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 3-5-R clutch plates (402-404).
    • Inspect for damaged 3-5-R clutch piston (421), apply ring (405), and spring (420).
    • Inspect for cut, worn, or damaged 3-5-R clutch piston dam O-ring seal (418), inner seal (419), and outer seal (422).
    • Inspect for improper selective 3-5-R clutch backing plate retaining ring (400).
    • Inspect for damaged 3-5-R clutch backing plate (401). Inspect for worn splines on the backing plate.