GM Service Manual Online
For 1990-2009 cars only

Checks

Cause

Torque Converter (1)

    â€¢ Out of balance
    â€¢ Internal failure
    â€¢ Not sealed in crankshaft pilot

Transmission/Engine

Misaligned or missing dowels

Case Extension (19)

Output shaft support bushing is worn.

Turbine Shaft (502)

Worn surface of the stator shaft bushing

Mainshaft (662)

Worn bushing

Output Shaft (671)

Worn bushing

Bearing (668)

Worn