Impala V8-5.3L (2008)
Expansion Valve: Service and Repair
Thermal Expansion Valve Replacement
Tools Required
J 39400-A Halogen Leak Detector
Removal Procedure
1. Recover the refrigerant from the A/C system. Refer to Refrigerant Recovery and Recharging.
2. Remove the evaporator tube to thermal expansion valve (TXV) nut (1).
3. Disconnect the evaporator outlet and inlet tube from the TXV.
4. Remove and discard the sealing washers.
Important: Cap or tape the open evaporator inlet and outlet tubes immediately to prevent contamination of the refrigerant system.
5. Cap off the evaporator inlet and outlet tube.
6. Remove the TXV to evaporator bolts.
7. Remove the TXV from the evaporator core.
8. Remove and discard the sealing washers.
Installation Procedure
1. Install the new sealing washers onto the evaporator core.