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 MANUALSCHEVROLET2007AVEO L4-1.6LREPAIR AND DIAGNOSISHEATING AND AIR CONDITIONINGEXPANSION VALVESERVICE AND REPAIR
2007 Chevrolet Aveo L4-1.6L
Expansion Valve: Service and Repair
2007 Chevrolet Aveo L4-1.6LSECTION Service and Repair
Thermal Expansion Valve Replacement
Removal Procedure
Caution: Refer to Battery Disconnect Caution.
1. Disconnect the negative battery cable.
2. Recover the refrigerant. Refer to Refrigerant Recovery and Recharging.
3. Remove the liquid evaporator pipe connector block retaining nut at the cowl.
4. Remove the expansion valve connector block retaining bolts.
5. Remove the expansion valve.
6. Discard the O-rings.
Installation Procedure
1. Clean the O-ring surface areas of dirt or contamination.
2. Install new O-rings on the evaporator tubes.
3. Install a new expansion valve onto the evaporator tubes.
Notice: Refer to Fastener Notice.
4. Install the expansion valve retaining bolts.
Tighten the expansion valve retaining bolts to 12 N.m (106 lb in).
5. Install the liquid evaporator pipe connecting block retaining nut at the cowl.
Tighten the liquid evaporator pipe connecting block retaining nut to 15 N.m (11 lb in).
6. Connect the negative battery cable.
7. Evacuate and recharge the system. Refer to Refrigerant Recovery and Recharging.
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.