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 CARSECTION 478 (AUTOMATIC TRANSAXLE - 4T65-E - OVERHAUL)
2006 Chevrolet Cobalt SS, 4D Sedan, Standard
Section 478 (Automatic Transaxle - 4T65-E - Overhaul)
2006 Chevrolet Cobalt SS, 4D Sedan, StandardSECTION Section 478 (Automatic Transaxle - 4T65-E - Overhaul)
WARNING: This page does not describe the selected car, but rather 13 other vehicles, including the 2006 Saturn Relay, 2006 Pontiac Montana SV6, 2006 Pontiac Grand Prix, 2006 Pontiac G6, and 2006 Chevrolet Uplander. However, it is still accessible from the selected car via links, so may be relevant.
- Specifications
- Component Locator
- Repair Instructions
- Torque Converter Assembly Removal
- Transmission Support Fixture Assemble
- Transfer Case Removal
- Reverse Servo Removal
- Forward Servo Removal
- Pan and Filter Assembly Removal
- Transmission Fluid Filter Inspection
- Accumulator Assembly and 2-1 Band Servo Removal
- Control Valve Body Cover and Gaskets Disassemble
- Wiring Harness Removal
- Oil Pump Removal
- Control Valve Body Assembly Removal
- Oil Pump Drive Shaft Removal
- Vehicle Speed Sensor Removal
- Output Shaft Removal
- Front Differential Carrier End Play Check (FWD Only)
- Manual Valve Link and Oil Dam Removal
- Drive Axle Oil Seal Removal - Left Side
- Case Cover Removal
- Fourth Clutch Components Removal
- Drive Link Stretch Check
- Drive Sprocket, Driven Sprocket and Drive Link Removal
- Driven Sprocket Support Assembly Removal
- Second Clutch and Input Clutch Removal
- Reverse Band Removal
- Reverse Reaction Drum Removal
- Case Extension Assembly Removal
- Differential Carrier and Components Removal
- Input and Reaction Carrier Removal
- Reaction Sun Gear and Manual 2-1 Band Removal
- 1-2 Support Drum and Forward Band Removal
- Differential Carrier Internal Gear Removal
- Manual Shift Shaft Position (Internal Mode) Switch and Parking System Components Removal
- Case Assembly Inspection
- Case Components Disassemble
- Case Components Assemble
- Torque Converter Oil Seal Removal
- Drive Sprocket Support Removal
- Drive Sprocket Support Assemble
- Torque Converter Oil Seal Assemble
- Manual Shift Shaft Position (Internal Mode) Switch and Parking System Components Installation
- Differential Carrier Internal Gear Assemble
- Differential Carrier Inspection (FWD Only)
- Differential Carrier Disassemble (FWD Only)
- Differential Carrier Assemble (FWD Only)
- Vehicle Speed Sensor Reluctor Wheel Disassemble (FWD Only)
- Vehicle Speed Sensor Reluctor Wheel Assemble (FWD Only)
- Differential Carrier Components Assemble (FWD Only)
- Case Extension Assemble (FWD Only)
- Forward Band Assemble
- 1-2 Support Roller Clutch Disassemble
- 1-2 Support Roller Clutch Assemble
- 1-2 Support Roller Clutch Functional Check
- 1-2 Support Drum Assemble
- 2-1 Manual Band Assemble
- Reaction Sun Gear and Drum Assemble
- Input and Reaction Carrier Pinion End Play Check
- Input and Reaction Carrier Assemble
- Reverse Reaction Drum Assemble
- Input and Third Clutch Pawl Disassemble
- Input and Third Clutch Pawl Assemble
- Input and Third Clutch Pawl Functional Check
- Input Clutch and Third Clutch Disassemble
- Input Clutch Housing Assembly Inspection
- Input Clutch Housing Ball Check Valve Disassemble
- Input Clutch Housing Ball Check Valve Assemble
- Input Clutch and Third Clutch Assemble
- Input Clutch and Third Clutch Functional Air Check
