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Home >> Cadillac >> 2019 >> ATS V >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission - 8L45 (M5N M5T) Or 8L90 (M5U) - Diagnostic Information And Procedures >> Diagnostic Information and Procedures >> Harsh, Soft, Delayed or Slipping First, Second, Third, Fourth, Fifth, or Reverse Shift

Harsh, Soft, Delayed or Slipping First, Second, Third, Fourth, Fifth, or Reverse Shift

Checks Causes
1-2-3-4-5 Reverse Clutch Assembly
  • Inspect for damaged or worn 1-2-3-4-5 Reverse clutch plates (592 - 595).
  • Inspect for damaged 1-2-3-4-5 Reverse clutch piston (406), clutch piston dam (402), and return spring (405).
  • Inspect for cut, worn or damaged 1-2-3-4-5 Reverse clutch piston seals (403, 408), piston O-ring seal (404), dam seal (401), and dam inner O-ring seal (409).
  • Inspect for damaged 1-2-3-4-5 Reverse clutch piston dam retaining ring (400).
  • Inspect for damaged or improper selective 1-2-3-4-5 Reverse clutch backing plate retaining ring (590).
  • Inspect for damaged 1-2-3-4-5 Reverse clutch backing plate (591). Inspect for worn splines on backing plate.