GM Service Manual Online
For 1990-2009 cars only
Makes
🢒
Chevrolet
🢒
2009
🢒
Cobalt
🢒
Transmission
🢒 Automatic Transmission - 4T45-E
Transmission
All Component Locator
Component Location
Disassembled Views
Fluid Passages
All Description and Operation
Definitions and Abbreviations
Drive Range, Manual First (from Drive, Manual Second)
Drive Range, Manual Second (from Drive, Manual Third)
Drive Range, Manual Third (from Overdrive Range)
Electronic Component Description
Manual First Gear
Manual Second Gear
Manual Third Gear
Overdrive Range, 4-3 Downshift - Torque Converter Clutch Not Applied
Overdrive Range, First Gear
Overdrive Range, Fourth Gear - Torque Converter Clutch Applied
Overdrive Range, Second Gear
Overdrive Range, Third Gear - Torque Converter Clutch Not Applied
Park or Neutral - Engine Running
Reverse
Transmission Adaptive Functions
Transmission Component and System Description
Transmission General Description
Transmission General Information
Transmission Identification Information
All Special Tools and Equipment
Special Tools
Cleaning, Inspection, and Adjustment
Case Inspection
Direct and Coast Clutch Functional Air Checks
Final Drive Pinion End Play Check
Forward Clutch Functional Air Check
Input Carrier Pinion Gear Clearance Check
Oil Pump Cleaning and Inspection
Output Shaft Inspect
Park/Neutral Position Switch Adjustment
Reaction Carrier Pinion Clearance Check
Reverse Clutch Functional Air Check
Second Clutch Functional Air Check
Selective Washer Measurement and Installation
Transmission Mount Inspection
Diagnostic Procedures
Automatic Transmission Fluid Leaks
Bushing and Mating Shaft Inspection
Buzz Noise or High Frequency Rattle Sound
Case Porosity Repair
Diagnostic Starting Point - Automatic Transmission
Drives in Neutral
Engine Stall
Final Drive Noise or Hum Noise
First and Fourth Gears Only
First and Second Gears Only
Flex Plate/Torque Converter Vibration Test
Fluid Foaming
Fluid Leak Diagnosis
Harsh Shifts
High or Low Line Pressure
High Pitch Whine Noise
Inaccurate/Inconsistent Shift Points
Line Pressure Check
Loss of Drive
Loss of Power
No Engine Braking; All Manual Ranges
No Engine Braking; Manual First - First Gear
No Engine Braking; Manual Second - Second Gear
No First Gear, Slips in First Gear
No Fourth Gear, or Slips in Fourth Gear
No Gear Selection
No Park
No Reverse or Slips in Reverse
No Second Gear, Slips in Second Gear
No Third Gear, Slips in Third Gear
No Torque Converter Clutch Release
Noise in First, Second, Third, or Fourth
Noise in Random Ranges
Popping Noise
Ratcheting Noise
Road Test
Second and Third Gears Only
Second Gear Only
Shift Indicator Indicates Wrong Gear Selection
Shift Solenoid Leak Test
Symptoms - Automatic Transmission
Third and Fourth Gears Only
Torque Converter Clutch Apply with Cold Engine
Torque Converter Clutch Shudder
Torque Converter Diagnosis
Transmission Fluid Check
Transmission Fluid Cooler Flushing and Flow Test
Vibration
Whine Noise Varying with RPM
Whine/Growl Noise That Changes with Vehicle Speed
Diagnostic Trouble Codes
DTC P0218
DTC P0562 or P0563
DTC P0601-P0604 or P062F
DTC P0705
DTC P0711, P0712, or P0713
DTC P0716 or P0717
DTC P0722 or P0723
DTC P0741 or P0742
DTC P0751 or P0752
DTC P0756 or P0757
DTC P0842 or P0843
DTC P0961
DTC P0973 or P0974
DTC P0976 or P0977
DTC P150C
DTC P1810, P1816, or P1818
DTC P1811
DTC P2534
DTC P2763 or P2764
Disassembly, Overhaul, Repair, and Assembly
Accumulator Spring Removal
Accumulator Springs Installation
Actuator Guide Replacement
Automatic Transmission Fluid Filter, Seal, and Level Control Valve Removal
Automatic Transmission Fluid Pan and Gasket Installation
Automatic Transmission Fluid Pan and Gasket Removal
Channel Plate and Gasket Removal
Channel Plate Assembly Assemble
Channel Plate Assembly Disassemble
Channel Plate Assembly Installation
Checkball Removal
Checkballs Installation
Control Valve Assembly and Transmission Fluid Pressure Switch Installation
Control Valve Body Assemble
Control Valve Body Assembly Removal
Control Valve Body Cover Removal
Control Valve Body Disassemble
Control Valve Body Spacer Plate Installation
Control Valve Body Spacer Plate Removal
Direct/Coast Clutch and Reaction Gear Set Removal
Direct/Coast Clutch, Reaction Carrier Assemble
Direct/Coast Clutch, Reaction Carrier Disassemble
Direct/Coast Clutch, Reaction Carrier Installation
Drive Sprocket Support Assemble
Drive Sprocket Support Installation
Drive Sprocket Support Removal
Drive Sprocket, Driven Sprocket, and Drive Link Assemble
Drive Sprocket, Driven Sprocket, and Drive Link Disassemble
Drive Sprocket, Driven Sprocket, and Drive Link Installation
Drive Sprocket, Driven Sprocket, and Drive Link Removal
Driven Sprocket Support Assembly Disassemble
Driven Sprocket Support Assembly Installation