- Input Clutch Housing Oil Seal Rings Assemble
- Input Clutch Housing, Input Clutch Pawl and Third Clutch Pawl Assemble
- Input Clutch Housing End Play Check (FWD Only)
- Second Clutch Disassemble
- Second Clutch Housing Assembly Inspection
- Second Clutch Housing Ball Check Valve Disassemble
- Second Clutch Housing Ball Check Valve Assemble
- Second Clutch Assemble
- Reverse Band Assemble
- Driven Sprocket Support Components Disassemble
- Driven Sprocket Support Components Inspection
- Driven Sprocket Support Bearing Disassemble
- Driven Sprocket Support Bearing Assemble
- Driven Sprocket Support Components Assemble
- Fourth and Second Clutch Functional Air Check
- Second, Input, Third and Sprag Clutches Assemble
- Driven Sprocket Support Assemble
- Drive Sprocket and Turbine Shaft Disassemble
- Drive Sprocket and Turbine Shaft Assemble
- Drive and Driven Sprocket Components Assemble
- Fourth Clutch Components Assemble
- Case Cover Components Disassemble (Without Touch Activated Power)
- Case Cover Components Disassemble (With Touch Activated Power)
- Case Cover Components Inspection (Without Touch Activated Power)
- Case Cover Components Inspection (With Touch Activated Power)
- Case Cover Bearing Disassemble
- Case Cover Bearing Assemble
- Drive Shaft Oil Seal Assemble - Left Side
- Case Cover Components Assemble (Without Touch Activated Power)
- Case Cover Components Assemble (With Touch Activated Power)
- Case Cover and Gaskets Assemble
- Manual Valve Link and Oil Dam Assemble
- Differential Carrier End Play Check (FWD Only)
- Drive Shaft Oil Seal Disassemble - Right Side (FWD Only)
- Drive Shaft Oil Seal Assemble - Right Side (FWD Only)
- Vehicle Speed Sensor Assemble (FWD Only)
- Control Valve Body Clean
- Control Valve Body Inspection
- Control Valve Body Disassemble (Without Touch Activated Power)
- Control Valve Body Disassemble (With Touch Activated Power)
- Control Valve Body Assemble (Without Touch Activated Power)
- Control Valve Body Assemble (With Touch Activated Power)
- Oil Pump Drive Shaft Assemble
- Control Valve Body and Spacer Plate Assemble
- Oil Pump Components Disassemble
- Oil Pump Components Assemble
- Wiring Harness Assemble
- Control Valve Body Cover and Gasket Assemble
- Thermo Element Adjustment
- 2-1 Manual Band Servo Disassemble
- 2-1 Manual Band Servo Assemble
- Accumulator Components Disassemble
- Accumulator Components Assemble
- Accumulator Assembly, 2-1 Band Servo Assemble
- Oil Pan and Filter Assemble
- Forward Band Servo Components Disassemble
- Forward Band Servo Assemble
- Reverse Band Servo Components Disassemble
- Reverse Band Servo Assemble
- Transmission to Transfer Case End Play Check (F4WD Only)
- Transfer Case Installation
- Output Shaft Assemble
- Transmission Holding Fixture Disassemble
- Torque Converter Inspection
- Torque Converter Assemble
- Description and Operation
- Automatic Transmission Hydraulic Diagrams
- Park or Neutral - Engine Running (Park - Without Touch Activated Power)
- Notes
- Pressure Regulator Valve (313)
- Actuator Feed Limit Valve (414)
- Pressure Control (PC) Solenoid Valve (322)
- Torque Signal Regulator Valve (321)
- Line Pressure Relief Valve (324)
- Manual Valve (404)
- Transmission Fluid Pressure (TFP) Manual Valve Position Switch Assembly (34)
- 1-2, 3-4 Shift Solenoid Valve (315A)
- 2-3 Shift Solenoid Valve (315B)
- 1-2 Shift Valve (318)
- 2-3 Shift Valve (357)
