GM Service Manual Online
For 1990-2009 cars only
Makes
🢒
Chevrolet
🢒
2003
🢒
Avalanche - 4WD
🢒
Transmission/Transaxle
🢒 Automatic Transmission - 4L80-E/4L85-E
Transmission/Transaxle
All Component Locator
Automatic Transmission Electronic Component Views
Component Location
Disassembled Views
All Description and Operation
Automatic Transmission Inline 20-Way Connector Description
Definitions and Abbreviations
Electronic Component Description
Transmission Adaptive Functions
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 20-Way Connector End View
Automatic Transmission Internal Connector End Views
Automatic Transmission Related Connector End Views
Cleaning, Inspection, and Adjustment
Park/Neutral Position Switch Adjustment
Range Selector Lever Cable Adjustment
Diagnostic Procedures
Automatic Transmission Fluid Leaks
Case Extension Bearing/Seal Failed
Case Porosity Repair
Converter Ballooning
Delayed Shift 1 to 2
Diagnostic Starting Point - Automatic Transmission
Diagnostic System Check - Automatic Transmission
Difficult to Shift Out of Park
Does Not Stay in Park
Engine Stall
Engine Stall in Neutral
Engine Starts in Gear
Erratic Shift Quality
First and Fourth Gear Only - D4
First and Second Gear Only - D4
First Gear Only - D4
Flex Plate/Torque Converter Vibration Test
Fluid Foaming
Fluid Leak Diagnosis
Forward Motion in Neutral
Fourth Gear Starts
Harsh Shift 3 to 4
Harsh Shift 4 to 3
Harsh Shift D to R
Harsh Shift D4 to D3, D2, or D1
Harsh Shifts
High Line Pressure
Inaccurate Shift Points
Inadequate Lubrication
Inadequate Lubrication at Low Line or Heavy Loads
Incorrect Torque Converter Clutch Apply or Release
Line Pressure Check
Loss of Drive
Loss of Power
Low Line Pressure
No D2 to D1
No D3 to D2
No Engine Braking - D1
No Engine Braking - D2
No Engine Braking - D3
No First Gear - D1
No First Gear - D2
No First Gear - D3
No First Gear - D4
No Fourth Gear - D4
No Gear Selection
No Overrun Braking - D1
No Overrun Braking - D2
No Overrun Braking - D3
No Park
No Reverse
No Second Gear - D1
No Second Gear - D2
No Second Gear - D3
No Second Gear - D4
No Second Gear Engine Braking - D2
No Third Gear - D3
No Third Gear - D4
No Torque Converter Clutch Apply
No Torque in Reverse and Third
No Torque in Second Gear
No Torque Multiplication
Noise
Oil Out the Vent Tube
Range Selector Displays Incorrect Range
Remains in Park
Road Test
Second and Third Gear Only - D4
Second Gear Only - D4
Second Gear Starts
Shift Lever Indicates Wrong Gear
Shift Solenoid Leak Test
Soft Shift 2 to 1
Soft Shift 2 to 3
Soft Shift 3 to 2
Soft Shift D3 to D2
Soft Shift into R
Soft Shift R to D
Soft Shifts
Soft Torque Converter Clutch Apply
Third and Fourth Gear Only - D4
Third Gear Starts
Torque Converter Clutch Slipping
Torque Converter Clutch Stuck On
Torque Converter Diagnosis
Tow/Haul Switch/Indicator Always On or Inoperative
Transmission Fluid Check
Transmission Fluid Cooler Flushing and Flow Test
Transmission Overheats
Transmission Overheats at WOT
Transmission Slips
Vibration
Diagnostic Trouble Codes
Diagnostic Trouble Code (DTC) List/Type
Diagnostic Trouble Code (DTC) Type Definitions
DTC B2722
DTC P0218
DTC P0502
DTC P0503
DTC P0706
DTC P0711
DTC P0712
DTC P0713
DTC P0716
DTC P0717
DTC P0719
DTC P0724
DTC P0730
DTC P0741
DTC P0742
DTC P0748
DTC P0751
DTC P0752
DTC P0753
DTC P0756
DTC P0757
DTC P0758
DTC P0894
DTC P1810
DTC P1860
DTC P1875
Symptoms - Automatic Transmission
Electrical/Electronic Schematic Diagrams
Automatic Transmission Controls Schematics
Automatic Transmission Schematic Icons
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
Transmission Fluid Pressure Manual Valve Position Switch Logic
Transmission Range Switch Logic
Removal, Installation, and Replacement
Accumulator Housing Replacement
Automatic Transmission Fluid and Filter Replacement
Case Extension Assembly Replacement
Forward Servo Replacement
Input Speed Sensor Replacement
Manual Shift Shaft Seal Replacement
Output Speed Sensor Replacement
Park Pawl and Actuator Replacement
Park/Neutral Position Switch Replacement
Pressure Regulator Valve Replacement
Propeller Shaft Front Slip Yoke Oil Seal Replacement
Range Selector Lever Cable Bracket Replacement
Range Selector Lever Cable Replacement
Reverse Servo Replacement
Torque Converter Clutch Valve and Spring Replacement
Transmission Fluid Auxiliary Cooler Replacement
Transmission Fluid Cooler Hose/Pipe Quick-Connect Fitting Disconnection and Connection
Transmission Fluid Cooler Hose/Pipe Replacement
Transmission Fluid Filler Tube and Seal Replacement
Transmission Mount Replacement
Transmission Replacement
Transmission Vent Hose Replacement
Valve Body and Pressure Switch Replacement