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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1030 (Automatic Transmission - 4L80-E/4L85-E (Troubleshooting)) >> Troubleshooting >> Loss of Power

Loss of Power

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
Loss of Power

Checks Cause
Transmission
  • Low oil
  • Not starting in first gear
TCC System TCC is stuck On, or TCC is dragging.
Torque Converter (1)
  • Debris in the converter
  • Stator loose
Stator Shaft (235) The shaft is broken.
Turbine Shaft (502) The bushing is worn.
Mainshaft (662) The bushing is worn.
Output Shaft (671) The bushing is worn.
Bearing (668) The bearing is worn.