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Home >> GMC >> 2006 >> Sierra 1500 HD, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 15 (Automatic Transmission - 4L60-E/4L65-E/4L70-E - Service, Diagnosis & Troubleshooting) >> No Torque Converter Clutch (TCC) Release

No Torque Converter Clutch (TCC) Release

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No TCC Release

Checks Causes
TCC Solenoid Valve (Part of 66)
  • External ground
  • Clogged exhaust orifice
Converter (1) Internal damage
Valve Body Assembly (60) The converter clutch apply valve is stuck in the apply position
Oil Pump Assembly (4) The converter clutch valve is stuck
PCM/TCM External ground