- 1-2, 2-3 and 3-4 Accumulator Valves (350, 344, 341)
- 1-2, 2-3 and 3-4 Accumulator Assemblies
- Pressure Regulator Valve (313) (Torque Converter/Cooler and Lube Circuits)
- TCC Control Valve (335)
- Park - Engine Running - Without Touch Activated Power - A/T System Hydraulic Diagram
- Park or Neutral - Engine Running (Park - With Touch Activated Power)
- Notes
- Pressure Regulator Valve (313)
- Actuator Feed Limit Valve (414)
- Pressure Control (PC) Solenoid Valve (322)
- Torque Signal Regulator Valve (321)
- Line Pressure Relief Valve (324)
- Manual Valve (404)
- Transmission Fluid Pressure (TFP) Manual Valve Position Switch Assembly (34)
- 1-2, 3-4 Shift Solenoid Valve (315A)
- 2-3 Shift Solenoid Valve (315B)
- 1-2 Shift Valve (318)
- 2-3 Shift Valve (357)
- 1-2, 2-3 and 3-4 Accumulator Valves (350, 344, 341)
- 1-2, 2-3 and 3-4 Accumulator Assemblies
- Pressure Regulator Valve (313) (Torque Converter/Cooler and Lube Circuits)
- TCC Control Valve (335)
- Park - Engine Running - With Touch Activated Power - A/T System Hydraulic Diagram
- Park or Neutral - Engine Running (Neutral-Without Touch Activated Power)
- Park or Neutral - Engine Running (Neutral - With Touch Activated Power)
- Reverse (Without Touch Activated Power)
- Notes
- Pressure Regulator Valve (313)
- Manual Valve (404)
- Number 5 Ball Check Valve (373)
- Reverse Servo Assembly (39-40)
- Reverse Band Assembly (615)
- Input Clutch
- Pressure Regulator Valve (313) (Torque Converter/Cooler and Lube Circuits)
- TCC Control Valve (335)
- Reverse - Without Touch Activated Power - A/T System Hydraulic Diagram
- Reverse (With Touch Activated Power)
- Notes
- Pressure Regulator Valve (313)
- Manual Valve (404)
- Number 5 Ball Check Valve (373)
- Reverse Servo Assembly (39-40)
- Reverse Band Assembly (615)
- Input Clutch
- Pressure Regulator Valve (313) (Torque Converter/Cooler and Lube Circuits)
- TCC Control Valve (335)
- Reverse - With Touch Activated Power - A/T System Hydraulic Diagram
- Overdrive Range, First Gear (Without Touch Activated Power)
- Notes
- Manual Valve (404)
- Number 6 Ball Check Valve (372)
- Forward Servo Assembly (15-22)
- Forward Band Assembly (688)
- 1-2 Shift Solenoid (SS) Valve (315A)
- 2-3 Shift Solenoid (SS) Valve (315B)
- Input Clutch
- 1-2 Support Roller Clutch
- Overdrive Range, First Gear - Without Touch Activated Power - A/T System Hydraulic Diagram
- Overdrive Range, First Gear (With Touch Activated Power)
- Notes
- Manual Valve (404)
- Number 6 Ball Check Valve (372)
- Forward Servo Assembly (15-22)
- Forward Band Assembly (688)
- 1-2 Shift Solenoid (SS) Valve (315A)
- 2-3 Shift Solenoid (SS) Valve (315B)
- Input Clutch
- 1-2 Support Roller Clutch
- Overdrive Range, First Gear - With Touch Activated Power - A/T System Hydraulic Diagram
- Overdrive Range, Second Gear (Without Touch Activated Power)
- Notes
- 1-2, 3-4 Shift Solenoid (SS) Valve (315A)
- 1-2 Shift Valve (318)
- Number 2 Ball Check Valve (372)
- Second Clutch
- Input Clutch
- Input Sprag Clutch
- Forward Band
- 1-2 Support Roller Clutch
- 1-2 Accumulator
- 1-2 Accumulator Valve
- TCC Control Pulse Width Modulated (PWM) Solenoid Valve
- Torque Converter Clutch
- Transmission Fluid Pressure (TFP) Manual Valve Position Switch
- Overdrive Range, Second Gear - Without Touch Activated Power - A/T System Hydraulic Diagram
- Overdrive Range, Second Gear (With Touch Activated Power)
- Notes
- 1-2, 3-4 Shift Solenoid (SS) Valve (315A)
