GM Service Manual Online
For 1990-2009 cars only
Makes
🢒
Cadillac
🢒
2002
🢒
DeVille
🢒
Transmission/Transaxle
🢒 Automatic Transaxle - 4T80-E
Transmission/Transaxle
All Component Locator
Automatic Transmission Electronic Component Views
Component Location
Disassembled Views
All Description and Operation
Adapt Function
Automatic Transmission Electrical Connector Description
Definitions and Abbreviations
Dry Sump Oil System
Electronic Component Description
Transmission Component and System Description
Transmission General Description
Transmission General Information
Transmission Identification Information
Transmission Indicators and Messages
All Special Tools and Equipment
Special Tools
All Visual Identification
Automatic Transmission Inline Harness Connector End View
Automatic Transmission Internal Connector End Views
Automatic Transmission Related Connector End Views
Cleaning, Inspection, and Adjustment
Range Selector Lever Cable Adjustment
Torque Converter Clutch/Cruise Control Release Switch Adjustment
Diagnostic Procedures
Automatic Transmission Fluid Leaks
Buzz Noise or High Frequency Rattle Sound
Case Porosity Repair
Converter Ballooning
Delayed Park to Reverse/Drive Engagement
Diagnostic Starting Point - Automatic Transmission
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
Flex Plate/Torque Converter Vibration Test
Fluid Foaming
Fluid Leak Diagnosis
Forward Motion in N
Harsh Garage Shift or Engine Hesitation on Acceleration
Harsh Shifts
Inconsistent Shifts
Line Pressure Adapter and Gage Installation
Line Pressure Check
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 in All Ranges
Noise in First, Second, Third, or Fourth
Popping Noise
Powertrain On Board Diagnostic (OBD) System Check - Automatic Transmission
Range Selector Displays Incorrect Range
Road Test
Second Gear Starts
Shift Lever Indicates Wrong Gear
Shift Solenoid Leak Test
Soft Shifts
Soft Torque Converter Clutch Apply
Symptoms - Automatic Transmission
Third and Fourth Gears Only
Torque Converter Clutch Not Disengaging
Torque Converter Diagnosis
Transmission Fluid Check
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 (DTC) List/Type
Diagnostic Trouble Code (DTC) Type Definitions
DTC P0218
DTC P0502
DTC P0503
DTC P0711
DTC P0712
DTC P0713
DTC P0716
DTC P0717
DTC P0719
DTC P0724
DTC P0731
DTC P0732
DTC P0733
DTC P0734
DTC P0741
DTC P0742
DTC P0748
DTC P0751
DTC P0752
DTC P0756
DTC P0757
DTC P1811
DTC P1814
DTC P1820
DTC P1822
DTC P1823
DTC P1825
DTC P1842
DTC P1843
DTC P1845
DTC P1847
DTC P1860
DTC P1868
Electrical/Electronic Schematic Diagrams
Automatic Transmission Controls Schematics
Electrical/Electronic Specifications
Component Resistance
Transmission Fluid Temperature Sensor Specifications
General Diagnostic Information
Clutch Plate Diagnosis
Engine Coolant/Water in Transmission
Noise and Vibration Analysis
Scan Tool Data Definitions
Scan Tool Data List
Scan Tool Output Controls
Mechanical Specifications
Fastener Tightening Specifications
Fluid Capacity Specifications
Range Reference
Shift Solenoid Valve State and Gear Ratio
Transmission General Specifications
Other Specifications
Line Pressure
Shift Speed
Torque Converter Clutch Slip Speed
Transmission Fluid Pressure Manual Valve Position Switch Logic
Transmission Internal Mode Switch Logic
Removal, Installation, and Replacement
Automatic Transmission Fluid Pressure Test Hole Plug Replacement
Automatic Transmission Mount Bracket Replacement - Left Side
Automatic Transmission Range Selector Cable Replacement - Column
Automatic Transmission Range Selector Cable Replacement - Console
Case Cover Axle Seal Replacement - Left Side
Case Extension Axle Seal Replacement - Right Side
Case Extension Replacement
Control Valve Body Assembly Replacement
Detent Lever and Roller Assembly Replacement
Differential Carrier Replacement
Final Drive Assembly Replacement
Final Drive Internal Gear Replacement
Floor Shift Control Knob Replacement
Output Shaft Replacement
Parking Gear Replacement
Parking Pawl Replacement
Torque Converter Clutch/Cruise Control Release Switch Replacement
Torque Converter Cover Replacement
Transfer Oil Pump Inlet Screen and Pipe Seal Replacement
Transmission Brace Replacement
Transmission Control Replacement
Transmission Fluid Cooler Hose/Pipe Replacement
Transmission Fluid Level Indicator Replacement
Transmission Mount Replacement - Left Side
Transmission Rear Mount Bracket Replacement
Transmission Rear Mount Replacement
Transmission Replacement
Vehicle Speed Sensor Replacement