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• MODEL SELECTION INDEX
• MY 2005 WL Series - Service Information
• Section 7C3 Automatic Transmission – 4L60E – Hydraulic and Mechanical Diagnosis
  • 1 General Information
    • 1.1 General Description
  • 2 Functional Test
    • 2.1 Test Description
    • 2.2 Test Procedure
  • 3 Line Pressure Check
    • 3.1 Preliminary Information
    • 3.2 Pressure Check
      • Procedure
        • Pressure Control Solenoid Readings
  • 4 Road Test
    • 4.1 Preliminary Information
      • Electrical Function Check
      • Upshift Control and Torque Converter Clutch (TCC) Apply
      • Part Throttle Detent Downshift
      • Full Throttle Detent Downshift
      • Manual Downshifts
        • Manual 4–3 Downshift
        • Manual 4–2 Downshift
        • Manual 4–1 Downshift
      • Coasting Downshifts
      • Manual Gear Range Selection
        • Reverse
        • Manual First
        • Manual Second
        • Manual Third
  • 5 Fluid Diagnosis
    • 5.1 Introduction
    • 5.2 Diagnosis Procedure
      • Diagnostic Description
      • Diagnostic Table Notes
      • Diagnostic Table
  • 6 Torque Converter Diagnosis Procedure
    • 6.1 Preliminary Information
      • Torque Converter Stator
        • Poor Acceleration at Low Speed
        • Poor Acceleration at High Speed
      • Noise
      • Torque Converter Clutch Shudder
        • If Shudder Occurs During TCC Apply or Release
        • If Shudder Occurs After TCC has Applied
      • Torque Converter/Flexplate Vibration Test
      • Evaluation
      • Rectification
  • 7 Mechanical Component Diagnosis and Repair
    • 7.1 Noise and Vibration Analysis
    • 7.2 Clutch Plate Diagnosis
      • Composition Plates
      • Steel Plates
        • Causes of Burned Clutch Plates
    • 7.3 Engine Coolant In Transmission
    • 7.4 Fluid Leak Diagnosis and Repair
      • Methods for Locating Leaks
        • General Method
        • Powder Method
        • Dye and Black Light Method
      • Repairing the Leak
        • Gaskets
        • Seals
      • Possible Points and Cause of Fluid Leaks
      • Case Porosity Repair
    • 7.5 Shift Solenoid Leak Test
  • 8 Symptom Diagnosis
    • 8.1 General Information
    • 8.2 Symptom Diagnosis Table
  • 9 Diagnostic Tables
    • 9.1 Transmission Malfunction Diagnosis
      • Introduction
      • Oil Pressure High or Low
      • Harsh Shifts
      • Inaccurate Shift Points
      • First Gear Range Only – No Upshift
      • Slips in First Gear
      • Slipping or Rough 1–2 Shift
      • No 2–3 Shift or Shift Slips, Rough or Hunting
      • 2nd/3rd Gear Only or 1st/4th Gears Only
      • Third Gear Only
      • 3–2 Flare or Tie-up
      • No 3–4 Shift, Slips or Rough 3–4 Shift
      • No Reverse or Slips In Reverse
      • No Part Throttle or Delayed Downshifts
      • Harsh Garage Shift
      • No Overrun Braking – Manual 3–2–1
      • No Torque Converter Clutch Apply
      • Torque Converter Clutch Shudder
      • No Torque Converter Clutch Release
      • Drives in Neutral
      • 2nd Gear Start
      • No Park
      • Oil Out the Vent
      • Vibration in Reverse and Whining Noise in Park
      • Ratcheting Noise
      • No Drive in All Ranges
      • No Drive in Drive Range
      • Front Oil Leak
      • Delay in Drive and Reverse
  • 10 4L60E Shift Speed Charts
    • 10.1 Introduction
    • 10.2 GEN III V8 Engine
      • Normal Mode
      • Power Mode
      • Cruise Mode
  • 11 Component Layout and Hydraulic Paths
    • 11.1 Component Layout
      • Control Valve Body Passages and Checkball Locations
      • Control Valve Body Valve Trains
      • Spacer Plate Passages
      • Spacer Plate to Control Valve Body Gasket
      • Spacer Plate to Transmission Case Gasket
      • Transmission Case Fluid Passages and Checkball Locations
      • Servo Passages 2–4
      • Oil Pump Cover Fluid Passages (Transmission Case Side)
      • Oil Pump Cover Fluid Passages
      • Oil Pump Body Fluid Passages