Section 754 (Automatic Transaxle - 4T45-E - Removal & Installation, Service, Overhaul, Troubleshooting & Diagnosis)
WARNING: This page is about a different car, the 2008 Pontiac G5 and 2008 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.
- Diagnostic Information and Procedures
- Symptoms - Automatic Transmission
- Transmission Fluid Check
- Line Pressure Check
- Road Test
- Torque Converter Diagnosis
- Flex Plate/Torque Converter Vibration Test
- Noise and Vibration Analysis
- Clutch Plate Diagnosis
- Engine Coolant/Water in Transmission
- Fluid Leak Diagnosis
- Case Porosity Repair
- Shift Solenoid Leak Test
- Transmission Fluid Cooler Flushing and Flow Test (J 45096)
- Transmission Fluid Cooler Flushing and Flow Test (J 35944-A)
- Bushing and Mating Shaft Inspection
- Automatic Transmission Fluid Leaks
- High or Low Line Pressure
- Inaccurate/Inconsistent Shift Points
- Harsh Shifts
- No Reverse or Slips in Reverse
- No First Gear, Slips in First Gear
- No Second Gear, Slips in Second Gear
- No Third Gear, Slips in Third Gear
- Second Gear Only
- No Fourth Gear, or Slips in Fourth Gear
- Loss of Drive
- Loss of Power
- Engine Stall
- First and Second Gears Only
- Third and Fourth Gears Only
- First and Fourth Gears Only
- Second and Third Gears Only
- No Park
- Ratcheting Noise
- No Engine Braking; All Manual Ranges
- No Engine Braking; Manual Second - Second Gear
- No Engine Braking; Manual First - First Gear
- Drives in Neutral
- No Gear Selection
- Shift Indicator Indicates Wrong Gear Selection
- Fluid Foaming
- Vibration
- Whine Noise Varying with RPM
- High Pitch Whine Noise
- Popping Noise
- Buzz Noise or High Frequency Rattle Sound
- Whine/Growl Noise That Changes with Vehicle Speed
- Final Drive Noise or Hum Noise
- Noise in Random Ranges
- Noise in First, Second, Third, or Fourth
- No Torque Converter Clutch Release
- Torque Converter Clutch Apply with Cold Engine
- Torque Converter Clutch Shudder
- Repair Instructions - On Vehicle
- Transmission Control Module Replacement
- Floor Shift Control Knob Replacement
- Transmission Control Replacement
- Shift Control Cable Adjustment
- Park/Neutral Position Switch Replacement
- Park/Neutral Position Switch Adjustment
- Oil Pan Replacement
- Automatic Transmission Fluid Filter and Seal Replacement
- Vehicle Speed Sensor Replacement
- Low/Reverse Servo Assembly Replacement
- Intermediate/Fourth Servo Assembly Replacement
- Transmission Fluid Cooler Hose Replacement
- Oil Feed Pipes Replacement
- Control Valve Body Cover Replacement
- Control Valve Body Cover Gasket Replacement
- Wiring Harness Replacement
- Torque Converter Clutch Pulse Width Modulation Solenoid Replacement
- 1-2 Shift Solenoid Valve Replacement
- 2-3 Shift Solenoid Valve Replacement
- Pressure Control Solenoid Valve Replacement
- Transmission Fluid Pressure Manual Valve Position Switch Replacement
- Control Valve Body Replacement
- Front Wheel Drive Shaft Seal and Output Shaft Sleeve Replacement - Right Side
- Front Wheel Drive Shaft Seal and Output Shaft Sleeve Replacement - Left Side
- Transmission Mount Inspection
- Transmission Front Mount Replacement
- Transmission Rear Mount Replacement
- Transmission Mount Replacement - Left Side
- Transmission Replacement
- Repair Instructions - Off Vehicle
- Torque Converter Assembly Removal
- Transmission Holding Fixture Assemble
- Stub Shaft Removal
- Output Speed Sensor Removal
- Automatic Transmission Fluid Pan and Gasket Removal
- Automatic Transmission Fluid Filter, Seal, and Level Control Valve Removal
- Oil Feed Pipes Removal
- Intermediate/Fourth Servo Removal
- Low and Reverse Servo Removal
- Control Valve Body Cover Removal
- Output Shaft Removal
- Oil Pump and Oil Pump Shaft Removal
