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 MANUALSCHEVROLET2007EXPRESS 2500 V8-6.0LREPAIR AND DIAGNOSISHEATING AND AIR CONDITIONINGEXPANSION VALVESERVICE AND REPAIR
2007 Chevrolet Express 2500 V8-6.0L
Expansion Valve: Service and Repair
2007 Chevrolet Express 2500 V8-6.0LSECTION Service and Repair
Auxiliary Air Conditioning Evaporator Thermal Expansion Valve Replacement
Removal Procedure
1. Remove the evaporator core.
2. Gently remove the sealer packed around the thermal expansion valve (TXV).
Important: Note the mounting location and the orientation of the tube on the core.
3. Remove the clip retaining the capillary tube to the evaporator core.
4. Disconnect the evaporator tube connections from the TXV.
5. Remove the TXV from the core.
Installation Procedure
1. Install the TXV to the core.
Notice: Refer to Fastener Notice.
2. Connect the evaporator tube connections to the TXV.
Tighten the tube connections to 28 N.m (21 lb ft).
Important: Install the clip and the tube in the location and the orientation as noted during the disassembly.
3. Install the clip in order to retain the capillary tube to the evaporator core.
4. Pack sealer around the TXV in the manner found during the disassembly.
5. Install the evaporator core.
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.