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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 154 (Automatic Transmission - 4L80-E/4L85-E - Service, Diagnosis & Troubleshooting) >> Vibration

Section 154 (Automatic Transmission - 4L80-E/4L85-E - Service, Diagnosis & Troubleshooting): Vibration

WARNING: This page is about a different car, the 2007 GMC Yukon XL and 2007 Chevrolet Suburban. However, it is still accessible from the selected car via links, so may be relevant.
Vibration

Checks Cause
Torque Converter (1)
  • Out of balance
  • Internal failure
  • Not sealed in crankshaft pilot
Transmission/Engine Misaligned or missing dowels
Case Extension (19) Output shaft support bushing is worn.
Turbine Shaft (502) Worn surface of the stator shaft bushing
Mainshaft (662) Worn bushing
Output Shaft (671) Worn bushing
Bearing (668) Worn