- Wire Harness Disconnect
- Transmission Fluid Pressure Switch Removal
- Control Valve Body Assembly Removal
- Control Valve Body Spacer Plate Removal
- Checkball Removal
- Manual Valve Clip Removal
- Channel Plate and Gasket Removal
- Accumulator Spring Removal
- Drive Sprocket, Driven Sprocket, and Drive Link Removal
- Input Speed Sensor Removal
- Wiring Harness Removal
- Driven Sprocket Support Assembly Removal
- Second Clutch Plates Removal
- Reverse Input Clutch Housing Removal
- Intermediate Fourth Band Removal
- Direct/Coast Clutch and Reaction Gear Set Removal
- Input Carrier and Reaction Gear Assembly Removal
- Input Internal Gear, Forward Clutch Hub Removal
- Forward Clutch and Low/Reverse Band Removal
- Forward Clutch Support, Low Roller Clutch Removal
- Final Drive Assembly Removal
- Final Drive Internal Gear Removal
- Manual Shift Shaft Pin, Detent Lever, and Park Pawl Actuator Assembly Removal
- Transmission Fluid Cooler Pipe Fitting Seal Removal
- Torque Converter Seal Removal
- Drive Sprocket Support Removal
- Right Hand Axle Seal Removal
- Case Inspection
- Actuator Guide Replacement
- Drive Sprocket Support Installation
- Torque Converter Seal Installation
- Transmission Fluid Cooler Pipe Fitting Seal Installation
- Manual Shift Shaft Pin, Detent Lever, and Park Pawl Actuator Assembly Installation
- Final Drive Assembly Disassemble
- Final Drive Assembly Assemble
- Final Drive Pinion End Play Check
- Fretting Ring, Final Drive Internal Gear Install
- Final Drive and Differential Assembly Install
- Forward Clutch Support, Roller Clutch Disassemble
- Forward Clutch Support, Low Roller Clutch Assemble
- Forward Clutch Support, Low Roller Clutch Install
- Forward Clutch Assembly Disassemble
- Forward Clutch Assembly Assemble
- Low/Reverse Band Installation
- Forward Clutch Assembly Installation
- Forward Clutch Functional Air Check
- Input Internal Gear, Forward Clutch Hub Disassemble
- Input Internal Gear, Forward Clutch Hub Assemble
- Input Internal Gear, Forward Clutch Hub Install
- Reaction Internal Gear, Input Carrier Disassemble
- Input Carrier Pinion Gear Clearance Check
- Reaction Internal Gear, Input Carrier Assemble
- Reaction Internal Gear, Input Carrier Installation
- Direct/Coast Clutch, Reaction Carrier Disassemble
- Reaction Carrier Pinion Clearance Check
- Direct/Coast Clutch, Reaction Carrier Assemble
- Direct and Coast Clutch Functional Air Checks
- Direct/Coast Clutch, Reaction Carrier Installation
- Selective Washer Measurement and Installation
- Reverse Input and Second Roller Clutch Disassemble
- Reverse Input and Second Roller Clutch Assemble
- Reverse Clutch Functional Air Check
- Reverse Input and Second Roller Clutch Installation
- Intermediate Fourth Band Assembly Installation
- Second Clutch Plate Installation
- Driven Sprocket Support Assembly Disassemble
- Drive Sprocket Support Assemble
- Second Clutch Functional Air Check
- Driven Sprocket Support Assembly Installation
- Wiring Harness Connection
- Input Speed Sensor Installation
- Drive Sprocket, Driven Sprocket, and Drive Link Disassemble
- Drive Sprocket, Driven Sprocket, and Drive Link Assemble
- Drive Sprocket, Driven Sprocket, and Drive Link Installation
- Channel Plate Assembly Disassemble
- Channel Plate Assembly Assemble
- Accumulator Springs Installation
- Channel Plate Assembly Installation
- Manual Valve Link Installation
- Checkballs Installation
- Control Valve Body Spacer Plate Installation
- Control Valve Body Disassemble
- Control Valve Body Assemble
- Control Valve Assembly and Transmission Fluid Pressure Switch Installation
- Wiring Harness Assembly Connect
- Oil Pump Cleaning and Inspection
- Oil Pump Assembly Installation
