GM Service Manual Online
For 1990-2009 cars only

Checks

Causes

1-3 Clutch Hub Assembly (412)

    • Inspect hub assembly, and apply plate for wear or damage.
    • Inspect for damaged or worn 1-3 clutch backing plate.

4th Clutch Hub Assembly (402)

    • Inspect hub assembly, and apply plate for wear or damage.
    • Inspect for damaged or worn 4th clutch backing plate.