Air Conditioning Compressor Replacement

2007 GMC Sierra Classic 1500 2WD V6-4.3LSECTION Air Conditioning Compressor Replacement


Compressor Replacement (LU3)

Tools Required

J 39400-A Halogen Leak Detector

Removal Procedure




1. Recover the refrigerant. Refer to Refrigerant Recovery and Recharging. Refrigerant Recovery and Recharging
2. Install a ratchet into the belt tensioner adapter opening.
3. Rotate the belt tensioner counterclockwise in order to relieve the tension on the belt.
4. Remove the belt from the A/C compressor.
5. Slowly release the tension on the belt tensioner.




6. Remove the discharge and suction hose bolt from the A/C compressor.
7. Remove the discharge and suction hose from the A/C compressor.
8. Discard the sealing washers. Cap all of the openings.
9. Disconnect the electrical connections.




10. Remove the A/C compressor mounting bolts.
11. If replacing the A/C compressor. Refer to Compressor Oil Balancing. Service and Repair

Installation Procedure




1. Remove the caps or tape from the hose and line ends.
2. Install the A/C compressor.

Notice: Refer to Fastener Notice.

3. Install the A/C compressor mounting bolts.

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

4. Connect the electrical connection.




5. Install the A/C discharge and suction hose to the compressor using new sealing washers.
6. Install the A/C discharge and suction hose bolt to the A/C compressor.

Tighten the bolt to 16 N.m (12 lb ft).

7. Install the drive belt.
8. Evacuate and recharge the A/C system. Refer to Refrigerant Recovery and Recharging. Refrigerant Recovery and Recharging
9. Leak test the fittings of the component using the J 39400-A.
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.