LEMON Manuals: Even more car manuals for everyone
Home >> GMC >> 2020 >> Acadia SL >> Repair and Diagnosis >> External Pages >> Different car >> Section 411 (Automatic Transmission - 9T60 (M3G) Or 9T65 (M3W) - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> Harsh Garage Shift

Harsh Garage Shift

WARNING: This page is about a different car, the 2023 GMC Acadia. However, it is still accessible from the selected car via links, so may be relevant.
Checks Causes
Input Carrier Assembly (552)
  • Inspect for worn or stripped Output Internal Gear Splines.
1-Reverse and 1-2-3-4-5-6 Clutch Piston Housing (590)
  • Inspect for damaged or fatigued 1 - 2 - 3 - 4 - 5 - 6 Clutch Wave Plate (595). Refer to Clutch Plate Diagnosis .
  • Inspect for stripped or sheared splines on 1 - 2 - 3 - 4 - 5 - 6 Clutch Plate (596). Refer to Clutch Plate Diagnosis .
  • Inspect for correct fluid level.