GMC Jimmy 1995-2001 4L60 Transmission Specifications
This document provides detailed technical specifications for the 4L60 transmission used in the 1995-2001 GMC Jimmy. It covers essential data such as gear ratios, torque capacity, fluid requirements, and maintenance intervals. The 4L60 transmission, known for its durability and performance, was a popular choice for mid-size SUVs like the Jimmy. This resource is invaluable for owners, mechanics, and enthusiasts seeking to understand the transmission's capabilities, ensure proper maintenance, or plan upgrades. Whether you're troubleshooting, performing repairs, or enhancing performance, this comprehensive guide offers the necessary insights to make informed decisions and keep your GMC Jimmy running smoothly.
Overview Specifications
This document provides detailed specifications and technical information about the 4L60 transmission used in the 1995-2001 GMC Jimmy. It is designed to help owners, mechanics, and enthusiasts understand the transmission's features, maintenance requirements, and performance characteristics. Use this guide to navigate through sections, search for specific details, and quickly reference key specifications.
How to Use
Use the search function to locate specific terms or topics within the document. Enter keywords related to the 4L60 transmission, such as 'gear ratios' or 'torque capacity,' to find relevant information quickly.
Navigate through the document by scrolling or using the table of contents. Each major section is labeled clearly, and subsections provide detailed information. Use the quick reference section for fast access to key specifications.
Key Specifications
Gear Ratios
3.06:1, 1.63:1, 1.00:1, 0.70:1
Torque Capacity
360 lb-ft
Fluid Capacity
11 quarts
Weight
150 lbs
Fluid Type
Dexron III
Available Specifications
General Information
This section covers the basic details of the 4L60 transmission, including its history, applications, and general features. Learn about its design, intended use, and compatibility with the 1995-2001 GMC Jimmy.
General Information
This section covers the basic details of the 4L60 transmission, including its history, applications, and general features. Learn about its design, intended use, and compatibility with the 1995-2001 GMC Jimmy.
Transmission Overview
- Four-speed automatic transmission
- Developed by General Motors
- Used in light-duty trucks and SUVs
- Hydraulically controlled with electronic shift control
- Compatible with V6 and V8 engines
- Known for durability and smooth shifting
Applications
- 1995-2001 GMC Jimmy
- Chevrolet S-10 and Blazer
- GMC Sonoma
- Other GM light-duty vehicles
- Common in rear-wheel-drive and four-wheel-drive configurations
Technical Specifications
This section provides detailed technical specifications of the 4L60 transmission, including gear ratios, torque capacity, and fluid requirements. Use this information for maintenance, repairs, or upgrades.
Technical Specifications
This section provides detailed technical specifications of the 4L60 transmission, including gear ratios, torque capacity, and fluid requirements. Use this information for maintenance, repairs, or upgrades.
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 and Capacity
- Maximum torque capacity: 360 lb-ft
- Fluid capacity: 11 quarts (with torque converter)
- Pan capacity: 5 quarts
- Recommended fluid: Dexron III or equivalent
Maintenance and Troubleshooting
Learn about routine maintenance practices and common troubleshooting tips for the 4L60 transmission. This section includes fluid change intervals, common issues, and solutions.
Maintenance and Troubleshooting
Learn about routine maintenance practices and common troubleshooting tips for the 4L60 transmission. This section includes fluid change intervals, common issues, and solutions.
Routine Maintenance
- Fluid change interval: Every 30,000 to 50,000 miles
- Replace transmission filter during fluid changes
- Inspect for leaks regularly
- Check fluid level and condition periodically
Common Issues
- Slipping gears: Often caused by low fluid or worn clutches
- Delayed engagement: Check fluid level and valve body
- Overheating: Inspect cooler lines and fluid condition
- Harsh shifting: May indicate a solenoid or pressure issue
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Transmission Specifications
Overview
- Type
- Automatic
- Configuration
- 4-speed overdrive
- Platform
- GM RWD/AWD vehicles
- Material
- Aluminum casing
- Location
- Rear-wheel drive
Dimensions
- Length
- 22.5 inches (571.5 mm)
- Width
- 14.3 inches (363.2 mm)
- Height
- 13.7 inches (348 mm)
- Weight
- 133 lbs (60.3 kg)
- input Shaft Length
- 10.2 inches (259.1 mm)
- Output Shaft Length
- 12.1 inches (307.3 mm)
- Bellhousing Diameter
- 12.8 inches (325.1 mm)
Materials
- Casing
- Aluminum alloy
- Gears
- Hardened steel
- Clutch Plates
- Composite friction material
- Seals
- Synthetic rubber
Features
- Performance
-
- Electronic shift control
- Overdrive for fuel efficiency
- Torque converter lockup
- Durability
-
- Hardened steel gears
- High-capacity fluid pump
- Reinforced clutch packs
- Technology
-
- PWM solenoid control
- Integrated TCM (Transmission Control Module)
- Adaptive shift programming
- Comfort
-
- Smooth shift transitions
- Reduced noise and vibration
- Adaptive shift patterns
Safety Features
- Fail Safe Modes
-
- Limp mode activation
- Overheat protection
- Fluid pressure monitoring
- Driving Assistance
-
- Grade braking
- Rolling start prevention
Comfort Features
- Shift Quality
-
- Smooth upshifts
- Minimal downshift shock
- Adaptive shift timing
- Noise Reduction
-
- Isolated mounting points
- Helical gear design
- Vibration dampening
Accessories
- Fluid
-
- Dexron III ATF
- Synthetic ATF options
- Fluid cooler kit
- Upgrades
-
- Performance shift kit
- High-stall torque converter
- Reinforced input shaft
- Tools
-
- Transmission jack adapter
- Fluid pressure gauge
- Shift linkage alignment tool
Maintenance
- Service interval
- Every 30,000 miles (48,280 km)
- Service Items
-
- Fluid and filter replacement
- Pan gasket inspection
- Shift linkage adjustment
- Solenoid testing
- Torque converter inspection
- Maintenance Notes
- Use only recommended fluids to avoid damage.
