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Harsh or Late Second and Sixth Shift

WARNING: This page is about a different car, the 2019 Buick Cascada, 2018 Buick Cascada, and 2017 Buick Cascada. However, it is still accessible from the selected car via links, so may be relevant.
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)
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