GMC Envoy 1998-2000 4L60 Transmission Specifications
This document provides detailed specifications for the 4L60-E automatic transmission used in the 1998-2000 GMC Envoy. It includes gear ratios, torque converter specifications, fluid capacity, and shift points, along with maintenance intervals and common troubleshooting tips. These specifications are essential for mechanics, enthusiasts, and owners looking to understand, maintain, or repair their vehicle's transmission. The information is derived from factory service manuals and technical resources, ensuring accuracy and reliability. Whether you're performing routine maintenance, diagnosing issues, or planning upgrades, this guide offers valuable insights to optimize the performance and longevity of your 4L60-E transmission.
Overview Specifications
This document provides detailed specifications and technical information about the 4L60-E transmission used in the 1998-2000 GMC Envoy. It is designed to assist mechanics, enthusiasts, and owners in understanding the transmission's features, maintenance requirements, and performance capabilities. Use the search and navigation instructions to quickly locate specific details or browse through sections for comprehensive insights.
How to Use
Use the search functionality by entering keywords related to the 4L60-E transmission, such as 'torque converter' or 'gear ratios'. This will help you find specific information quickly.
Navigate through the document by scrolling through sections or using the table of contents. Each section is organized into subsections for easy access to detailed technical points.
Key Specifications
Transmission Type
4-speed automatic
Gear Ratios
3.06, 1.63, 1.00, 0.70
Maximum Torque
360 lb-ft
Fluid Type
Dexron III
Weight
150 lbs (approx)
Available Specifications
General Specifications
This section covers the basic specifications of the 4L60-E transmission, including its design, compatibility, and key features. It provides a foundation for understanding the transmission's capabilities and limitations.
General Specifications
This section covers the basic specifications of the 4L60-E transmission, including its design, compatibility, and key features. It provides a foundation for understanding the transmission's capabilities and limitations.
Design and Compatibility
- 4-speed automatic transmission
- Designed for rear-wheel-drive and four-wheel-drive vehicles
- Compatible with V6 and V8 engines
- Electronic control system for precise shifting
- Aluminum case for reduced weight
- Wide range of gear ratios for optimal performance
Key Features
- Overdrive for improved fuel efficiency
- Lock-up torque converter for reduced slippage
- Durable construction for long service life
- Adaptive shift technology for smooth operation
- Compatible with aftermarket performance upgrades
- Factory-rated for up to 360 lb-ft of torque
Performance and Maintenance
This section focuses on the performance characteristics of the 4L60-E transmission and provides guidelines for proper maintenance to ensure longevity and reliability.
Performance and Maintenance
This section focuses on the performance characteristics of the 4L60-E transmission and provides guidelines for proper maintenance to ensure longevity and reliability.
Performance Metrics
- Gear ratios: 3.06 (1st), 1.63 (2nd), 1.00 (3rd), 0.70 (4th)
- Maximum engine power: 300-350 horsepower
- Shift points optimized for both fuel economy and performance
- Smooth and consistent shifting under load
- Designed for towing and heavy-duty use
- Adaptive learning for driver behavior
Maintenance Guidelines
- Regular fluid changes every 30,000-50,000 miles
- Use of Dexron III or equivalent transmission fluid
- Inspect for leaks and wear during routine service
- Replace filter and gasket during fluid changes
- Monitor for unusual noises or shifting issues
- Perform diagnostic scans for error codes
Common Issues and Solutions
This section highlights common problems associated with the 4L60-E transmission and provides practical solutions to address them effectively.
Common Issues and Solutions
This section highlights common problems associated with the 4L60-E transmission and provides practical solutions to address them effectively.
Common Problems
- Delayed or harsh shifting
- Transmission slipping under load
- Overheating due to heavy use or poor cooling
- Torque converter clutch failure
- Solenoid or valve body issues
- Wear on internal components over time
Solutions and Repairs
- Replace worn solenoids or valve body components
- Upgrade to a high-performance torque converter
- Install an auxiliary transmission cooler
- Perform a complete fluid flush and filter replacement
- Rebuild or replace damaged internal parts
- Use aftermarket performance kits for enhanced durability
Search Specifications
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Transmission Specifications
Overview
- Type
- Automatic
- Configuration
- 4-speed overdrive
- Platform
- GM GMT330
- Material
- Aluminum and steel
- Location
- Front-wheel drive, rear-wheel drive
Dimensions
- Length
- 21.5 inches (546 mm)
- Width
- 16.3 inches (414 mm)
- Height
- 12.7 inches (323 mm)
- Weight
- 133 lbs (60.3 kg)
- input Shaft Length
- 8.2 inches (208 mm)
- Output Shaft Length
- 9.8 inches (249 mm)
- Fluid Capacity
- 11.2 quarts (10.6 liters)
Materials
- Housing
- Aluminum alloy
- Gears
- Heat-treated steel
- Clutch Plates
- Carbon fiber composite
- Seals
- Viton rubber
- Torque Converter
- Steel and aluminum
Features
- Transmission Control
-
- Electronic shift control
- Adaptive shift scheduling
- Manual shift mode
- Tow/haul mode
- Performance
-
- High-efficiency torque converter
- Wide gear ratio spread
- Smooth shift quality
- Durable clutch packs
- Cooling
-
- Integrated transmission cooler
- External cooler compatibility
- Thermal management system
- Durability
-
- Reinforced case design
- High-strength internal components
- Anti-wear additives in fluid
- integration
-
- GM Powertrain compatibility
- OBD-II diagnostics
- Factory programming
Safety Features
- Fail Safe
-
- Limp-home mode
- Overheat protection
- Pressure monitoring
- Construction
-
- Reinforced bell housing
- Burst-resistant torque converter
Comfort Features
- Shift Quality
-
- Smooth gear transitions
- Reduced shift shock
- Quiet operation
- Drive Modes
-
- Normal driving mode
- Performance mode
- Tow/haul mode
Accessories
- Cooling
-
- Transmission cooler kit
- Auxiliary cooler lines
- Thermostatic bypass valve
- Performance
-
- Shift improvement kit
- High-performance torque converter
- Upgraded clutch packs
- Maintenance
-
- Fluid change kit
- Filter replacement kit
- Gasket and seal kit
Maintenance
- Service interval
- Every 30,000 miles
- Service Items
-
- Fluid and filter change
- Inspect for leaks
- Check shift quality
- Inspect cooling system
- Test electronic controls
- Maintenance Notes
- Use Dexron VI transmission fluid only.
