GM Service Manual Online
For 1990-2009 cars only
Makes
🢒
Chevrolet
🢒
2002
🢒
Express
🢒
Transmission/Transaxle
🢒
Automatic Transmission - 4L80-E
🢒 Transmission Overhaul
In order to overhaul, follow the sequence below.
Torque Converter Assembly Removal
Torque Converter End Play Inspection
Transmission Holding Fixture Installation
Transmission Fluid Draining
Input and Output Speed Sensor Assembly Removal
Case Extension Assembly Removal
Transmission Fluid Pan Removal
Transmission Fluid Filter Assembly Removal
Transmission Wiring Harness Removal
Control Valve Body Assembly Removal
Manual 2-1 Band Servo Assembly Removal
Low and Reverse Band Servo Assembly Removal
Low and Reverse Band Servo Piston Pin Check
Manual Shift Shaft Removal
Parking System Components Removal
Front End Play Check
Rear Unit End Play Check
Transmission Fluid Pump Removal
Overdrive Assembly Removal
4th Clutch Assembly Removal
Forward Clutch Assembly Removal
Direct Clutch Assembly Removal
Manual 2-1 Band Assembly Removal
Intermediate Clutch Assembly Removal
Center Support and Gear Unit Assembly Removal
Low and Reverse Band Removal
Output Shaft Seal Removal
Transmission Case Inspection
Output Shaft Seal Installation
Parking System Components Installation
Low and Reverse Band and Output Shaft Thrust Washer Installation
Center Support and Gear Unit Assembly Disassemble
Output Carrier Pinion End Play Measurement
Reaction Carrier Pinion End Play
Reaction Carrier Assemble
Center Support Assembly Disassemble
Center Support Assembly Reconditioning Repair
Center Support Assembly Assemble
Center Support and Gear Unit Assembly Assemble
Center Support and Gear Unit Assembly Installation
Rear Unit End Play Check
Center Support Bolt and Transmission Fluid Cooler Pipe Fitting Installation
Intermediate Clutch Assembly Installation
Intermediate Clutch Piston Travel Check
Manual 2-1 Band Assembly Installation
Direct Clutch Assembly Disassemble
Direct Clutch Assembly Assemble
Direct Clutch Assembly Installation
Direct Clutch Piston Travel Check
Forward Clutch Assembly Disassemble
Forward Clutch Assembly Assemble
Forward Clutch Piston Travel Check
Forward Clutch Hub Assemble
Forward Clutch Assembly Installation
4th Clutch Assembly Disassemble
4th Clutch Assembly Assemble
4th Clutch Piston Travel Check
4th Clutch Assembly Installation
Overrun Clutch Assembly Disassemble
Overrun Clutch Assembly Assemble
Overrun Clutch Piston Travel Check
Overdrive Carrier Pinion End Play Check
Overdrive Carrier Assembly Disassemble
Overdrive Carrier Assembly Assemble
Turbine Shaft Disassemble
Turbine Shaft Assemble
Overdrive Carrier Assemble
Turbine Shaft and Overdrive Carrier Installation
4th Clutch Plate Installation
Transmission Fluid Pump Disassemble
Transmission Fluid Pump Cover Disassemble
Transmission Fluid Pump Cover Assemble
Transmission Fluid Pump Body to Gear Face Clearance Check
Transmission Fluid Pump Body Disassemble
Transmission Fluid Pump Body Flatness Check
Transmission Fluid Pump Body Assemble
Transmission Fluid Pump Assemble
Transmission Fluid Pump Installation
Front End Play Check
Manual 2-1 Band Servo Assembly Disassemble
Manual 2-1 Band Servo Assembly Assemble
Manual 2-1 Band Servo Assembly Installation
Low and Reverse Band Servo Piston Pin Check
Low and Reverse Band Servo Assembly Disassemble
Low and Reverse Band Servo Assembly Assemble
Low and Reverse Band Servo Assembly Installation
3rd and 4th Clutch Accumulator Housing Removal
3rd and 4th Clutch Accumulator Housing Disassemble
3rd and 4th Clutch Accumulator Housing Assemble
Control Valve Body Assembly Disassemble
Control Valve Body Cleaning and Inspection
Control Valve Body Assembly Assemble
3rd and 4th Clutch Accumulator Housing Installation
Control Valve Body Assembly Installation
Wiring Harness Installation
Transmission Fluid Filter Assembly Installation
Transmission Fluid Pan Installation
Input and Output Speed Sensor Assembly Installation
Case Extension Assembly Installation
Torque Converter Assembly Installation
Holding Fixture Removal