- 1-2 Shift Valve (318)
- Number 2 Ball Check Valve (372)
- Second Clutch
- Input Clutch
- Input Sprag Clutch
- Forward Band
- 1-2 Support Roller Clutch
- 1-2 Accumulator
- 1-2 Accumulator Valve
- TCC Control Pulse Width Modulated (PWM) Solenoid Valve
- Torque Converter Clutch
- Transmission Fluid Pressure (TFP) Manual Valve Position Switch
- Overdrive Range, Second Gear - With Touch Activated Power - A/T System Hydraulic Diagram
- Overdrive Range, Third Gear - Torque Converter Clutch Not Applied (Without Touch Activated Power)
- Notes
- 2-3 Shift Solenoid (SS) Valve (315)
- Number 9 Ball Check Valve (372)
- Number 4 Ball Check Valve (372)
- 2-3 Shift Valve (357)
- Third Clutch
- Third Roller Clutch
- Input Clutch
- Forward Band
- 1-2 Support Roller Clutch
- 2-3 Accumulator
- 2-3 Accumulator Valve
- Torque Converter Clutch
- Transmission Fluid Pressure (TFP) Manual Valve Position Switch
- Overdrive Range, Third Gear - Torque Converter Clutch (TCC) Not Applied - Without Touch Activated Power - A/T System Hydraulic Diagram
- Overdrive Range, Third Gear - Torque Converter Clutch Not Applied (With Touch Activated Power)
- Notes
- 2-3 Shift Solenoid (SS) Valve (315)
- Number 9 Ball Check Valve (372)
- Number 4 Ball Check Valve (372)
- 2-3 Shift Valve (357)
- Third Clutch
- Third Roller Clutch
- Input Clutch
- Forward Band
- 1-2 Support Roller Clutch
- 2-3 Accumulator
- 2-3 Accumulator Valve
- Torque Converter Clutch
- Transmission Fluid Pressure (TFP) Manual Valve Position Switch
- Overdrive Range, Third Gear - Torque Converter Clutch (TCC) Not Applied - With Touch Activated Power - A/T System Hydraulic Diagram
- Overdrive Range, Fourth Gear - Torque Converter Clutch Not Applied (Without Touch Activated Power)
- Notes
- 1-2, 3-4 Shift Solenoid (SS) Valve (315)
- 1-2 Shift Valve (318)
- 3-4 Shift Valve (362)
- Fourth Clutch
- Third Clutch
- Third Roller Clutch
- Second Clutch
- Forward Band
- 1-2 Support Roller Clutch
- 3-4 Accumulator
- 3-4 Accumulator Valve
- Torque Converter Clutch
- Transmission Fluid Pressure (TFP) Manual Valve Position Switch
- Overdrive Range, Fourth Gear - TCC Not Applied - Without Touch Activated Power - A/T System Hydraulic Diagram
- Overdrive Range, Fourth Gear - Torque Converter Clutch Not Applied (With Touch Activated Power)
- Notes
- 1-2, 3-4 Shift Solenoid (SS) Valve (315)
- 1-2 Shift Valve (318)
- 3-4 Shift Valve (362)
- Fourth Clutch
- Third Clutch
- Third Roller Clutch
- Second Clutch
- Forward Band
- 1-2 Support Roller Clutch
- 3-4 Accumulator
- 3-4 Accumulator Valve
- Torque Converter Clutch
- Transmission Fluid Pressure (TFP) Manual Valve Position Switch
- Overdrive Range, Fourth Gear - TCC Not Applied - With Touch Activated Power - A/T System Hydraulic Diagram
- Overdrive Range, Fourth Gear - Torque Converter Clutch Applied (Without Touch Activated Power)
- Notes
- TCC Control (PWM) Solenoid
- TCC Regulator Valve
- TCC Control Valve
- Torque Converter Clutch
- Transmission Fluid Pressure (TFP) Manual Valve Position Switch
- Cooler Check Valve
- Number 1 Ball Check Valve (372)
- Converter Clutch Blow-off Valve
- Overdrive Range, Fourth Gear - TCC Applied - Without Touch Activated Power - A/T System Hydraulic Diagram
- Overdrive Range, Fourth Gear - Torque Converter Clutch Applied (With Touch Activated Power)
- Notes
- TCC Control (PWM) Solenoid
- TCC Regulator Valve
- TCC Control Valve
- Torque Converter Clutch
