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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 First, Second, Third, and Fourth Shift

Harsh or Late First, Second, Third, and Fourth Shift

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Checks Causes
1-2-3-4 Clutch Assembly
  • Inspect for damaged or broken 1-2-3-4 clutch piston (461) and piston seals damaged, worn or leaking.
  • Inspect for fatigued or binding 1-2-3-4 clutch piston return spring (460).
  • Inspect for improper surface finish on 1-2-3-4 clutch plates (456-458).
  • Inspect for broken or fatigued 1-2-3-4 clutch waved plate (458).
Case Inspect for leaking or damaged 1-2-3-4 clutch fluid passage seal (65).
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