Air Conditioning Compressor Hose Replacement

Air Conditioning Compressor Hose Replacement (LH6, LS2) (5.3L, 6.0L)

Special Tools

J 39400-A Halogen Leak Detector

Removal Procedure

1. Recover the refrigerant. Refer to Refrigerant Recovery and Recharging (Refrigerant Recovery and Recharging).
2. Remove the washer bottle. Refer to Windshield Washer Solvent Container Replacement (Envoy, TrailBlazer) (Service and Repair).




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. Disconnect the pressure sensor electrical connector.
8. Remove the compressor hose mounting nut 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. 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.

Installation Procedure

1. Install the compressor hose assembly.




2. Install the compressor hose to the condenser using new sealing washers. Refer to Sealing Washer Replacement (Sealing Washer Replacement).

Caution: Refer to Fastener Caution (Fastener Caution).

3. Install the compressor hose nut to the condenser.

Tighten the nut to 16 Nm (12 lb ft).

4. Connect the electrical connector to the A/C low pressure switch.




5. Install the compressor hose to the accumulator using new sealing washers. Refer to Sealing Washer Replacement (Sealing Washer Replacement).
6. Install the nut (1) to the accumulator.

Tighten the nut to 16 Nm (12 lb ft).




7. Install the compressor hose to the A/C compressor using new sealing washers. Refer to Sealing Washer Replacement (Sealing Washer Replacement).
8. Install the compressor hose nut.

Tighten the nut to 16 Nm (12 lb ft).

9. Install the washer bottle. Refer to Windshield Washer Solvent Container Replacement (Envoy, TrailBlazer) (Service and Repair).
10. Evacuate and recharge the A/C system. Refer to Refrigerant Recovery and Recharging (Refrigerant Recovery and Recharging).
11. Leak test the fittings of the component using J 39400-A .