Automatic Transmission - 6T40 (MHH) Or 6T45 (MH7) - Description And Operation

• Description and Operation
  • Definitions and Abbreviations
    • Throttle Positions
    • Shift Condition Definitions
    • Noise Conditions
    • Driver Shift Control
    • Transmission Abbreviations
  • Transmission Identification Information
  • Transmission General Description
  • Transmission Component and System Description
  • Transmission Adaptive Functions
  • Transmission Indicators and Messages
  • Electronic Component Description
    • Control Solenoid Valve Assembly
    • Manual Shift Detent Lever with Shaft Position Switch Assembly
    • Input Speed Sensor (ISS)
    • Output Speed Sensor (OSS)
    • Transmission Fluid Pump- Auxiliary
  • Non-Shifting Clutch Function Verification Description
  • Automatic Transmission Hydraulic Diagrams
    • Park - Engine Running (Gen 2/Hybrid)
      • Notes
      • Fluid Pressure Directed in Preparation for a Shift
      • Low and Reverse Clutch Applies
      • Park - Engine Running - Gen 2/Hybrid - A/T System Hydraulic Diagram
    • Reverse (Gen 2/Hybrid)
      • Notes
      • 3-5-Reverse Clutch Applies
      • Fluid Pressure Directed in Preparation for a Possible Default Action
      • Reverse - Gen 2/Hybrid - A/T System Hydraulic Diagram
    • Neutral - Engine Running (Gen 2/Hybrid)
      • Notes
      • 3-5 Reverse Clutch Releases
      • Neutral - Engine Running - Gen 2/Hybrid - A/T System Hydraulic Diagram
    • Drive Range, First Gear Engine Braking (Gen 2/Hybrid)
      • Notes
      • 1-2-3-4 Clutch Applies
      • Low and Reverse Clutch Remains Applied to Provide Engine Braking
      • Drive Range, First Gear Engine Braking - Gen 2/Hybrid - A/T System Hydraulic Diagram
    • Drive Range, First Gear (Gen 2/Hybrid)
      • Notes
      • Low & Reverse Clutch Releases
      • Fluid Pressure Directed in Preparation for a Shift
      • Fluid Pressure Directed in Preparation for Torque Converter Clutch (TCC) Apply
      • Drive Range, First Gear - Gen 2/Hybrid - A/T System Hydraulic Diagram
    • Drive Range, Second Gear (Gen 2/Hybrid)
      • Notes
      • 2-6 Clutch Applies
      • Drive Range, Second Gear - Gen 2/Hybrid - A/T System Hydraulic Diagram
    • Drive Range, Third Gear (Gen 2/Hybrid)
      • Notes
      • 3-5-Reverse Clutch Applies
      • 2-6 Clutch Releases
      • Drive Range, Third Gear - Gen 2/Hybrid - A/T System Hydraulic Diagram
    • Drive Range - Fourth Gear (Gen 2/Hybrid)
      • Notes
      • 4-5-6 Clutch Applies
      • 3-5-Reverse Clutch Releases
      • Torque Converter Clutch (TCC) Applies
      • Drive Range, Fourth Gear - Gen 2/Hybrid - A/T System Hydraulic Diagram
    • Drive Range - Fourth Gear Default (Gen 2/Hybrid)
      • Notes
      • 1-2-3-4 Clutch Applies or Remains Applied
      • 4-5-6 Clutch Applies or Remains Applied
      • 3-5-Reverse Clutch Releases
      • 2-6 Clutch Releases
      • Torque Converter Clutch (TCC) Releases
      • Drive Range, Fourth Gear Default - Gen 2/Hybrid - A/T System Hydraulic Diagram
    • Drive Range, Fifth Gear (Gen 2/Hybrid)
      • Notes
      • 3-5-Reverse Clutch Applies
      • 1-2-3-4 Clutch Releases
      • Drive Range, Fifth Gear - Gen 2/Hybrid - A/T System Hydraulic Diagram
    • Drive Range, Sixth Gear (Gen 2/Hybrid)
      • Notes
      • 2-6 Clutch Applies
      • 3-5 Reverse Clutch Releases
      • Drive Range, Sixth Gear - Gen 2/Hybrid - A/T System Hydraulic Diagram
  • Fluid Passages
    • Torque Converter and Differential Housing - Case Side
    • Fluid Pump Body - Fluid Pump Cover Side
    • Fluid Pump Cover - Fluid Pump Body Side
    • Case - Torque Converter and Differential Housing Side
    • Case - Control Valve Body Side
    • Control Valve Body Spacer Plate Assembly - Case Side
    • Control Valve Body - Case Side
    • Control Valve Body - Channel Plate Side
    • Channel Plate to Valve Body Spacer Plate Assembly - Channel Plate Side
    • Channel Plate - Control Valve Body Side
    • Channel Plate - Control Solenoid (w/Body and TCM) Valve Assembly Side
    • Control Solenoid (w/Body and TCM) Valve Assembly - Channel Plate Side