Warranty
- Basic
- Miles: 36,000Years: 3Coverage: Parts and labor
- Powertrain
- Miles: 60,000Years: 5Coverage: Major components
- Corrosion
- Miles: 100,000Years: 7Coverage: Perforation only
- Emissions
- Miles: 50,000Years: 2Coverage: Emission-related parts
Production Details
- Manufacturer
- General Motors
- Manufacturing Process
-
- Casting of aluminum casing
- CNC machining of internal components
- Heat treatment of gears
- Quality Control
- Pressure Testing: Fluid pressure checksPerformance Testing: Dyno testinginspection: Visual and mechanical inspection
- Sustainability Practices
-
- Recycling of aluminum scrap
- Use of eco-friendly fluids
- Energy-efficient manufacturing
- Production Metrics
- Units Per Day: 500Defect Rate: 0.2%
Service Information for 4l60 transmission Service
Maintenance and service requirements specific to this component
- Replace transmission fluid
- Inspect and replace filter
- Check for leaks
- Adjust shift linkage
Use only Dexron III or compatible fluid.
- Test solenoid operation
- Inspect torque converter
- Check fluid pressure
- Replace pan gasket
Perform a full system diagnostic.
- Overhaul clutch packs
- Replace seals and gaskets
- Inspect input and output shafts
- Flush transmission cooler
Consider a professional rebuild at this interval.
Common Questions
Find answers to common questions about torque specifications
Q1 Is the 4L60 transmission compatible with other GM vehicles from 1995 to 2001?
Is the 4L60 transmission compatible with other GM vehicles from 1995 to 2001?
The 4L60 transmission is compatible with a range of GM vehicles from 1995 to 2001, including the GMC Jimmy, Chevrolet Blazer, and other models with similar drivetrain configurations. It is crucial to verify the specific model year and engine type, as variations in bolt patterns, torque converters, and electronic controls may affect compatibility. Always cross-reference the vehicle's VIN and consult a professional before installation.
Q2 What are the maintenance requirements for a 4L60 transmission in a 1995-2001 GMC Jimmy?
What are the maintenance requirements for a 4L60 transmission in a 1995-2001 GMC Jimmy?
Regular maintenance is essential to ensure the longevity of the 4L60 transmission. This includes checking and replacing the transmission fluid every 30,000 to 50,000 miles, inspecting the filter for debris, and ensuring the cooling system is functioning properly. Additionally, periodic inspections of the torque converter, shift solenoids, and valve body are recommended. Adhering to these practices can prevent common issues such as slipping gears or overheating.
Q3 How do I replace the 4L60 transmission in a 1995-2001 GMC Jimmy?
How do I replace the 4L60 transmission in a 1995-2001 GMC Jimmy?
Replacing the 4L60 transmission involves several steps: First, disconnect the battery and drain the transmission fluid. Remove the driveshaft, exhaust components, and transmission crossmember. Detach the torque converter and transmission cooler lines, then unbolt the transmission from the engine. Lower the transmission carefully using a jack. Installation is the reverse process, ensuring proper alignment of the torque converter and secure attachment of all components. Refill with the correct fluid and test for leaks.
Q4 What are common troubleshooting steps for a 4L60 transmission in a 1995-2001 GMC Jimmy?
What are common troubleshooting steps for a 4L60 transmission in a 1995-2001 GMC Jimmy?
Common issues with the 4L60 transmission include delayed shifts, slipping gears, and overheating. Start by checking the transmission fluid level and condition. Inspect the filter for clogs and test the shift solenoids and pressure control system. Diagnose the vehicle's computer system for error codes. If the problem persists, consider inspecting the torque converter, valve body, or internal clutch packs. Professional diagnostic tools may be required for accurate troubleshooting.
Q5 How can I optimize the performance of my 4L60 transmission in a 1995-2001 GMC Jimmy?
How can I optimize the performance of my 4L60 transmission in a 1995-2001 GMC Jimmy?
To optimize the 4L60 transmission, use high-quality synthetic transmission fluid and ensure the cooling system is efficient. Consider upgrading the torque converter, shift kit, and valve body for improved performance. Regularly inspect and maintain the transmission to prevent wear and tear. Additionally, avoid excessive towing or heavy loads without proper modifications. These steps can enhance shift quality, durability, and overall transmission 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.
1995-2001 GMC Jimmy 4L60 Transmission Service Manual
Coming SoonThis comprehensive manual provides detailed instructions for servicing and repairing the 4L60 transmission, including diagnostic procedures and maintenance tips.
4L60 Transmission Technical Service Bulletin
Coming SoonThis bulletin highlights common issues, updates, and fixes for the 4L60 transmission in 1995-2001 GMC Jimmy models, as identified by GM.
4L60 Transmission Parts and Accessories Guide
Coming SoonThis guide lists compatible parts and accessories for the 4L60 transmission, including torque converters, shift kits, and replacement components.
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Important information about using this content
Always refer to your vehicle's service manual and take appropriate safety precautions when performing any maintenance or repairs.
General 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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