GM Service Manual Online
For 1990-2009 cars only

Checks

Causes

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

Inspect for plugged or restricted Low-Reverse/1-2-3-4 Clutch Piston Housing (551) air bleed

Low and Reverse Clutch

    • Inspect for improper surface finish on Low and Reverse Clutch Plates (545-547)
    • Inspect for broken or fatigued Low and Reverse Clutch Apply Plate (547)
    • Inspect for damaged or broken Low and Reverse Clutch Piston (550) and piston seals damaged, worn or leaking
    • Inspect for fatigued or binding Low and Reverse Clutch Piston Return Spring (549)