GMC Yukon 1992-1999 4L60 Transmission Specifications
This document provides detailed specifications for the 4L60 transmission used in 1992-1999 GMC Yukon models. It includes information on gear ratios, torque capacity, fluid requirements, and maintenance intervals. Designed to assist mechanics, enthusiasts, and owners, this guide offers valuable insights for troubleshooting, repair, and performance upgrades. The 4L60 transmission, known for its reliability and adaptability, is a key component in these vehicles, and understanding its specifications ensures optimal performance and longevity. Whether you're performing routine maintenance or planning modifications, this resource serves as an essential reference for working with the 4L60 transmission in this generation of GMC Yukon.
Overview Specifications
This document provides detailed technical specifications and information about the 4L60-E transmission used in the 1992-1999 GMC Yukon. It is designed for technicians, enthusiasts, and owners who need accurate data for maintenance, repair, or performance upgrades. The content is organized into sections for easy navigation, covering key aspects such as design, performance, and maintenance. Use the search and navigation instructions to quickly find the information you need.
How to Use
Use the search function to locate specific terms or phrases within the document. Enter keywords like 'torque capacity' or 'fluid type' to quickly find relevant sections.
Navigate through the document using the section titles and subsection summaries. Click on a section to expand it and view detailed points. Use the quick reference table for key specifications.
Key Specifications
Transmission Type
4L60-E
Gear Count
4-speed
Maximum Torque
360 lb-ft
Fluid Capacity
12 quarts
Weight
150 lbs
Available Specifications
Design and Construction
The 4L60-E transmission, introduced in 1992, is an electronically controlled four-speed automatic transmission. It features a lightweight aluminum case and a robust internal design to handle the power of the GMC Yukon's V8 engines. This section covers the key components and construction details.
Design and Construction
The 4L60-E transmission, introduced in 1992, is an electronically controlled four-speed automatic transmission. It features a lightweight aluminum case and a robust internal design to handle the power of the GMC Yukon's V8 engines. This section covers the key components and construction details.
Case and Housing
- Aluminum case for reduced weight
- Sealed design for improved durability
- Integrated bell housing
- Compatible with 2WD and 4WD configurations
Internal Components
- Four forward gears and one reverse gear
- High-strength planetary gear sets
- Heavy-duty clutch packs
- Electronically controlled valve body
Performance Specifications
The 4L60-E transmission is known for its smooth shifting and reliable performance. This section provides detailed technical specifications, including torque capacity, gear ratios, and fluid requirements.
Performance Specifications
The 4L60-E transmission is known for its smooth shifting and reliable performance. This section provides detailed technical specifications, including torque capacity, gear ratios, and fluid requirements.
Gear Ratios
- First gear: 3.06:1
- Second gear: 1.63:1
- Third gear: 1.00:1
- Fourth gear: 0.70:1
- Reverse gear: 2.29:1
Torque Capacity
- Maximum torque capacity: 360 lb-ft
- Designed for V8 engines up to 6.0L
- Upgradable with performance parts
Maintenance and Service
Proper maintenance is essential for the longevity of the 4L60-E transmission. This section covers fluid recommendations, service intervals, and common troubleshooting tips.
Maintenance and Service
Proper maintenance is essential for the longevity of the 4L60-E transmission. This section covers fluid recommendations, service intervals, and common troubleshooting tips.
Fluid Requirements
- Recommended fluid: Dexron III or equivalent
- Fluid capacity: 12 quarts (including torque converter)
- Regular fluid checks every 30,000 miles
Common Issues
- Delayed shifting due to worn clutch packs
- Overheating from low fluid levels
- Electronics failure in older models
- Regular solenoid checks recommended
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Transmission Specifications
Overview
- Type
- Automatic
- Configuration
- 4-speed overdrive
- Platform
- GM RWD/4WD
- Material
- Aluminum case
- Location
- Rear-wheel drive position
Dimensions
- Length
- 24.5 inches (622.3 mm)
- Width
- 15.7 inches (398.8 mm)
- Height
- 12.3 inches (312.4 mm)
- Weight
- 150 lbs (68 kg)
- input Shaft Diameter
- 1.125 inches (28.6 mm)
- Output Shaft Diameter
- 1.25 inches (31.75 mm)
- Bellhousing Depth
- 7.25 inches (184.2 mm)
Materials
- Case
- Aluminum alloy
- Gears
- Hardened steel
- Clutch Plates
- Friction material
- Seals
- Nitrile rubber
- Fluid
- Dexron III automatic transmission fluid
Features
- Performance
-
- Electronic shift control
- Overdrive gear for fuel efficiency
- Torque converter lockup
- Durability
-
- Hardened steel gears
- Reinforced clutch packs
- High-capacity cooling system
- Control
-
- PCM-controlled shifting
- Manual shift mode
- Adaptive shift algorithms
- Efficiency
-
- Low fluid drag design
- Optimized gear ratios
- Lockup torque converter
- Compatibility
-
- GM RWD/4WD platforms
- V6 and V8 engine compatibility
- Multiple gear ratio options
Safety Features
- Mechanical
-
- Overheat protection
- Overpressure relief valve
- Electronic
-
- Fail-safe mode
- Shift timing control
- Operational
-
- Neutral safety switch
- Reverse lockout
Comfort Features
- Smoothness
-
- Soft shift programming
- Torque converter dampening
- Noise Reduction
-
- Quiet gear design
- Vibration dampening mounts
- Convenience
-
- Automatic shifting
- Manual override
Accessories
- External
-
- Transmission cooler
- Shift linkage kit
- Torque converter
- internal
-
- Clutch pack kit
- Seal kit
- Gasket kit
- Electronic
-
- Shift solenoid
- Speed sensor
- Control module
Maintenance
- Service interval
- Every 30,000 miles or 24 months
- Service Items
-
- Fluid and filter change
- Seal inspection
- Shift linkage adjustment
- Torque converter inspection
- Electronic control check
- Maintenance Notes
- Use Dexron III fluid, monitor for leaks, and ensure proper cooling system operation.
