Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2006COBALT SS, 4D SEDAN, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 24 (AUTOMATIC TRANSAXLE - 4T45-E - OVERHAUL)
2006 Chevrolet Cobalt SS, 4D Sedan, Standard
Section 24 (Automatic Transaxle - 4T45-E - Overhaul)
2006 Chevrolet Cobalt SS, 4D Sedan, StandardSECTION Section 24 (Automatic Transaxle - 4T45-E - Overhaul)
WARNING: This page is about a different variant/trim than selected.
- Specifications
- Component Locator
- Off-Vehicle Repair Instructions
- Torque Converter Assembly Removal
- Transmission Holding Fixture Assemble
- Stub Shaft Removal
- Output Shaft Speed Sensor Removal
- Fluid Pan and Gasket Removal
- Transmission Fluid Filter, Seal, and Level Control Valve Removal
- Oil Feed Pipes Removal
- Intermediate/Fourth Servo Removal
- Low and Reverse Servo Removal
- Case Side Cover Removal
- Output Shaft Removal
- Oil Pump and Oil Pump Shaft Removal
- Wire Harness Disconnect
- Transmission Fluid Pressure Switch Removal
- Control Valve Body Assembly and Gasket Removal
- Spacer Plate and Gasket 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, Detent Lever, and Park Lock Removal
- Transmission Cooler Line Seals 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 Cooler Line Seals Installation
- Manual Shift Shaft, Detent Lever, and Park Lock 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, Driven Sprockets and Drive Link Disassemble
- Drive, Driven Sprockets 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
- Spacer Plate and Gaskets 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 Shaft 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
- Fluid Pan and Gasket Installation
- Torque Converter Installation
- Description and Operation
- 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
- Automatic Transmission Hydraulic Diagrams
- Special Tools and Equipment
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.