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Home >> GMC >> 2016 >> Terrain SL, Gas >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 5 (Automatic Transmission - 6T70 (M7U M7W) - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> Harsh or Late Second and Sixth Shift

Harsh or Late Second and Sixth Shift

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Checks Causes
2-6 Clutch Assembly
  • Inspect for worn or improper surface finish on the 2-6 Clutch Plates (446, 447) and Backing Plate (448)
  • Inspect for fatigued 2-6 Clutch Piston Cushion Spring (445)
Case Cover Assembly (403)
  • Inspect for damaged or broken 2-6 Clutch Piston (405) and piston seals damaged, worn or delaminating
  • Inspect for fatigued 2-6 Clutch Piston Return Spring (406)
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