Buick LeSabre 2000-2005 4T60 Transmission Transmission Specifications
Buick LeSabre 2000-2005

Buick LeSabre 2000-2005 4T60 Transmission Specifications

This document provides a detailed overview of the 4T60 transmission specifications for the 2000-2005 Buick LeSabre. It includes critical technical details such as gear ratios, torque capacity, fluid requirements, and maintenance intervals. The specifications are essential for understanding the transmission's performance, ensuring proper maintenance, and diagnosing potential issues. Designed to assist automotive enthusiasts, technicians, and DIY repairers, this guide offers valuable insights into the transmission's design and functionality. Whether you're performing routine maintenance, troubleshooting, or considering upgrades, this comprehensive resource ensures you have the accurate information needed to keep your Buick LeSabre running smoothly.

Updated

Overview Specifications

This document provides detailed specifications and technical information about the 4T60-E automatic transmission used in 2000-2005 Buick LeSabre models. It covers essential features, maintenance tips, and performance characteristics to help owners and technicians understand and maintain this transmission system. Use this guide to access comprehensive details on operation, troubleshooting, and key specifications.

How to Use

Use the search function to quickly locate specific terms or topics within the document. Enter keywords like 'fluid capacity' or 'shift points' to find relevant sections instantly.

Navigate through the document by scrolling or using the table of contents. Each major section is clearly labeled, and subsections provide detailed breakdowns of specific aspects of the 4T60-E transmission.

Key Specifications

Transmission Type

4T60-E Automatic

Gear Count

4 Forward, 1 Reverse

Fluid Capacity

7.4 quarts

Maximum Torque

330 lb-ft

Weight

150 lbs

Available Specifications

Technical Specifications

This section outlines the core technical specifications of the 4T60-E transmission, including gear ratios, torque capacity, and fluid requirements. It is essential for understanding the transmission's design and operational limits.

Gear Ratios
  • 1st Gear: 2.92:1
  • 2nd Gear: 1.57:1
  • 3rd Gear: 1.00:1
  • 4th Gear: 0.70:1
  • Reverse Gear: 2.38:1
Torque Capacity
  • Maximum Torque: 330 lb-ft
  • Input Torque Rating: 440 Nm
  • Designed for V6 engines
  • Handles up to 3.8L engine displacement

Maintenance Guidelines

Proper maintenance is crucial for the longevity and performance of the 4T60-E transmission. This section provides detailed instructions on fluid changes, filter replacements, and common maintenance tasks.

Fluid Requirements
  • Fluid Type: Dexron III or equivalent
  • Capacity: 7.4 quarts (pan drop)
  • Fluid Change Interval: Every 50,000 miles
  • Fluid Level Check: Engine running, transmission in Park
Filter Replacement
  • Filter Type: Paper element
  • Replacement Interval: Every 50,000 miles or as needed
  • Filter Location: Inside the transmission pan
  • Tools Required: Socket set, gasket scraper

Common Issues and Solutions

This section addresses common problems associated with the 4T60-E transmission, including symptoms, potential causes, and recommended solutions for reliable operation.

Shift Quality Issues
  • Symptom: Hard shifts or slipping
  • Possible Cause: Low fluid level or worn clutch packs
  • Solution: Check fluid level and condition, inspect valve body
  • Additional Notes: May require professional diagnostics
Transmission Overheating
  • Symptom: Burning smell or warning light
  • Possible Cause: Clogged cooler lines or inadequate fluid
  • Solution: Flush cooler lines, ensure proper fluid level
  • Additional Notes: Install an external cooler if necessary

Transmission Specifications

Overview

Type
Automatic
Configuration
Front-wheel drive
Platform
GM W-body
Material
Aluminum casing
Location
Longitudinal

Dimensions

Length
28.5 inches (724 mm)
Width
18.3 inches (465 mm)
Height
14.7 inches (373 mm)
Weight
145 lbs (65.8 kg)
input Shaft Length
6.7 inches (170 mm)
Output Shaft Length
12.4 inches (315 mm)
Fluid Capacity
7.4 quarts (7.0 liters)

Materials

Casing
Aluminum alloy
Gears
Carbon steel
Clutch Packs
Friction material with steel plates
Seals
Viton rubber
Shift Solenoids
Stainless steel

Features

Shift Control
  • Electronic shift control
  • Adaptive shift logic
  • Manual shift mode
Cooling
  • Integrated transmission cooler
  • Fluid temperature sensor
  • Auxiliary cooler support
Performance
  • Four forward gears
  • Overdrive capability
  • Torque converter lockup
Diagnostics
  • On-board diagnostics (OBD-II)
  • Shift solenoid monitoring
  • Fluid pressure sensors
Durability
  • Reinforced input shaft
  • High-capacity clutch packs
  • Hardened gear teeth

Safety Features

Overheating Protection
  • Fluid temperature sensor
  • Fail-safe mode
Shift Control
  • Neutral start safety switch
  • Shift interlock system
Emergency
  • Manual shift override
  • Backup limp mode

Comfort Features

Smoothness
  • Adaptive shift logic
  • Torque converter lockup
Noise Reduction
  • Vibration dampening
  • Helical cut gears
Convenience
  • Electronic shift control
  • Manual shift mode

Accessories

Cooling
  • Transmission cooler lines
  • Auxiliary cooler
  • Temperature sensor
Mounting
  • Transmission mounts
  • Crossmember
  • Bracket kit
Electronics
  • Shift solenoid kit
  • Transmission control module
  • Wiring harness

Maintenance

Service interval
Every 30,000 miles
Service Items
  • Fluid and filter change
  • Shift solenoid inspection
  • Seal and gasket check
  • Torque converter inspection
  • Transmission mount inspection
Maintenance Notes
Use only Dexron III or equivalent transmission fluid.