Warranty
- Basic
- Miles: 36,000Years: 3Coverage: Parts and labor
- Powertrain
- Miles: 60,000Years: 5Coverage: Major components
- Corrosion
- Miles: 100,000Years: 6Coverage: Perforation only
- Emissions
- Miles: 50,000Years: 4Coverage: Emission-related parts
- Warranty Terms
- Transferable to subsequent owners
Production Details
- Manufacturer
- General Motors
- Manufacturing Process
-
- Casting of aluminum housing
- CNC machining of internal components
- Heat treatment of gears
- Assembly with precision robotics
- Quality Control
- inspection: 100% component testingTesting: Dynamometer performance validationStandards: ISO 9001 certified
- Sustainability
-
- Recycled materials in housing
- Energy-efficient manufacturing
- Waste reduction initiatives
- Production Metrics
- Annual Volume: 500,000 unitsDefect Rate: Less than 0.1%
Service Information for 4l60 transmission Service
Maintenance and service requirements specific to this component
- Inspect transmission fluid level
- Check for leaks
- Replace transmission filter
- Test shift quality
- Inspect cooling system
Use Dexron VI transmission fluid only.
- Replace transmission fluid
- Inspect torque converter
- Check electronic controls
- Test pressure levels
- Inspect clutch packs
Special tools required for pressure testing.
- Complete transmission flush
- Inspect all internal components
- Replace worn seals and gaskets
- Test overall performance
- Check for wear and tear
Major service may require transmission removal.
Common Questions
Find answers to common questions about torque specifications
Q1 Is the 4L60 transmission compatible with other GMC models from 1998-2000?
Is the 4L60 transmission compatible with other GMC models from 1998-2000?
The 4L60 transmission is compatible with several GMC models from 1998-2000, including the GMC Envoy, Jimmy, and Sonoma. It is designed for vehicles with a 4.3L V6 engine. However, compatibility may vary based on specific configurations, such as drivetrain (2WD or 4WD) and gear ratios. Always verify with your vehicle's VIN and consult a professional for confirmation.
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 30,000-50,000 miles. Inspect for leaks, worn seals, and damaged components. Use Dexron III or VI transmission fluid. Additionally, check the transmission cooler lines and ensure proper fluid levels. Neglecting maintenance can lead to overheating, slipping gears, and premature failure.
Q3 How do I install or replace a 4L60 transmission in a 1998-2000 GMC Envoy?
How do I install or replace a 4L60 transmission in a 1998-2000 GMC Envoy?
To install or replace the 4L60 transmission, first, disconnect the battery and drain the transmission fluid. Remove the driveshaft, exhaust components, and crossmember. Disconnect the transmission cooler lines, wiring harness, and shift linkage. Support the transmission with a jack, remove the bellhousing bolts, and carefully lower the transmission. Reverse the steps for installation, ensuring proper alignment and torque specifications.
Q4 What are common troubleshooting steps for the 4L60 transmission?
What are common troubleshooting steps for the 4L60 transmission?
Common issues include slipping gears, delayed shifts, and fluid leaks. Start by checking the fluid level and condition. Inspect for leaks around the pan, seals, and cooler lines. Use a diagnostic scanner to check for error codes. If the transmission is slipping, inspect the clutch packs and bands. For delayed shifts, check the shift solenoids and valve body.
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 Dexron VI fluid and ensure proper fluid levels. Install an auxiliary transmission cooler to reduce heat buildup. Consider upgrading to a performance shift kit for firmer shifts. Regularly inspect and replace worn components, such as seals and bushings. Avoid excessive towing or heavy loads without proper modifications.
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 for 1998-2000 GMC Envoy models.
4L60 Technical Service Bulletin (TSB)
Coming SoonTechnical bulletin addressing common issues, updates, and fixes for the 4L60 transmission in 1998-2000 GMC vehicles.
4L60 Parts and Accessories Catalog
Coming SoonComprehensive catalog listing OEM and aftermarket parts, including rebuild kits, shift kits, and performance upgrades for the 4L60 transmission.
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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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