GM Service Manual Online
For 1990-2009 cars only

Loss of Power

Checks

Cause

Transmission

    • Low oil
    • Not starting in first gear

TCC System

TCC is stuck On, or TCC is dragging

Torque Converter (1)

Debris is in the converter

Stator Shaft (235)

Shaft is broken

Turbine Shaft (502)

The bushing is worn

Main Shaft (662)

The bushing is worn

Output Shaft (671)

The bushing is worn

Bearing (668)

The bearing is worn