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.DB● LIVE
HOMESERVICE MANUALSCHEVROLET2004EXPRESS 1500 RWD V6-4.3L VIN XREPAIR AND DIAGNOSISHEATING AND AIR CONDITIONINGCOMPRESSOR HVACSERVICE AND REPAIRCOMPRESSOR REPLACEMENT
2004 Chevrolet Express 1500 RWD V6-4.3L VIN X
Compressor Replacement
2004 Chevrolet Express 1500 RWD V6-4.3L VIN XSECTION Compressor Replacement
COMPRESSOR REPLACEMENT
TOOLS REQUIRED
J 39400-A Halogen Leak Detector
REMOVAL PROCEDURE
1. Remove the air cleaner assembly.
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.
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 compressor, balance the refrigerant oil. Refer to Compressor Oil Balancing.
INSTALLATION PROCEDURE
1. Install the compressor (1) to the vehicle.
NOTE: Refer to Fastener Notice in Service Precautions.
2. Install the compressor retaining bolts to the mounting bracket.
Tighten
Tighten the bolts to 50 N.m (37 lb ft).
3. Install the new sealing washers.
4. Install the compressor hose assembly.
5. Install the drive belt.
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.
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.
TOOLS REQUIRED
J 39400-A Halogen Leak Detector
REMOVAL PROCEDURE
1. Remove the air cleaner assembly.
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.
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 compressor, balance the refrigerant oil. Refer to Compressor Oil Balancing.
INSTALLATION PROCEDURE
1. Install the compressor (1) to the vehicle.
NOTE: Refer to Fastener Notice in Service Precautions.
2. Install the compressor retaining bolts to the mounting bracket.
Tighten
Tighten the bolts to 50 N.m (37 lb ft).
3. Install the new sealing washers.
4. Install the compressor hose assembly.
5. Install the drive belt.
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.
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.
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:
- • 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.