Harsh, Soft, Delayed or Slipping First, Third, Fifth, Sixth, Seventh, Eighth, or Ninth Shift

Automatic Transmission - 10L80 MHS MQC | Diagnostic Information and Procedures | Document ID: 4578451 Harsh, Soft, Delayed or Slipping First, Third, Fifth, Sixth, Seventh, Eighth, or Ninth Shift Harsh, Soft, Delayed or Slipping First, Third, Fifth, Sixth, Seventh, Eighth, or Ninth Shift

Checks	Causes
1-3-5-6-7-8-9 Clutch Assembly	Inspect for damaged or worn 1-3-5-6-7-8-9 clutch plates (556–557). Inspect for damaged 1-3-5-6-7-8-9 clutch piston (561), return spring (559), piston dam (563), and apply plate (573). Inspect for damaged 1-3-5-6-7-8-9 clutch piston dam retaining ring (565). Inspect for cut, worn or damaged 1-3-5-6-7-8-9 clutch piston seal (560), and dam seals (562, 564). Inspect for damaged or improper 1-3-5-6-7-8-9 clutch backing plate (555). Inspect for worn splines on backing plate. Inspect for rolled turbine shaft seals (569)

Checks

Causes

1-3-5-6-7-8-9 Clutch Assembly

Inspect for damaged or worn 1-3-5-6-7-8-9 clutch plates (556–557). Inspect for damaged 1-3-5-6-7-8-9 clutch piston (561), return spring (559), piston dam (563), and apply plate (573). Inspect for damaged 1-3-5-6-7-8-9 clutch piston dam retaining ring (565). Inspect for cut, worn or damaged 1-3-5-6-7-8-9 clutch piston seal (560), and dam seals (562, 564). Inspect for damaged or improper 1-3-5-6-7-8-9 clutch backing plate (555). Inspect for worn splines on backing plate. Inspect for rolled turbine shaft seals (569)