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.
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HOMESERVICE MANUALSCHEVROLET2009SILVERADO 2500 2WD V8-6.6L DSL TURBOREPAIR AND DIAGNOSISHEATING AND AIR CONDITIONINGCOMPRESSOR HVACSERVICE AND REPAIRAIR CONDITIONING COMPRESSOR REPLACEMENT
2009 Chevrolet Silverado 2500 2WD V8-6.6L DSL Turbo
Air Conditioning Compressor Replacement
2009 Chevrolet Silverado 2500 2WD V8-6.6L DSL TurboSECTION Air Conditioning Compressor Replacement
Air Conditioning Compressor Replacement (LLY/LMM)
Special Tools
J 39400-A Halogen Leak Detector
Removal Procedure
1. Recover the refrigerant. Refer to Refrigerant Recovery and Recharging (Non-HP2) (Refrigerant Recovery and Recharging)Refrigerant Recovery and Recharging (HP2) (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 hose bolt (2) from the A/C compressor (3).
7. Remove the discharge hose (1) from the A/C compressor (3).
8. Remove the suction hose bolt (2) from the A/C compressor (3).
9. Remove the suction hose (1) from the A/C compressor (3).
10. Discard the sealing washers. Cap all of the openings.
11. Disconnect the electrical connections.
12. Remove the A/C compressor mounting bolts.
13. If replacing the A/C compressor. Refer to Air Conditioning Compressor Oil Balancing.
Installation Procedure
1. Remove the caps or tape from the hose and line ends.
2. Install the A/C compressor.
Caution: Refer to Fastener Caution (Fastener Caution) .
3. Install the A/C compressor mounting bolts.
Tighten the bolts to 50 Nm (37 lb ft).
4. Connect the electrical connection.
5. Install the A/C discharge hose (1) to the compressor (3) using new sealing washers.
6. Install the A/C discharge hose bolt (2) to the A/C compressor (3).
Tighten the bolt to 16 Nm (12 lb ft).
7. Install the A/C suction hose (1) to the compressor (3) using new sealing washers.
8. Install the A/C suction hose bolt (2) to the A/C compressor (3).
Tighten the bolt to 16 Nm (12 lb ft).
9. Install the drive belt. Refer to Drive Belt Replacement (Service and Repair) .
10. Evacuate and recharge the A/C system. Refer to Refrigerant Recovery and Recharging (Non-HP2) (Refrigerant Recovery and Recharging)Refrigerant Recovery and Recharging (HP2) (Refrigerant Recovery and Recharging) .
11. 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:
- • 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.