GM Service Manual Online
For 1990-2009 cars only

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