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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 153 (Automatic Transmission - 4L60-E/4L65-E/4L70-E - Service, Diagnosis & Troubleshooting) >> No Torque Converter Clutch Release

No Torque Converter Clutch Release

WARNING: This page is about a different car, the 2007 GMC Yukon XL, 2007 GMC Yukon, 2007 Chevrolet Tahoe, 2007 Chevrolet Suburban, and 2007 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
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