OEM 2005 Chevrolet Equinox A/C Expansion Valve

2005 Chevrolet Equinox A/C Expansion Valve Parts and Q&A

• Q: How to replace the A/C Expansion Valve of the first design on 2005 Chevrolet Equinox?

  A: The process for A/C Expansion Valve (TXV) replacement in the first design begins with leak testing through the use of the Halogen Leak Detector (J 39400-A). The first step involves refrigerant recovery then evaporator outlet hose nut detachment from the A/C Expansion Valve to prevent dirt from affecting the O-ring sealing areas. The work area and tools need complete cleaning with non-petroleum based solvents while using lint-free cloths. Place a protective cap on the A/C Expansion Valve to stop contamination before breaking the evaporator outlet hose free from the A/C Expansion Valve. Drop the liquid line nut from the A/C Expansion Valve and disconnect the liquid line before capping both components to stop contamination. Disconnect the refrigerant low temperature sensor from the engine harness before taking out the backing plate and A/C Expansion Valve by removing its bolts. The old O-rings from evaporator pipes should be discarded while protective caps keep the pipes clean. Before installing new O-rings on evaporator pipes always check that the seam areas are free of moisture and debris. Fit the A/C Expansion Valve between its backing plate while also attaching these components to the evaporator pipes and torque the A/C Expansion Valve bolts to 80 lb in (9 N.m). Use a new seal washer then screw the liquid line to the A/C Expansion Valve before tightening the nut to 16 N.m (12 lb ft). The installer should complete this step on the evaporator outlet hose by using a new seal washer before securing the nut to 16 N.m (12 lb ft). The last procedure involves connecting the refrigerant low temperature sensor back to the engine harness then evacuating and charging the A/C system before using the Halogen Leak Detector (J 39400-A) to check for leaks in the affected A/C joints.