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Home >> GMC >> 2005 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 222 (Automatic Transmission - 5L40-E/5L50-E - Service, Diagnosis & Trouble Shooting) >> Harsh Shift D to R

Harsh Shift D to R

WARNING: This page is about a different car, the 2005 Cadillac STS. However, it is still accessible from the selected car via links, so may be relevant.
Harsh Shift D to R

Check Causes
DEFINITION: Gear engagement that is harsh when the engine is idling in Park or Neutral, and the gear selector is moved to Drive or Reverse range.
Forward Clutch
  • Damaged or worn piston (436)
  • Damaged or worn clutch plates (449)
  • Damaged or stuck ball check valve (434)
Reverse Clutch
  • Damaged or worn piston (404)
  • Damaged or worn clutch plates (418/417)
  • Damaged or stuck ball check valve (403)
Fluid Pump Assembly Refer to Harsh Shift 4 to 5, or 5 to 4 .
PC Solenoid Damaged