GM Service Manual Online
For 1990-2009 cars only

Checks

Causes

4-5-6 (with Turbine Shaft) Clutch Assembly (56)

    • Inspect for damaged or worn clutch plates (433-435).
    • Inspect for damaged piston (439), piston dam (437), dam retaining ring (436), and clutch spring (438).
    • Inspect for improper selective 4-5-6 clutch backing plate retaining ring (431).
    • Inspect for cut, worn, or damaged turbine shaft fluid seal rings (442).