Section 2 (Automatic Transmission - 6L80-E - Symptom Troubleshooting & Diagnosis)

• Symptoms - Automatic Transmission
  • Notes
  • Visual/Physical Inspection
  • Intermittent
  • Symptom List
• Control Solenoid Valve and Transmission Control Module Assembly Inspection
  • Notes
  • Control Solenoid (w/Body and TCM) Valve Assembly Housing and Filter Plate
  • Control Solenoid Valve Assembly Inspection - Solenoids, Sensors, and Contacts
  • Control Solenoid Valve Assembly Supply and Control Fluid Inspection
• Control Solenoid Valve and Transmission Control Module Assembly Input Shaft Speed/Output Shaft Speed Input Test
  • Special Tools
• Control Solenoid Valve and Transmission Control Module Assembly Solenoid Performance Test
  • Special Tools
  • Preliminary Procedures
• Reset Transmission Adapts
• Transmission Fluid Level and Condition Check
• Transmission Fluid Fill Procedure
  • Special Tools
  • Fill Tube Plug Method
  • Check Plug Method
• Line Pressure Check
• Road Test
  • Notes
  • Electrical Function Check
  • Upshift Control and Torque Converter Clutch (TCC) Apply
  • Part Throttle Step-In Downshifts
  • Manual Downshifts
    • Notes
    • Coasting Downshifts
  • Manual Gear Range Selection
    • Notes
    • Reverse
    • Driver Shift Control (DSC)
• Torque Converter Diagnosis
  • Torque Converter Stator
  • Poor Acceleration at Low Speed - Stator Roller Clutch Freewheels at All Times
  • Poor Acceleration at High Speed - Stator Roller Clutch is Locked Up at All Times
  • Torque Converter Bearing Noise
  • Torque Converter Clutch
  • Torque Converter Clutch Shudder
  • If Shudder Occurs During TCC Apply, Release, and ECCC
  • If Shudder Occurs After TCC has Locked
  • Torque Converter Vibration Test
  • Isolating Vibration
  • Indexing Torque Converter
• Flex Plate/Torque Converter Vibration Test
  • Isolating Vibration
  • Indexing Torque Converter
• Bushing and Mating Shaft Inspection
• Vibration
• Noise and Vibration Analysis
• Whine/Growl Noise That Changes with Vehicle Speed
• Whine/Growl Noise That Changes with Engine Speed
• Noise in First or Reverse Gear
• Noise in First, Second, Third, Fourth, Fifth, or Reverse Gear
• Noise in First, Second, Sixth, or Reverse Gear
• Noise in Second or Sixth Gear
• Noise During 3-4 or 4-3 Shifts
• Noise in Fourth, Fifth, or Sixth Gear
• Clutch Plate Diagnosis
  • Composition Plates
  • Steel Plates
  • Causes of Burned Clutch Plates
• Engine Coolant/Water in Transmission
• Fluid Leak Diagnosis
  • General Method
  • Powder Method
  • Dye and Black Light Method
  • Find the Cause of the Leak
    • Notes
    • Gaskets
    • Seals
  • Possible Points of Fluid Leaks
    • Transmission Oil Pan
    • Case Leak
    • Leak at the Torque Converter End
    • Leak at the Vent Pipe
    • Leak at the Case Extension
• Case Porosity Repair
• Transmission Fluid Cooler Flushing and Flow Test
  • Notes
  • Cooler Flow Check and Flushing Steps
  • Special Tools
  • Machine Set-up
  • Determine Minimum Flow Rate
  • Back Flush Procedure
  • Forward Flush
  • Flow Test
  • Code Recording Procedure
  • Clean-up
• Transmission Overheats
• Automatic Transmission Fluid Leaks
• Shift Indicator Indicates Wrong Gear Selection
• No Park or Drive
• Harsh Garage Shift
• No Drive in All Ranges
• No First Gear
• No First and Reverse Gears
• Harsh, Soft, Delayed or Slipping First or Reverse Gear
• No First, Second, Third, and Fourth Gear
• Harsh, Soft, Delayed or Slipping 1-2-3-4 Shift
• No Second and Sixth Gear
• Harsh, Soft, Delayed or Slipping Second or Sixth Gear
• No Third, Fifth, and Reverse Gear
• Harsh, Soft, Delayed or Slipping Third, Fifth, or Reverse Gear
• No Fourth, Fifth, and Sixth Gear
• Harsh, Soft, Delayed or Slipping 4-5-6 Shift
• No Torque Converter Clutch Apply
• No Torque Converter Clutch Release
• Harsh Torque Converter Clutch Apply, or Inoperative or No Electronically Controlled Capacity Clutch Control
• No Reverse Gear
• Fluid Pressure High or Low
• No Torque Converter Clutch Slip with Torque Converter Clutch Engaged