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Home >> GMC >> 2018 >> Acadia Denali, FWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 12 (Automatic Transmission - 6T50 (M2D) - Diagnostic Information And Procedures) >> Diagnostic Information And Procedures >> Harsh Or Late Second And Sixth Shift

Harsh Or Late Second And Sixth Shift

WARNING: This page is about a different variant/trim than selected.
Checks Causes
2 - 6 Clutch Assembly
  • Inspect for worn or improper surface finish on the 2 - 6 Clutch Plates (540 - 542)
  • Inspect for fatigued 2 - 6 Clutch Piston Apply Plate (540)
  • Inspect for plugged, restricted or incorrect orientation of the 2 - 6 Clutch Piston (535) air bleed
Case Assembly (50)
  • Inspect for damaged or broken 2 - 6 Clutch Piston (535) and piston seals damaged, worn or delaminating
  • Inspect for fatigued 2 - 6 Clutch Piston Return Spring (536)