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Home >> Cadillac >> 2018 >> Escalade Base, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 21 (Automatic Transmission - 8L90 (M5U) - Diagnostic Information And Procedures) >> Diagnostic Information And Procedures >> Harsh, Soft, Delayed Or Slipping Fourth, Fifth, Sixth, Seventh, Eighth, Or Reverse Shift

Harsh, Soft, Delayed Or Slipping Fourth, Fifth, Sixth, Seventh, Eighth, Or Reverse Shift

WARNING: This page is about a different car, the 2018 Chevrolet Suburban 3500 HD. However, it is still accessible from the selected car via links, so may be relevant.
Checks Causes
2-3-4-6-8 and 4-5-6-7-8 Reverse Clutch Assembly (60)
  • Inspect for damaged or worn 4-5-6-7-8 Reverse clutch plates (539 - 541).
  • Inspect for damaged 4-5-6-7-8 Reverse clutch piston (534), clutch housing (521), return spring (535), piston dam (537), and piston stop (532).
  • Inspect for damaged 4-5-6-7-8 Reverse clutch piston dam retaining ring (538).
  • Inspect for cut, worn or damaged 4-5-6-7-8 Reverse clutch piston seals (524, 533), piston stop O-ring seal (523) and dam seal (536).
  • Inspect for improper selective 4-5-6-7-8 Reverse clutch backing plate retaining ring (543).
  • Inspect for damaged 4-5-6-7-8 Reverse clutch backing plate (542). Inspect for worn splines on backing plate.