Tahoe 2WD V8-4.8L VIN V (2004)
Expansion Valve: Service and Repair
THERMAL EXPANSION VALVE REPLACEMENT - AUXILIARY
REMOVAL PROCEDURE
1. Remove the evaporator core.
2. Carefully remove the sealer packed around the Thermal Expansion Valve (TXV). Reuse the sealer on the replacement TXV.
3. Remove the clip retaining the capillary tube to the evaporator core.
IMPORTANT: Note the mounting location and the orientation of the tube on the core.
4. Disconnect the evaporator tube connections from the TXV.
5. Remove the TXV from the tubes.
INSTALLATION PROCEDURE
1. Install the TXV to the tubes.
NOTE: Refer to Fastener Notice in Service Precautions.
2. Connect the evaporator tube connections from the TXV.
Tighten the tube connections to 28 N.m (21 lb ft).
3. Install the clip in order to retain the capillary tube to the evaporator core.
IMPORTANT: Install the clip and the tube in the location and the orientation as noted during the disassembly.
4. Pack sealer around the TXV in the manner found during the disassembly.
5. Install the evaporator core.
