Section 63 (Automatic Transmission Diagnosis - 4L80-E (Gasoline))
WARNING: This page does not describe the selected car, but rather 12 other vehicles, including the 2002 GMC Savana Special, 2002 GMC Savana Camper Special, 2002 GMC Savana, 2002 Chevrolet RV Cutaway, and 2002 Chevrolet Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
- Application
- Identification
- Description & Operation
- Introduction
- Adapt Function
- Transmission Components & Systems
- Electronic Components
- Torque Converter Clutch Solenoid Valve
- Pressure Control Solenoid Valve
- 1-2 Shift Solenoid Valve
- 2-3 Shift Solenoid Valve
- Transmission Fluid Pressure Manual Valve Position Switch Assembly
- Input Speed & Output Speed Sensors
- Transmission Fluid Temperature Sensor Assembly
- Transmission Range Switch
- Transmission 20-Way In-line Electrical Connector
- Powertrain Control Module
- Limp-In Mode
- Electronic Control System
- Shift Interlock System
- Trouble Shooting
- Performance Tests
- Road Test
- Notes
- Electrical Function Check
- Upshift Control & Torque Converter Clutch Apply
- Part Throttle Detent Downshift
- Full Throttle Detent Downshift
- Manual Downshifts
- Manual 4-3 Downshift
- Manual 4-2 Downshift
- Manual 4-1 Downshift
- Coasting Downshifts
- Manual Gear Range Selection
- Reverse
- Manual First
- Manual Second
- Manual Third
- Shift Speed Specifications
- Torque Converter Diagnosis
- Hydraulic Pressure Tests
- Clutch & Servo Air Checks
- Road Test
- Self-Diagnostic System
- Diagnostic Tests
- DTC P0218: Transmission Fluid OVERTEMPERATURE
- DTC P0502: VSS Circuit - Low Input
- DTC P0503: VSS Circuit - Intermittent
- DTC P0711: Transmission Fluid Temperature Sensor Circuit - Range/Performance
- DTC P0712: Transmission Fluid Temperature Sensor Circuit - Low Input
- DTC P0713: Transmission Fluid Temperature Sensor Circuit - High Input
- DTC P0716: Input Speed Sensor Circuit - Intermittent
- DTC P0717: ISS Sensor Circuit - Low Input
- DTC P0719: Brake Switch Circuit - Low Input
- DTC P0724: Brake Switch Circuit - High Input
- DTC P0730: Incorrect Gear Ratio
- DTC P0741: TCC System - Stuck Off
- DTC P0742: TCC System Stuck On
- DTC P0748: Pc Solenoid Circuit - Electrical Malfunction
- DTC P0751: 1-2 Shift Solenoid Valve - Performance
- DTC P0752: 1-2 Shift Solenoid Valve - Performance
- DTC P0753: 1-2 Shift Solenoid Valve - Electrical Malfunction
- DTC P0756: 2-3 Shift Solenoid Valve - Performance
- DTC P0757: 2-3 Shift Solenoid Valve Performance
- DTC P0758: 2-3 Shift Solenoid Valve - Electrical Malfunction
- DTC P1810: TFP Manual Valve Position Switch Assembly - Circuit Malfunction
- DTC P1860: TCC PWM Solenoid Circuit - Electrical Malfunction
- DTC P1870: Transmission Component Slipping
- Symptom Tests
- Component Tests
- Removal & Installation
- Torque Specifications
- Electronic Component Specifications
- Connector Identification
- Wiring Diagrams