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Home >> Chevrolet >> 2007 >> Chevy Express G2500, Van Cargo, 6.6 6 >> Repair and Diagnosis >> Transmission >> Hydraulic Diagrams >> Automatic Transmission - 4L80-E/4L85-E - Removal & Installation, Service, Overhaul, Troubleshooting & Diagnosis >> Diagnostic Information And Procedures >> Loss of Power

Loss of Power

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.
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