Air Conditioning Compressor Replacement L30, L31, L35

Tools Required

J 39400-A Halogen Leak Detector

1. Remove the air cleaner assembly. Refer to the appropriate procedure:

•	Air Cleaner Assembly Replacement in Engine Controls - 4.3L

•	Air Cleaner Assembly Replacement in Engine Controls - 5.0L/5.7L

•	Air Cleaner Assembly Replacement in Engine Controls - 6.5L

•	Air Cleaner Assembly Replacement in Engine Controls - 8.1L

2. Recover the refrigerant from the A/C system. Refer to Refrigerant Recovery and Recharging .



3. Disconnect the clutch coil electrical connector (1) from the compressor.



4. Disconnect the A/C high pressure switch electrical connector (2) from the compressor.
5. Remove the drive belt. Refer to Drive Belt Replacement in Engine Mechanical - 4.3L or Drive Belt Replacement in Engine Mechanical - 5.0/5.7L.



6. Remove the compressor hose assembly.
7. Remove the mounting bolts (2) from the compressor.
8. Remove the compressor from the vehicle.
9. If replacing the A/C compressor, drain and measure as much of the oil from the removed compressor as possible.

9.1.	Drain the oil from both the suction and discharge ports of the removed A/C compressor into a clean container.

9.2.	Remove the A/C compressor crankcase oil drain plug and drain the crankcase oil into the same container.

9.3.	Measure and record the amount of oil that was drained from the removed A/C compressor.

This measurement will be used during installation of the replacement A/C compressor.

Important: The compressor is shipped without oil.




1. Add oil to the compressor. Refer to Refrigerant System Capacities , if replacing the compressor.
2. Install the compressor (1) to the vehicle.

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 compressor retaining bolts to the mounting bracket.

Tighten
Tighten the bolts to 50 N·m (37 lb ft).

4. Install the compressor hose assembly.
5. Install the drive belt. Refer to Drive Belt Replacement in Engine Mechanical - 4.3L or Drive Belt Replacement in Engine Mechanical - 5.0/5.7L.



6. Connect the clutch coil electrical connector (1) to the compressor.



7. Connect the A/C high pressure switch electrical connector (2) to the compressor.
8. Install the air cleaner assembly. Refer to the appropriate procedure:

•	Air Cleaner Assembly Replacement in Engine Controls - 4.3L

•	Air Cleaner Assembly Replacement in Engine Controls - 5.0L/5.7L

•	Air Cleaner Assembly Replacement in Engine Controls - 6.5L

•	Air Cleaner Assembly Replacement in Engine Controls - 8.1L

9. Evacuate and recharge the A/C system. Refer to Refrigerant Recovery and Recharging .
10. Leak test the fittings of the components using the J 39400-A .

Air Conditioning Compressor Replacement L18

Tools Required

J 39400-A Halogen Leak Detector

1. Remove the air cleaner assembly. Refer to Air Cleaner Assembly Replacement in Engine Controls - 8.1L.
2. Recover the refrigerant from the A/C system. Refer to Refrigerant Recovery and Recharging .



3. Disconnect the clutch coil electrical connector (1) from the compressor.



4. Disconnect the A/C high pressure switch electrical connector (2) from the compressor.
5. Remove the drive belt. Refer to Drive Belt Replacement in Engine Mechanical - 8.1L.



6. Remove the compressor hose assembly.
7. Remove the compressor mounting bolts.
8. Remove the compressor from the vehicle.
9. If replacing the A/C compressor, drain and measure as much of the oil from the removed compressor as possible.

9.1.	Drain the oil from both the suction and discharge ports of the removed A/C compressor into a clean container.

9.2.	Remove the A/C compressor crankcase oil drain plug and drain the crankcase oil into the same container.

9.3.	Measure and record the amount of oil that was drained from the removed A/C compressor.

This measurement will be used during installation of the replacement A/C compressor.

Important: The compressor is shipped without oil.




1. Add oil to the compressor. Refer to Refrigerant System Capacities , if replacing the compressor.
2. Install the compressor to the vehicle.

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 compressor retaining bolts to the mounting bracket.

Tighten
Tighten the bolts to 50 N·m (37 lb ft).

4. Install the compressor hose assembly.
5. Install the drive belt. Refer to Drive Belt Replacement in Engine Mechanical - 8.1L.



6. Connect the clutch coil electrical connector (1) to the compressor.



7. Connect the A/C high pressure switch electrical connector (2) to the compressor.
8. Install the air cleaner assembly. Refer to Air Cleaner Assembly Replacement in Engine Controls - 8.1L.
9. Evacuate and recharge the A/C system. Refer to Refrigerant Recovery and Recharging .
10. Leak test the fittings of the components using the J 39400-A .

Air Conditioning Compressor Replacement L65

Tools Required

J 39400-A Halogen Leak Detector

1. Remove the air cleaner assembly. Refer to Air Cleaner Assembly Replacement in Engine Controls - 6.5L(L65).
2. Recover the refrigerant from the A/C system. Refer to Refrigerant Recovery and Recharging .



3. Disconnect the clutch coil electrical connector (1) from the compressor.



4. Disconnect the A/C high pressure switch electrical connector (2) from the compressor.
5. Remove the drive belt. Refer to Drive Belt Replacement in Engine Mechanical.



6. Remove the compressor hose assembly.
7. Remove the mounting bolts (2) from the compressor (1).
8. Remove the compressor (1) from the vehicle.
9. If replacing the A/C compressor, drain and measure as much of the oil from the removed compressor as possible.

9.1.	Drain the oil from both the suction and discharge ports of the removed A/C compressor into a clean container.

9.2.	Remove the A/C compressor crankcase oil drain plug and drain the crankcase oil into the same container.

9.3.	Measure and record the amount of oil that was drained from the removed A/C compressor.

This measurement will be used during installation of the replacement A/C compressor.

Important: The compressor is shipped without oil.




1. Add oil to the A/C compressor. Refer to Refrigerant System Capacities , if replacing the compressor.
2. Install the compressor (1) to the vehicle.

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 compressor retaining bolts (2) to the mounting bracket (3).

Tighten
Tighten the bolts to 50 N·m (37 lb ft).

4. Install the compressor hose assembly.
5. Install the drive belt. Refer to Drive Belt Replacement in Engine Mechanical.



6. Connect the clutch coil electrical connector (1) to the compressor.



7. Connect the A/C high pressure switch electrical connector (2) to the compressor.
8. Install the air cleaner assembly. Refer to Air Cleaner Assembly Replacement in Engine Controls -- 6.5L(L65).
9. Evacuate and recharge the A/C system. Refer to Refrigerant Recovery and Recharging .
10. Leak test the fittings of the component using the J 39400-A .