GM Service Manual Online
For 1990-2009 cars only

Checks

Causes

Input Carrier Assemlby (570)

Inspect for worn or stripped Output Internal Gear Splines

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

    • Inspect for damaged or fatigued 1-2-3-4 Clutch Wave Plate (557) and Low and Reverse Clutch Wave Plate (547)
    • Inspect for stripped or sheared splines on 1-2-3-4 Clutch Plate (546)
    • Inspect for improperly positioned or plugged Low Reverse Piston (550) air bleed
    • Inspect for correct fluid level

Low and Reverse Clutch Assembly (OWC) (543

Inspect for stripped or sheared internal and external splines on Low and Reverse Clutch Assembly (543)