- Side Cover/Gaskets, Disassemble, Assemble, Install
- Side Cover Axle Seal Installation
- Output Shaft Inspect
- Output Shaft Sleeve Replacement
- Output Shaft Installation
- Stub Shaft Sleeve Assembly Installation
- Right Hand Axle Seal Assemble
- Output Speed Sensor Installation
- Intermediate/Fourth Servo Disassemble
- Intermediate/Fourth Servo Assemble and Installation
- Low and Reverse Servo Disassemble
- Low and Reverse Servo Assemble and Installation
- Oil Feed Pipes Assemble
- Filter Assembly and Seal Installation
- Oil Level Control Valve Installation
- Automatic Transmission Fluid Pan and Gasket Installation
- Torque Converter Installation
- Description and Operation
- Transmission General Information
- Definitions and Abbreviations
- Transmission Identification Information
- Transmission General Description
- Transmission Component and System Description
- Transmission Adaptive Functions
- Electronic Component Description
- Transmission Control Module
- Torque Converter Clutch Pulse Width Modulated Solenoid Valve
- Automatic Transmission Pressure Control Solenoid Valve
- Shift Solenoid Valves: 1-2 and 2-3
- Automatic Transmission Fluid Pressure Manual Valve Position Switch Assembly
- Output Speed Sensor (OSS)
- Input Speed Sensor (ISS)
- Automatic Transmission Fluid Temperature Sensor
- Park/Neutral Position Switch
- Floor Shift Control, Some Models
- Automatic Transmission Hydraulic Diagrams
- Park or Neutral - Engine Running (W/O Electronic Range Select Mode)
- Notes
- Pressure Regulation
- Low and Reverse Band Applies
- Shift Accumulation
- Torque Converter/Cooler and Lube Circuits
- Park - Engine Running - Without Electronic Range Select Mode - A/T System Hydraulic Diagram
- Reverse Clutch Releases
- Low and Reverse Band Remains Applied
- Neutral - Engine Running - Without Electronic Range Select Mode - A/T System Hydraulic Diagram
- Park or Neutral - Engine Running (With Electronic Range Select Mode)
- Notes
- Pressure Regulation
- Low and Reverse Band Applies
- Shift Accumulation
- Torque Converter/Cooler and Lube Circuits
- Park - Engine Running - With Electronic Range Select Mode - A/T System Hydraulic Diagram
- Reverse Clutch Releases
- Low and Reverse Band Remains Applied
- Neutral - Engine Running - With Electronic Range Select Mode - A/T System Hydraulic Diagram
- Reverse (W/O Electronic Range Select Mode)
- Reverse (With Electronic Range Select Mode)
- Overdrive Range, First Gear (W/O Electronic Range Select Mode)
- Overdrive Range, First Gear (With Electronic Range Select Mode)
- Overdrive Range, Second Gear (W/O Electronic Range Select Mode)
- Overdrive Range, Second Gear (With Electronic Range Select Mode)
- Overdrive Range, Third Gear - Torque Converter Clutch Not Applied (W/O Electronic Range Select Mode)
- Overdrive Range, Third Gear - Torque Converter Clutch Not Applied (With Electronic Range Select Mode)
- Overdrive Range, Fourth Gear - Torque Converter Clutch Applied (W/O Electronic Range Select Mode)
- Overdrive Range, Fourth Gear - Torque Converter Clutch Applied (With Electronic Range Select Mode)
- Overdrive Range, 4-3 Downshift - Torque Converter Clutch Not Applied (W/O Electronic Range Select Mode)
- Drive Range, Manual Third (from Overdrive Range) (W/O Electronic Range Select Mode)
- Manual Third Gear (With Electronic Range Select Mode)
- Drive Range, Manual Second (from Drive, Manual Third) (W/O Electronic Range Select Mode)
- Manual Second Gear (With Electronic Range Select Mode)
- Drive Range, Manual First (from Drive, Manual Second) (W/O Electronic Range Select Mode)
- Manual First Gear (With Electronic Range Select Mode)
- Park or Neutral - Engine Running (W/O Electronic Range Select Mode)
- Fluid Passages
- Special Tools And Equipment