No Second, Third, Fourth, Fifth, Seventh, Ninth, or Tenth Gear

Automatic Transmission - 10L80 MHS MQC | Diagnostic Information and Procedures | Document ID: 4578448 No Second, Third, Fourth, Fifth, Seventh, Ninth, or Tenth Gear

Checks	Causes
2–3–4–5–7–9–10 Clutch Assembly	Inspect for damaged or worn 2–3–4–5–7–9–10 clutch plates (507, 508). Inspect for damaged 2–3–4–5–7–9–10 clutch piston (515), return spring (514), piston dam (513). Inspect for damaged 2–3–4–5–7–9–10 clutch piston dam retaining ring (510). Inspect for cut, worn or damaged 2–3–4–5–7–9–10 clutch piston seal (512, 516, 517), and dam seals (511). Inspect for improper selective 2–3–4–5–7–9–10 clutch backing plate retaining ring (505). Inspect for damaged 2–3–4–5–7–9–10 clutch backing plate (506). Inspect for worn splines on backing plate. Inspect for damaged triple clutch housing (518). Check the one way clutch for not holding (421).

Checks

Causes

2–3–4–5–7–9–10 Clutch Assembly

Inspect for damaged or worn 2–3–4–5–7–9–10 clutch plates (507, 508). Inspect for damaged 2–3–4–5–7–9–10 clutch piston (515), return spring (514), piston dam (513). Inspect for damaged 2–3–4–5–7–9–10 clutch piston dam retaining ring (510). Inspect for cut, worn or damaged 2–3–4–5–7–9–10 clutch piston seal (512, 516, 517), and dam seals (511). Inspect for improper selective 2–3–4–5–7–9–10 clutch backing plate retaining ring (505). Inspect for damaged 2–3–4–5–7–9–10 clutch backing plate (506). Inspect for worn splines on backing plate. Inspect for damaged triple clutch housing (518). Check the one way clutch for not holding (421).