Warranty

Basic
Miles: 36,000
Years: 3
Coverage: Parts and labor
Powertrain
Miles: 60,000
Years: 5
Coverage: Major components
Corrosion
Miles: 100,000
Years: 7
Coverage: Rust perforation
Emissions
Miles: 50,000
Years: 2
Coverage: Emission-related parts

Production Details

Manufacturer
General Motors
Manufacturing Process
  • Casting
  • Machining
  • Assembly
  • Testing
Quality Control
inspection: 100% component inspection
Testing: Durability and performance testing
Standards: ISO 9001 certified
Sustainability Practices
  • Recycled materials
  • Eco-friendly fluid
  • Energy-efficient manufacturing
Production Metrics
Units Per Year: 250,000
Defect Rate: 0.5%
Lead Time: 6 weeks

Service Information for 4t60 transmission Service

Maintenance and service requirements specific to this component

30,000
24
  • Transmission fluid and filter change
  • Shift solenoid inspection
  • Seal and gasket check
  • Torque converter inspection
  • Transmission mount inspection

Use only Dexron III or equivalent transmission fluid.

60,000
48
  • Complete fluid flush
  • Clutch pack inspection
  • Shift linkage adjustment
  • Transmission cooler inspection
  • Electronic control module diagnostics

Inspect for wear and replace components as necessary.

100,000
84
  • Transmission overhaul
  • Replace clutch packs
  • Replace seals and gaskets
  • Inspect and replace torque converter if needed
  • Performance testing

Perform a comprehensive inspection and replace all worn parts.

Common Questions

Find answers to common questions about torque specifications

Q1

What are the technical specifications of the 4T60 transmission in a 2000-2005 Buick LeSabre?

The 4T60 is a 4-speed automatic transmission designed for longitudinal engine applications. It features a bellhousing bolt pattern compatible with GM's LA and LT engines. The transmission pan is 10.5 inches long, and it uses Dexron VI fluid. Maximum torque capacity is approximately 300 lb-ft, making it suitable for V6 engines. Compatibility includes various GM vehicles from 2000-2005, including the Buick LeSabre, Chevrolet Impala, and Pontiac Bonneville.

Q2

What maintenance is required for the 4T60 transmission?

Regular maintenance is crucial for optimal performance. Change transmission fluid every 30,000 to 60,000 miles using Dexron VI. Inspect the transmission pan gasket every 15,000 miles and replace as needed. Check the fluid level monthly and top off if necessary. Replace the transmission filter every 30,000 miles. Every 60,000 miles, flush and refill the transmission fluid and inspect the cooler lines for damage or leaks.

Q3

How do I install or replace the 4T60 transmission?

Replacing the 4T60 requires a lift or jack, transmission jack, and socket set. Disconnect the battery, drain the fluid, and remove the cooler lines. Detach the electrical connectors and shift cable. Remove the crossmember and mounting bracket, then pull the transmission straight out. Install the new transmission by reversing these steps, ensuring proper torque specs (e.g., bellhousing bolts at 40-50 ft-lbs). Refill with Dexron VI and test drive to check for leaks or issues.

Q4

How do I troubleshoot common issues with the 4T60 transmission?

Common issues include slipping or hesitation, which may indicate low fluid levels or a faulty solenoid. Check fluid levels and condition. If slipping persists, inspect the solenoid or TCC for damage. Leaks around the pan gasket or cooler lines require immediate attention. Use a scan tool to check for trouble codes. If issues persist, consider professional diagnosis.

Q5

How can I optimize the performance of the 4T60 transmission?

Optimize performance by maintaining proper fluid levels and using high-quality Dexron VI. Avoid extreme temperatures and towing without a cooler. Shift firmly and avoid aggressive driving. Consider aftermarket torque converters for better acceleration. Regularly flushing fluid and replacing filters can enhance longevity and performance.

Factory Service Resources

Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.

GM Service Manual - 4T60 Transmission

Coming Soon

Detailed service procedures, specifications, and diagnostic information for the 4T60 transmission.

Technical Bulletin - 4T60 Updates

Coming Soon

Important updates and service bulletins for the 4T60 transmission, including recalls and improvements.

Parts Catalog - 4T60 Transmission

Coming Soon

Comprehensive list of parts and accessories for the 4T60 transmission, including torque converters and filters.

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Technical Information
  • All specifications, including torque values, fluid capacities, and maintenance procedures, should be verified against your vehicle's factory service manual.
  • Vehicle specifications and procedures may vary by model year, trim level, and region.
  • Always follow the manufacturer's recommended procedures and safety precautions.
  • Working on vehicles can be dangerous. Always take proper safety precautions and use appropriate safety equipment.
  • If you're unsure about any procedure, consult a qualified professional mechanic.
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About the Author

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Alan Montanye - Automotive Technical Specialist
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Alan Montanye

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