove the retaining nut (1) from the compressor hose (4) at the accumulator (2).
  4. Remove the retaining nut from the compressor hose at the auxiliary HVAC piping connection (3).
  5. Remove the compressor hose from the accumulator (2).
  6. Remove the compressor hose from the auxiliary HVAC piping.
    7. Fig 2: Identifying Suction/Discharge Hoses To A/C Compressor
    GM628247Courtesy of GENERAL MOTORS CORP.
  7. Disconnect the pressure sensor electrical connector.
  8. Remove the compressor hose mounting nut (2) from the A/C compressor.
  9. Remove the heater hose bracket nut at the engine.
  10. Remove the bracket from the stud.
  11. Turn the compressor hose assembly to clear the heat shield.
  12. Lift and remove the compressor hose assembly from the compressor.
    13. Fig 3: View Of Discharge Hose At Condenser
    GM363062Courtesy of GENERAL MOTORS CORP.
  13. Remove the compressor hose assembly from the condenser.
  14. Remove the compressor hose assembly.
  15. Remove the compressor hose from the A/C compressor.
  16. Remove the compressor hose from the condenser.
  17. Disconnect the electrical connector from the A/C low pressure switch.
  18. Remove the nut from the compressor hose at the accumulator.
  19. Remove the compressor hose from the accumulator.
  20. Remove the compressor hose from the vehicle.
  21. Discard all of the used sealing washers. Cap the system openings.
RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

Shop Manual-Ready ToolsFree Quote CheckQuote Shield Pro

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.