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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 362 (Automatic Transmission - 6L80/6L90 - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> No Torque Converter Clutch Apply

No Torque Converter Clutch Apply

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No Torque Converter Clutch Apply

Checks Causes
Torque Converter Assembly (1) Diagnose torque converter for possible internal damage. Refer to Torque Converter Diagnosis .
Fluid Pump Cover Assembly (219)
  • Inspect for worn, damaged, or sticking converter feed limit valve (220) and spring (221).
  • Inspect for worn, damaged, or sticking TCC control valve (227) and spring (226).
  • Inspect for damaged stator shaft.
Control Valve Lower Body Assembly (307) Inspect for worn, damaged, or sticking torque converter clutch (TCC) regulator apply valve (355). Refer to Control Solenoid Valve and Transmission Control Module Assembly Inspection .
4-5-6 (with Turbine Shaft) Clutch Assembly (56)
  • Inspect for damaged turbine shaft.
  • Inspect for damaged turbine shaft O-ring seal.
Torque Converter (with Fluid Pump) Housing Assembly (2) Inspect for leaking or damaged torque converter fluid seal assembly (201), torque converter bushing (206), turbine shaft o-ring seal (443) and torque converter (with fluid pump) housing assembly (2).
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