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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1588 (Automatic Transmission - 5AT - Service, Diagnosis & Troubleshooting) >> Torque Converter Clutch Not Disengaging

Torque Converter Clutch Not Disengaging

WARNING: This page is about a different car, the 2007 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
Torque Converter Clutch Not Disengaging

Condition Action
DEFINITION: TCC Lock-up clutch does not disengage
  • Torque converter clutch solenoid valve inoperative
  • TCC lock-up, pressure control solenoid inoperative
  • TCC lock-up clutch piston inoperative
  • TCC lock-up shift valve inoperative
  • TCC lock-up control valve inoperative
  • TCC lock-up timing valve inoperative
  • Inspect the MIL indicator for loose connectors.
  • Inspect the TCC lock-up pressure control solenoid body gasket for wear and damage.
  • If the TCC lock-up pressure control solenoid is stuck, inspect the CPC valves.