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Home >> Buick >> 2015 >> Regal GS, AWD >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission - 6T70 - Diagnostic Information And Procedures >> Diagnostic Information and Procedures >> Harsh or Late Third, Fifth, and Reverse Shift

Harsh or Late Third, Fifth, and Reverse Shift

Checks Causes
3-5-reverse Clutch Assembly
  • Inspect for improper surface finish on 3-5-reverse Clutch Plates (423-426), Backing Plate (426)
  • Inspect for plugged or restricted oil passages and air bleed of the 3-5-rev/4-5-6 Housing (422)
  • Inspect for damaged, worn or leaking 3-5-reverse Clutch Piston Seals (419-421)
  • Inspect for warped 3-5-rev/4-5-6 Clutch Housing (422)
  • Inspect for fatigued 3-5-reverse Clutch Waved Plate (423)