Section 14 (Automatic Transmission - 6T45 (MHG) - 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 (Gen 3)
  • Transmission Component and System Description (Gen 3)
  • Manual Mode Description and Operation
    • K9 Body Control Module
    • K71 Transmission Control Module
    • S2 Transmission Manual Shift Switch
    • S3 Transmission Shift Lever
    • Circuit System Description
    • Manual Mode Shifting Operation
  • Transmission Adaptive Functions
  • Transmission Indicators and Messages
  • Electronic Component Description
    • Q8 Control Solenoid Valve Assembly
    • Pressure Control Solenoid Valve - Normally Low
    • Pressure Control Solenoid Valve - Normally High
    • On/Off Solenoid Valve - Normally Closed
    • Circuit/System Description - Solenoid Valves
    • Q27A Pressure Control Solenoid Valve 1
    • Q27B Pressure Control Solenoid Valve 2
    • Q27C Pressure Control Solenoid Valve 3
    • Q27D Pressure Control Solenoid Valve 4
    • Q27E Pressure Control Solenoid Valve 5
    • Q32A Shift solenoid Valve 1
    • Temperature Sensor
    • B15 Transmission Internal Mode Switch
    • Input Speed Sensor (ISS)
    • Output Speed Sensor (OSS)
  • Non-Shifting Clutch Function Verification Description
  • Park - Engine Running (Gen 3)
    • Notes
    • Fluid Pressure Directed in Preparation for a Shift
    • Low and Reverse Clutch Applies
    • Park - Engine Running - Gen 3 - A/T System Hydraulic Diagram
  • Reverse (Gen 3)
    • Notes
    • 3-5-Reverse Clutch Applies
    • Fluid Pressure Directed in Preparation for a Possible Default Action
    • Reverse - Gen 3 - A/T System Hydraulic Diagram
  • Neutral - Engine Running (Gen 3)
    • Notes
    • 3-5 Reverse Clutch Releases
    • Neutral - Engine Running - Gen 3 - A/T System Hydraulic Diagram
  • Drive Range, First Gear Engine Braking (Gen 3)
    • Notes
    • 1-2-3-4 Clutch Applies
    • Low and Reverse Clutch Remains Applied to Provide Engine Braking
    • Drive Range, First Gear Engine Braking - Gen 3 - A/T System Hydraulic Diagram
  • Drive Range, First Gear (Gen 3)
    • 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 3 - A/T System Hydraulic Diagram
  • Drive Range, Second Gear (Gen 3)
    • Notes
    • 2-6 Clutch Applies
    • Drive Range, Second Gear - Gen 3 - A/T System Hydraulic Diagram
  • Drive Range, Third Gear (Gen 3)
    • Notes
    • 3-5-Reverse Clutch Applies
    • 2-6 Clutch Releases
    • Drive Range, Third Gear - Gen 3 - A/T System Hydraulic Diagram
  • Drive Range, Fourth Gear (Gen 3)
    • Notes
    • 4-5-6 Clutch Applies
    • 3-5-Reverse Clutch Releases
    • Torque Converter Clutch (TCC) Applies
    • Drive Range, Fourth Gear - Gen 3 - A/T System Hydraulic Diagram
  • Drive Range, Fourth Gear Default (Gen 3)
    • 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 3 - A/T System Hydraulic Diagram
  • Drive Range, Fifth Gear (Gen 3)
    • Notes
    • 3-5-Reverse Clutch Applies
    • 1-2-3-4 Clutch Releases
    • Drive Range, Fifth Gear - Gen 3 - A/T System Hydraulic Diagram
  • Drive Range, Sixth Gear (Gen 3)
    • Notes
    • 2-6 Clutch Applies
    • 3-5 Reverse Clutch Releases
    • Drive Range, Sixth Gear - Gen 3 - A/T System Hydraulic Diagram
  • Fluid Passages (Gen 3)
    • Torque Converter and Differential Housing - Case Side
    • Fluid Pump Body - Fluid Pump Cover Side
    • Fluid Pump Cover - Fluid Pump Side
    • Fluid Pump Cover - Fluid Pump Body Side
    • Fluid Pump Transfer Plate Body
    • 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