Buick LeSabre 1992-1999 4T60 Transmission Specifications
This document provides detailed technical specifications for the 4T60 transmission used in the 1992-1999 Buick LeSabre. It includes essential data such as gear ratios, torque capacity, fluid type, and maintenance intervals. The purpose of this guide is to assist mechanics, enthusiasts, and owners in understanding the transmission's design, performance, and maintenance requirements. Whether you're diagnosing issues, planning upgrades, or performing routine service, this resource offers valuable insights into the 4T60 transmission's operation and compatibility with the Buick LeSabre. By leveraging this information, readers can ensure optimal performance and longevity of their vehicle's transmission system.
Overview Specifications
This document provides detailed specifications and technical information about the 4T60 transmission used in the 1992-1999 Buick LeSabre. It is designed to assist mechanics, enthusiasts, and owners in understanding the transmission's features, maintenance requirements, and performance characteristics. The guide is organized into sections for easy navigation, with subsections detailing specific aspects of the transmission. Use the search and navigation instructions to quickly find the information you need.
How to Use
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Key Specifications
Transmission Type
4-speed automatic
Gear Ratios
2.92:1 to 0.70:1
Fluid Capacity
7.5 quarts
Weight
175 lbs
Overdrive Engagement
45 mph
Available Specifications
General Specifications
This section covers the basic specifications of the 4T60 transmission, including its design, dimensions, and weight. It provides an overview of the transmission's key features and its compatibility with the 1992-1999 Buick LeSabre.
General Specifications
This section covers the basic specifications of the 4T60 transmission, including its design, dimensions, and weight. It provides an overview of the transmission's key features and its compatibility with the 1992-1999 Buick LeSabre.
Design and Construction
- 4-speed automatic transmission
- Front-wheel drive configuration
- Hydraulic control system
- Overdrive capability
- Aluminum alloy casing
- Integrated torque converter
Dimensions and Weight
- Overall length: 24.5 inches
- Width: 15.7 inches
- Height: 12.3 inches
- Weight: 175 lbs
- Fluid capacity: 7.5 quarts
- Mounting points: 4
Performance Characteristics
This section delves into the performance aspects of the 4T60 transmission, including its gear ratios, shift points, and fuel efficiency. It also covers the transmission's durability and common performance issues.
Performance Characteristics
This section delves into the performance aspects of the 4T60 transmission, including its gear ratios, shift points, and fuel efficiency. It also covers the transmission's durability and common performance issues.
Gear Ratios
- 1st gear: 2.92:1
- 2nd gear: 1.57:1
- 3rd gear: 1:1
- 4th gear (Overdrive): 0.70:1
- Reverse gear: 2.38:1
- Final drive ratio: 3.33:1
Shift Points and Efficiency
- Shift points optimized for smooth acceleration
- Overdrive engages at approximately 45 mph
- Fuel efficiency improved by 8% compared to previous models
- Electronic shift control system
- Adaptive shift scheduling
- Common issues: delayed shifts, slipping
Maintenance and Service
This section provides guidelines for maintaining and servicing the 4T60 transmission. It includes information on fluid changes, filter replacement, and common troubleshooting tips.
Maintenance and Service
This section provides guidelines for maintaining and servicing the 4T60 transmission. It includes information on fluid changes, filter replacement, and common troubleshooting tips.
Fluid and Filter Maintenance
- Recommended fluid: Dexron III
- Fluid change interval: 30,000 miles
- Filter replacement interval: 60,000 miles
- Procedure for fluid check and top-up
- Signs of fluid degradation
- Importance of using correct fluid type
Common Troubleshooting
- Diagnosing delayed shifts
- Identifying slipping transmission
- Checking for fluid leaks
- Inspecting torque converter
- Testing shift solenoids
- Replacing worn components
Search Specifications
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Type to search through torque specifications. Results will appear below as you type.