Driven Sprocket Support Assembly Removal
Filter Assembly and Seal Installation
Final Drive and Differential Assembly Install
Final Drive Assembly Assemble
Final Drive Assembly Disassemble
Final Drive Assembly Removal
Final Drive Internal Gear Removal
Forward Clutch and Low/Reverse Band Removal
Forward Clutch Assembly Assemble
Forward Clutch Assembly Disassemble
Forward Clutch Assembly Installation
Forward Clutch Support, Low Roller Clutch Assemble
Forward Clutch Support, Low Roller Clutch Install
Forward Clutch Support, Low Roller Clutch Removal
Forward Clutch Support, Roller Clutch Disassemble
Fretting Ring, Final Drive Internal Gear Install
Input Carrier and Reaction Gear Assembly Removal
Input Internal Gear, Forward Clutch Hub Assemble
Input Internal Gear, Forward Clutch Hub Disassemble
Input Internal Gear, Forward Clutch Hub Install
Input Internal Gear, Forward Clutch Hub Removal
Input Speed Sensor Installation
Input Speed Sensor Removal
Intermediate Fourth Band Assembly Installation
Intermediate Fourth Band Removal
Intermediate/Fourth Servo Assemble and Installation
Intermediate/Fourth Servo Disassemble
Intermediate/Fourth Servo Removal
Low and Reverse Servo Assemble and Installation
Low and Reverse Servo Disassemble
Low and Reverse Servo Removal
Low/Reverse Band Installation
Manual Shift Shaft Pin, Detent Lever, and Park Pawl Actuator Assembly Installation
Manual Shift Shaft Pin, Detent Lever, and Park Pawl Actuator Assembly Removal
Manual Valve Clip Removal
Manual Valve Link Installation
Oil Feed Pipes Assemble
Oil Feed Pipes Removal
Oil Level Control Valve Installation
Oil Pump and Oil Pump Shaft Removal
Oil Pump Assembly Installation
Output Shaft Installation
Output Shaft Removal
Output Shaft Sleeve Replacement
Output Speed Sensor Installation
Output Speed Sensor Removal
Reaction Internal Gear, Input Carrier Assemble
Reaction Internal Gear, Input Carrier Disassemble
Reaction Internal Gear, Input Carrier Installation
Reverse Input and Second Roller Clutch Assemble
Reverse Input and Second Roller Clutch Disassemble
Reverse Input and Second Roller Clutch Installation
Reverse Input Clutch Housing Removal
Right Hand Axle Seal Assemble
Right Hand Axle Seal Removal
Second Clutch Plate Installation
Second Clutch Plates Removal
Side Cover Axle Seal Installation
Side Cover/Gaskets, Disassemble, Assemble, Install
Stub Shaft Removal
Stub Shaft Sleeve Assembly Installation
Torque Converter Assembly Removal
Torque Converter Installation
Torque Converter Seal Installation
Torque Converter Seal Removal
Transmission Fluid Cooler Pipe Fitting Seal Installation
Transmission Fluid Cooler Pipe Fitting Seal Removal
Transmission Fluid Pressure Switch Removal
Transmission Holding Fixture Assemble
Wire Harness Disconnect
Wiring Harness Assembly Connect
Wiring Harness Connection
Wiring Harness Removal
Electrical/Electronic Schematic Diagrams
Automatic Transmission Controls Schematics
Electrical/Electronic Specifications
Component Resistance
Transmission Fluid Temperature Sensor Specifications
General Diagnostic Information
Clutch Plate Diagnosis
Engine Coolant/Water in Transmission
Noise and Vibration Analysis
Mechanical Specifications
Clutch Plate Selection Specifications
End Play Specifications
Fastener Tightening Specifications
Fluid Capacity Specifications
Range Reference
Shift Solenoid Valve State and Gear Ratio
Transmission General Specifications
Other Specifications
Line Pressure
Shift Speed
Transmission Fluid Pressure Manual Valve Position Switch Logic
Transmission Range Switch Logic
Removal, Installation, and Replacement
1-2 Shift Solenoid Valve Replacement
2-3 Shift Solenoid Valve Replacement
Automatic Transmission Fluid Filter and Seal Replacement
Automatic Transmission Range Selector Lever Replacement
Control Valve Body Cover Gasket Replacement
Control Valve Body Cover Replacement
Control Valve Body Replacement
Floor Shift Control Cable Replacement
Front Wheel Drive Shaft Seal and Output Shaft Sleeve Replacement - Left Side
Front Wheel Drive Shaft Seal and Output Shaft Sleeve Replacement - Right Side
Intermediate/Fourth Servo Assembly Replacement
Low/Reverse Servo Assembly Replacement
Oil Feed Pipes Replacement
Oil Pan Replacement
Park/Neutral Position Switch Replacement
Pressure Control Solenoid Valve Replacement
Shift Control Cable Adjustment
Torque Converter Clutch Pulse Width Modulation Solenoid Replacement
Transmission Control Lever Knob Replacement
Transmission Control Module Replacement
Transmission Fluid Cooler Hose Replacement
Transmission Fluid Pressure Manual Valve Position Switch Replacement
Transmission Front Mount Replacement
Transmission Mount Replacement - Left Side
Transmission Rear Mount Replacement
Transmission Replacement
Vehicle Speed Sensor Replacement
Wiring Harness Replacement