Warranty
- Basic
- Miles: 36,000Years: 3Coverage: Parts and labor
- Powertrain
- Miles: 60,000Years: 5Coverage: Major components
- Extended
- Miles: 100,000Years: 7Coverage: Limited components
- Terms
- Warranty void if improper fluid or service intervals are not followed.
Production Details
- Manufacturer
- General Motors
- Manufacturing Process
-
- Casting of aluminum case
- CNC machining of gears
- Heat treatment of components
- Precision assembly
- Quality Control
- inspection: 100% component inspectionTesting: Durability and performance testingStandards: ISO 9001 certified
- Sustainability Practices
-
- Recycling of aluminum scrap
- Eco-friendly fluid options
- Energy-efficient manufacturing
- Production Metrics
- Units Per Year: 500,000Defect Rate: 0.5%Lead Time: 6 weeks
Service Information for 4l60 transmission Service
Maintenance and service requirements specific to this component
- Fluid and filter replacement
- Seal inspection
- Shift linkage adjustment
- Torque converter check
- Electronic control system test
Use Dexron III fluid and ensure proper cooling system operation.
- Full fluid flush
- Clutch pack inspection
- Valve body cleaning
- Speed sensor check
- Shift solenoid test
Special tools required for valve body disassembly.
- Transmission overhaul
- Torque converter replacement
- Gear inspection
- Seal and gasket replacement
- Performance testing
Major service requires professional equipment and expertise.
Common Questions
Find answers to common questions about torque specifications
Q1 Is the 4L60 transmission compatible with other GMC models from 1992-1999?
Is the 4L60 transmission compatible with other GMC models from 1992-1999?
The 4L60 transmission is primarily designed for the 1992-1999 GMC Yukon, but it is also compatible with other GM vehicles from the same era, such as Chevrolet trucks and SUVs. It features a 4-speed automatic design with overdrive and is compatible with engines like the 5.7L V8. Always verify the transmission’s model number and compatibility with your specific vehicle’s engine and drivetrain configuration.
Q2 What are the maintenance requirements for the 4L60 transmission?
What are the maintenance requirements for the 4L60 transmission?
Regular maintenance for the 4L60 transmission includes fluid and filter changes every 30,000 to 50,000 miles. Use Dexron III or compatible ATF. Inspect for leaks, ensure proper fluid levels, and check the transmission cooler for blockages. Periodic inspection of the torque converter, seals, and gaskets is recommended to prevent premature wear and ensure optimal performance.
Q3 How do I install or replace a 4L60 transmission in my GMC Yukon?
How do I install or replace a 4L60 transmission in my GMC Yukon?
To install or replace the 4L60 transmission, first disconnect the battery and remove the driveshaft, exhaust components, and crossmember. Disconnect the transmission cooler lines, electrical connectors, and shift linkage. Lower the transmission using a jack and remove it from the vehicle. Install the new unit in reverse order, ensuring proper alignment with the engine and torque converter. Refill with ATF and test for proper operation.
Q4 What are common troubleshooting steps for the 4L60 transmission?
What are common troubleshooting steps for the 4L60 transmission?
Common issues with the 4L60 include slipping gears, delayed shifts, and fluid leaks. Start by checking the ATF level and condition. Inspect for worn or damaged seals, gaskets, and the torque converter. Use a diagnostic scanner to check for error codes. If the problem persists, inspect the valve body, solenoids, and internal components for wear or failure.
Q5 How can I optimize the performance of my 4L60 transmission?
How can I optimize the performance of my 4L60 transmission?
To optimize performance, use high-quality ATF and consider upgrading to a performance transmission cooler. Regularly inspect and replace worn components like the torque converter and shift solenoids. For enhanced durability, install a shift kit to improve shift firmness and reduce heat buildup. Ensure proper alignment and balance during installation to prevent unnecessary wear.
Factory Service Resources
Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.
4L60 Transmission Service Manual
Coming SoonDetailed service manual covering disassembly, repair, and reassembly of the 4L60 transmission. Includes torque specifications, diagnostic procedures, and maintenance schedules.
4L60 Technical Service Bulletin (TSB)
Coming SoonBulletin addressing common issues, updates, and improvements for the 4L60 transmission. Includes recommended fixes and part updates.
4L60 Parts and Accessories Catalog
Coming SoonComprehensive catalog of OEM and aftermarket parts for the 4L60 transmission. Includes part numbers, descriptions, and compatibility information.
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The content on this website is provided "as is" without any representations or warranties, express or implied. We make no representations or warranties regarding the accuracy, completeness, or availability of the information.
We shall not be liable for any direct, indirect, special, or consequential damages arising from the use of information on this website.
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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