GM Service Manual Online
For 1990-2009 cars only

Checks

Causes

1-2-3-4 and 3-5-R Clutch Assembly (51)

    • Inspect for damaged or worn 1-2-3-4 clutch plates (408-410).
    • Inspect for damaged 1-2-3-4 clutch piston (414), piston housing (417), spring (413), and dam assembly (412).
    • Inspect for damaged 1-2-3-4 clutch piston dam retaining ring (411).
    • Inspect for cut, worn, or damaged 1-2-3-4 clutch piston seal (416), inner seal (423), and housing seals (424 and 425).
    • Inspect for improper selective 1-2-3-4 clutch backing plate retaining ring (429).
    • Inspect for damaged 1-2-3-4 clutch backing plate (407). Inspect for worn splines on the backing plate.