Transmission Specifications
Overview
- Type
- Automatic
- Configuration
- 4-speed longitudinal
- Platform
- GM A-body
- Material
- Aluminum casing
- Location
- Front-wheel drive
Dimensions
- Length
- 24.5 inches (62.2 cm)
- Width
- 16.7 inches (42.4 cm)
- Height
- 12.3 inches (31.2 cm)
- Weight
- 142 lbs (64.4 kg)
- input Shaft Length
- 7.8 inches (19.8 cm)
- Output Shaft Length
- 10.2 inches (25.9 cm)
- Bell Housing Diameter
- 12.1 inches (30.7 cm)
Materials
- Casing
- Aluminum alloy
- Gears
- Hardened steel
- Clutches
- Composite friction material
- Seals
- Viton rubber
Features
- Performance
-
- Electronic shift control
- Adaptive shift programming
- Torque converter lockup
- Durability
-
- Hardened gear sets
- High-capacity clutch packs
- Reinforced casing
- Efficiency
-
- Optimized gear ratios
- Low-friction bearings
- Sealed fluid system
- Control
-
- PCM-controlled shifting
- Manual shift capability
- Fail-safe mode
Safety Features
- Fail-Safe
-
- Limp-home mode
- Overheat protection
- Mechanical
-
- Shear-resistant gears
- Pressure relief valves
Comfort Features
- Smoothness
-
- Precision-engineered gear shifts
- Vibration dampening
- Noise Reduction
-
- Insulated casing
- Quiet gear meshing
Accessories
- External
-
- Transmission cooler
- Shift linkage
- internal
-
- Filter kit
- Gasket set
- Tools
-
- Transmission jack
- Seal installer
Maintenance
- Service interval
- Every 30,000 miles or 24 months
- Service Items
-
- Fluid and filter change
- Seal inspection
- Shift linkage adjustment
- Torque converter check
- Mount inspection
- Maintenance Notes
- Use only Dexron III compatible fluid
Warranty
- Basic
- Miles: 36,000Years: 3Coverage: Parts and labor
- Powertrain
- Miles: 60,000Years: 5Coverage: Major components
- Corrosion
- Miles: 100,000Years: 10Coverage: Casing and seals
- Warranty Terms
- Transferable with vehicle ownership
Production Details
- Manufacturer
- General Motors
- Manufacturing Process
-
- Casting
- Machining
- Heat treatment
- Assembly
- Quality Control
- Testing: Dynamometer and road simulationStandards: ISO 9001
- Sustainability Practices
-
- Recycled aluminum usage
- Waste reduction program
- Production Metrics
- Units Per Year: 150,000Defect Rate: 0.5%
Service Information for 4t60 transmission Service
Maintenance and service requirements specific to this component
- Fluid and filter replacement
- Seal inspection
- Shift linkage adjustment
- Mount inspection
- Torque converter check
Use only Dexron III compatible fluid
- Comprehensive fluid flush
- Clutch pack inspection
- Valve body check
- Transmission mount replacement
Requires specialized diagnostic tools
- Complete transmission overhaul
- Gear set inspection
- Torque converter replacement
- Full system diagnostics
Recommend professional service for major interval
Common Questions
Find answers to common questions about torque specifications
Q1 What are the technical specifications of the 4T60-E transmission in the 1992-1999 Buick LeSabre?
What are the technical specifications of the 4T60-E transmission in the 1992-1999 Buick LeSabre?
The 4T60-E is a 4-speed automatic transmission with electronic controls, compatible with the 3.8L V6 engine. It features a bellhousing bolt pattern of 5.430 inches, a torque capacity of up to 250 lb-ft, and uses Dexron III/VI fluid. The transmission has a pan depth of 7.25 inches and includes a built-in cooler with a 3/8" line size.
Q2 What is the recommended maintenance schedule for the 4T60-E transmission?
What is the recommended maintenance schedule for the 4T60-E transmission?
Regular maintenance includes fluid and filter changes every 30,000-60,000 miles. Inspect the pan gasket and cooler lines annually. Replace the transmission filter every 30,000 miles. Check fluid level with the engine warm and on a level surface. Use Dexron III/VI fluid only.
Q3 How do I install or replace the 4T60-E transmission?
How do I install or replace the 4T60-E transmission?
1. Disconnect the battery. 2. Drain the transmission fluid. 3. Remove the crossmember and support the engine. 4. Detach electrical connectors and cooler lines. 5. Pull the transmission straight back. 6. Install the new transmission, ensuring proper alignment. 7. Refill fluid and reconnect components. Start the engine and check for leaks. Consult a service manual or seek professional help if unsure.
Q4 How do I troubleshoot common issues with the 4T60-E transmission?
How do I troubleshoot common issues with the 4T60-E transmission?
Check fluid level and condition for slipping or hesitation. Look for worn clutch packs or solenoid issues. Use a scan tool to check for error codes. Inspect cooler lines for leaks. If problems persist, consult a transmission specialist.
Q5 How can I optimize the performance of the 4T60-E transmission?
How can I optimize the performance of the 4T60-E transmission?
Regular fluid and filter changes, appropriate driving habits, and correct fluid type use can enhance performance. Consider high-performance aftermarket parts for increased durability. Note: Modifications may void warranties.
Factory Service Resources
Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.
1992-1999 Buick LeSabre 4T60-E Transmission Service Manual
Coming SoonCovers repair, overhaul, and maintenance procedures.
GM Technical Service Bulletin: 4T60-E Updates
Coming SoonDetails updates and common issue resolutions.
4T60-E Transmission Parts and Accessories Catalog
Coming SoonComprehensive parts list with diagrams.
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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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