Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
SYS.OK|MANUAL.DBβ LIVE
HOMESERVICE MANUALSGMC2007SIERRA CLASSIC 1500 2WD V6-4.3LREPAIR AND DIAGNOSISHEATING AND AIR CONDITIONINGCOMPRESSOR HVACSERVICE AND REPAIRAIR CONDITIONING COMPRESSOR REPLACEMENT
2007 GMC Sierra Classic 1500 2WD V6-4.3L
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
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.
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.