- Transmission Fluid Pressure (TFP) Manual Valve Position Switch
- Cooler Check Valve
- Number 1 Ball Check Valve (372)
- Converter Clutch Blow-off Valve
- Overdrive Range, Fourth Gear - TCC Applied - With Touch Activated Power - A/T System Hydraulic Diagram
- Overdrive Range, 4-3 Downshift - Torque Converter Clutch Not Applied (Without Touch Activated Power)
- Notes
- Pressure Control (PC) Solenoid
- Pressure Regulator Valve
- TCC Control (PWM) Solenoid Valve
- TCC Control Valve
- Transmission Fluid Pressure (TFP) Manual Valve Position Switch
- 1-2, 3-4 Shift Solenoid (SS) Valve (315)
- 3-4 Shift Valve (362)
- Fourth Clutch
- 3-4 Accumulator
- 3-4 Accumulator Valve
- Overdrive Range, 4-3 Downshift - TCC Not Applied - Without Touch Activated Power - A/T System Hydraulic Diagram
- Overdrive Range, 4-3 Downshift - Torque Converter Clutch Not Applied (With Touch Activated Power)
- Notes
- Pressure Control (PC) Solenoid
- Pressure Regulator Valve
- TCC Control (PWM) Solenoid Valve
- TCC Control Valve
- Transmission Fluid Pressure (TFP) Manual Valve Position Switch
- 1-2, 3-4 Shift Solenoid (SS) Valve (315)
- 3-4 Shift Valve (362)
- Fourth Clutch
- 3-4 Accumulator
- 3-4 Accumulator Valve
- Overdrive Range, 4-3 Downshift - TCC Not Applied - With Touch Activated Power - A/T System Hydraulic Diagram
- Drive Range, Manual Third (from Overdrive Range) (Without Touch Activated Power)
- Manual Third Gear (With Touch Activated Power)
- Drive Range, Manual Second (from Drive, Manual Third) (Without Touch Activated Power)
- Notes
- Manual Valve (404)
- Number 8 Ball Check Valve (372)
- 2-3 Shift Valve (357)
- Manual 2-1 Servo Assembly (104-115)
- Number 4 Ball Check Valve (372)
- 2-3 Shift Solenoid (SS) Valve (315)
- 3-2 Manual Downshift Valve (356)
- Pressure Control (PC) Solenoid
- Torque Converter Clutch
- Drive Range, Manual 2nd - from Drive, Manual 3rd - Without Touch Activated Power - A/T System Hydraulic Diagram
- Manual Second Gear (With Touch Activated Power)
- Notes
- Manual Valve (404)
- Number 8 Ball Check Valve (372)
- 2-3 Shift Valve (357)
- 3-2 Manual Downshift Valve (356)
- Manual 2-1 Servo Assembly (104-115)
- Number 4 Ball Check Valve (372)
- 2-3 Shift Solenoid (SS) Valve (315)
- Pressure Control (PC) Solenoid
- Torque Converter Clutch
- Drive Range, Manual 2nd - from Drive, Manual 3rd - With Touch Activated Power - A/T System Hydraulic Diagram
- Drive Range, Manual First (from Drive, Manual Second) (Without Touch Activated Power)
- Notes
- Manual Valve (404)
- Number 7 Ball Check Valve (372)
- 1-2 Shift Valve (318)
- Lo Blow Off Valve (407)
- Number 4 Ball Check Valve (372)
- 1-2, 3-4 Shift Solenoid (SS) Valve (315)
- Number 2 Ball Check Valve (372)
- Pressure Regulator Valve
- Drive Range, Manual 1st - from Drive, Manual 2nd - Without Touch Activated Power - A/T System Hydraulic Diagram
- Manual First Gear (With Touch Activated Power)
- Notes
- Manual Valve (404)
- Number 7 Ball Check Valve (372)
- 1-2 Shift Valve (318)
- Lo Blow Valve (443)
- Number 4 Ball Check Valve (372)
- 1-2, 3-4 Shift Solenoid (SS) Valve (315)
- Number 2 Ball Check Valve (372)
- Drive Range, Manual 1st - from Drive, Manual 2nd - With Touch Activated Power - A/T System Hydraulic Diagram
- Park or Neutral - Engine Running (Park - Without Touch Activated Power)
- 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:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.