GM Service Manual Online
For 1990-2009 cars only

Checks

Causes

Low and Reverse Clutch Assembly (543)

    • Inspect for stripped or sheared internal or external splines on Low and Reverse Clutch Assembly (543)
    • Inspect for broken or disengaged retainer ring

Low and Reverse Clutch

    • Inspect for stripped or sheared splines on Low and Reverse Clutch Plates (545-547)
    • Inspect for damaged, deformed or improper surface finish on the Low and Reverse Clutch Plates (545-547)
    • Inspect for stripped or sheared splines on Low and Reverse Clutch Backing Plate (544)
    • Inspect for worn, damaged or debonding Low and Reverse Clutch Piston Seals (550)
    • Inspect for broken or fatigued Low and Reverse Clutch Piston Return Spring (549)

Low-Reverse and 1-2-3-4 Clutch Housing (551)

    • Inspect for disengaged or broken Low and Reverse Clutch Piston Spring Retainer (548)
    • Inspect for broken or deformed Low and Reverse Clutch Piston (550)
    • Inspect for damaged or improper surface finish in the piston bore