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 MANUALSCHEVROLET1996CHEVY EXPRESS G3500, VAN PASSENGER EXTENDED, 4.3 WREPAIR AND DIAGNOSIS (SINGLE PAGE)TRANSMISSIONAUTOMATIC TRANSAUTOMATIC TRANSMISSION DIAGNOSIS - 4L80-E
1996 Chevrolet Chevy Express G3500, Van Passenger Extended, 4.3 W
Automatic Transmission Diagnosis - 4L80-E
1996 Chevrolet Chevy Express G3500, Van Passenger Extended, 4.3 WSECTION Automatic Transmission Diagnosis - 4L80-E
- Application
- Description
- Operation
- Trouble Shooting
- Electronic Self-Diagnostics
- Diagnostic Tests
- Notes
- Automatic Transmission Diagnosis - 4L80-E
- Using Diagnostic Tests & Wiring Diagrams
- On-Board Diagnostic (OBD) System Check
- P0218, Transmission Fluid OVERTEMP
- P0502, Vehicles Speed Sensor Circuit (Low Input)
- EEPROM Reprogramming
- P0560, System Voltage Malfunction
- P0712, Trans. Fluid Temperature (TFT) Sensor Circuit (Low Input)
- P0713, Trans. Fluid Temperature (TFT) Sensor Circuit (High Input)
- P0716, Input Speed Sensor Circuit Range/Performance Malfunction
- P0717, Input Speed Sensor Circuit No Signal
- P0719, Brake Switch Circuit Low Input (Switch Stuck On)
- P0722, Output Speed Sensor (OSS) Low Input
- P0723, Output Speed Sensor (OSS) Intermittent
- P0724, Brake Switch Circuit High Input (Switch Stuck Off)
- P0741, TCC Stuck Off
- P0742, TCC Stuck On
- P0748, Pressure Control Solenoid Electrical Malfunction
- P0751, 1-2 Shift Solenoid ("A") Performance Malfunction
- P0753, 1-2 Shift Solenoid ("A") Electrical Malfunction
- P0756, 2-3 Shift Solenoid ("B") Performance Malfunction
- P0758, 2-3 Shift Solenoid ("B") Electrical Malfunction
- P1810, Transmission Fluid Pressure (TFP) Position Switch Assembly Malfunction
- P1811, Maximum Adapt & Long Shift
- P1812, Transmission Fluid OVERTEMP
- P1860, TCC PWM Solenoid Electrical Malfunction
- P1870, Transmission Component Slipping
- P1871, Undefined Gear Ratio
- P1875, 4WD Low Circuit Malfunction
- Component Tests
- Technical Service Bulletins (TSB)
- Wiring Diagrams
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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.