No First, Second, Third, Fourth, Sixth, Seventh, Eighth, Tenth, or Reverse Gear

Automatic Transmission - 10L80 MHS MQC | Diagnostic Information and Procedures | Document ID: 4578450 No First, Second, Third, Fourth, Sixth, Seventh, Eighth, Tenth, or Reverse Gear

Checks	Causes
1-3-5-6-7 Clutch Assembly (57)	Inspect for damaged or worn 1-2-3-4-6-7-8-10-Reverse clutch plates (544–545). Inspect for damaged 1-2-3-4-6-7-8-10-Reverse clutch piston (538), return spring (539), and piston dam (540). Inspect for damaged 1-2-3-4-6-7-8-10-Reverse clutch piston dam retaining ring (541). Inspect for cut, worn or damaged 1-2-3-4-6-7-8-10- Reverse clutch piston seals (536, 537). Inspect for improper selective 1-2-3-4-6-7-8-10- Reverse clutch backing plate retaining ring (547). Inspect for damaged 1-2-3-4-6-7-8-10-Reverse clutch backing plate (546). Inspect for worn splines on backing plate. Inspect for damaged 1-2-3-4-6-7-8-10-Reverse clutch apply plate (542). Inspect for worn splines on apply plate. Inspect for damaged triple clutch housing (520). Check the one way clutch for not holding (421).

Checks

Causes

1-3-5-6-7 Clutch Assembly (57)

Inspect for damaged or worn 1-2-3-4-6-7-8-10-Reverse clutch plates (544–545). Inspect for damaged 1-2-3-4-6-7-8-10-Reverse clutch piston (538), return spring (539), and piston dam (540). Inspect for damaged 1-2-3-4-6-7-8-10-Reverse clutch piston dam retaining ring (541). Inspect for cut, worn or damaged 1-2-3-4-6-7-8-10- Reverse clutch piston seals (536, 537). Inspect for improper selective 1-2-3-4-6-7-8-10- Reverse clutch backing plate retaining ring (547). Inspect for damaged 1-2-3-4-6-7-8-10-Reverse clutch backing plate (546). Inspect for worn splines on backing plate. Inspect for damaged 1-2-3-4-6-7-8-10-Reverse clutch apply plate (542). Inspect for worn splines on apply plate. Inspect for damaged triple clutch housing (520). Check the one way clutch for not holding (421).