GM Service Manual Online
For 1990-2009 cars only
Makes
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Cadillac
🢒
1997
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DeVille
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Transmission/Transaxle
🢒 Automatic Transaxle - 4T80-E
Transmission/Transaxle
All Component Locator
Automatic Transmission Components
Transmission Component Location
All Description and Operation
Electrical Connector
Electronic Component Description
Using Service Diagnostics
All Special Tools and Equipment
Special Tools
All Visual Identification
Automatic Transmission Electronic Component Views
Automatic Transmission Inline Harness Connector End View
Transmission Identification Information
Cleaning, Inspection, and Adjustment
Park Lock Cable Adjustment
Park Lock Cable Replacement
Range Selector Lever Cable Adjustment
Diagnostic Procedures
Buzz Noise or High Frequency Rattle Sound
Converter Ballooning
Delayed Park to Reverse/Drive Engagement
Does Not Stay in Park
Early Torque Converter Clutch Engagement
Engine Stall
Engine Starts in Gear
Extended or Delayed Upshifts
Final Drive Noise or Hum Noise
Fluid Foaming
Forward Motion in N
Harsh Shifts
Inconsistent Shifts
Leak at Bottom Pan
Leak at Case Extension
Leak at Converter Seal
Leak at Cooler Connectors
Leak at Drive Axle Seal
Leak at Electrical Connector
Leak at Fluid Fill Indicator
Leak at Manual Shift
Leak at Vehicle Speed Sensor
Loss of Drive
Loss of Power
Low Line Pressure
No Engine Braking
No Engine Braking in D1
No First Gear
No First Gear D2, D3, D4
No Fourth Gear
No Gear Selection
No Overrun Braking in D2
No Overrun Braking in D3
No Reverse
No Second Gear D2, D3
No Third Gear - D3
No Torque Converter Clutch Apply
No Torque Multiplication
Noise
Noise in All Ranges
Noise in First, Second, Third, or Fourth
Popping Noise
Second Gear Starts
Shift Lever Indicates Wrong Gear
Soft Shifts
Soft Torque Converter Clutch Apply
Third and Fourth Gears Only
Torque Converter Clutch Not Disengaging
Transaxle Seized
Transmission Fluid Cooler Flushing and Flow Test
Transmission Slips in Reverse
Vibration Diagnosis
Whine Noise Varying with RPM or Fluid Pressure
Whine/Growl Noise That Changes with Vehicle Speed
Diagnostic Trouble Codes
Diagnostic Trouble Code Identification
DTC P0218 Transmission Fluid Overtemperature
DTC P0502 Vehicle Speed Sensor (VSS) Circuit Low Input
DTC P0503 Vehicle Speed Sensor (VSS) Circuit Intermittent
DTC P0711 TFT Sensor Circuit Range/Performance
DTC P0712 Transmission Fluid Temperature (TFT) Sensor Circuit Low Input
DTC P0713 Transmission Fluid Temperature (TFT) Sensor Circuit High Input
DTC P0716 Input Speed Sensor CKT Range/Performance
DTC P0717 Input Speed Sensor Circuit No Signal
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 Pressure Control Solenoid Circuit Electrical
DTC P0751 1-2 Shift Solenoid Valve Performance
DTC P0753 1-2 Shift Solenoid Circuit Electrical
DTC P0756 2-3 (B) Shift Solenoid Performance
DTC P0758 2-3 (B) Shift Solenoid Electrical
DTC P1810 TFP Valve Position Switch Circuit
DTC P1811 Maximum Adapt and Long Shift
DTC P1814 Torque Converter Overstressed
DTC P1860 TCC PWM Solenoid Circuit Electrical
Electrical/Electronic Schematic Diagrams
Automatic Transmission Controls Schematics
Automatic Transmission Schematic Icons
Automatic Transmission Schematic References
General Diagnostic Information
Automatic Transmission Wiring Harness Check
Clutch Plate Diagnosis
Data Link Connector Replacement
Electrical/Garage Shift Procedure
Engine Coolant in Transaxle
Flex Plate/Torque Converter Vibration Test
Fluid Leak Diagnosis and Repair
Functional Test
Leak Inspection Points
Line Pressure Adapter and Gage Installation
Line Pressure Check
Powertrain Control Module and Input Information
Powertrain Control Module Wiring Harness and Connectors
Road Test
Scan Tool Data Definitions
Torque Converter Clutch Evaluation and Diagnosis
Torque Converter Clutch Shudder
Traction Control (TRAC OFF) Switch
Transmission Cooler Flushing
Transmission Fluid Check
Transmission Fluid Pressure Manual Valve Position Switch Resistance Check
Transmission Scan Tool Data Values
General Information
Abbreviations and Meanings
Adapt Function
Component and System Description
Dry Sump Oil System
General Description
General Service Information
Mechanical Specifications
Fastener Tightening Specifications
Shift Solenoid Valve State and Gear Ratio
Other Specifications
Component Resistance
Fluid Capacity Specifications
Line Pressure
Range Reference
Shift Speed
Removal, Installation, and Replacement
Brake Transmission Shift Interlock Solenoid Replacement
Case Extension Axle Seal Replacement - Right Side
Control Valve Body Assembly Replacement
Final Drive Assembly Replacement
Oil Pan Replacement
Park/Neutral Position Switch Replacement
Parking Gear Replacement
Shift Cable Replacement
Torque Converter Cover Replacement
Transfer Oil Pump Inlet Screen and Pipe Seal Replacement
Transmission Control Replacement
Transmission Fluid Filter Replacement
Transmission Fluid Level Indicator Replacement
Transmission Mount Replacement
Transmission Replacement
Vehicle Speed Sensor Replacement