GM Service Manual Online
For 1990-2009 cars only

Torque Converter Clutch Intermittent - OK Cold/Slips Hot for Pontiac GTO 2004

Intermittent TCC OK Cold/Slips Hot

Checks

Causes

PWM Solenoid

Leaks

Regulator Apply Valve

Sticking valve

Converter Clutch Shift Valve

Sticking valve