GMC Yukon 2007-2014 6L80 Transmission Specifications
This document provides detailed specifications for the 6L80 transmission used in the 2007-2014 GMC Yukon. It includes critical data such as gear ratios, torque capacity, fluid type, and service intervals, offering valuable insights for maintenance, repair, and performance upgrades. Designed for automotive enthusiasts, technicians, and DIYers, these specifications help ensure proper transmission function, enhance vehicle longevity, and support informed decision-making for repairs and upgrades. Whether you're troubleshooting issues, planning a rebuild, or optimizing performance, this comprehensive guide serves as an essential reference for understanding the 6L80 transmission's capabilities and requirements.
Overview Specifications
This document provides detailed specifications and technical information about the 6L80 transmission used in the 2007-2014 GMC Yukon. It is designed to assist users in understanding the transmission's features, performance, and maintenance requirements. The content is organized into major sections and subsections for easy navigation and reference. Use the search and navigation instructions to quickly find the information you need.
How to Use
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Navigate through the document by scrolling through the major sections and subsections. Each section is labeled with a title and description to help you find the information you need quickly. Use the table of contents or quick reference section for a summary of key specifications.
Key Specifications
Gear Ratios
4.03 to 0.67
Torque Capacity
664 lb-ft
Fluid Capacity
11.2 quarts
Weight
225 lbs
Fluid Type
Dexron VI
Available Specifications
General Information
This section provides an overview of the 6L80 transmission, including its introduction, applications, and key features. It also covers the transmission's compatibility with various GMC Yukon models from 2007 to 2014.
General Information
This section provides an overview of the 6L80 transmission, including its introduction, applications, and key features. It also covers the transmission's compatibility with various GMC Yukon models from 2007 to 2014.
Introduction
- 6-speed automatic transmission
- Developed by General Motors
- Used in 2007-2014 GMC Yukon models
- Designed for improved fuel efficiency and performance
- Features a wide gear ratio spread
- Supports both 2WD and 4WD configurations
Applications
- Compatible with V8 engines
- Used in GMC Yukon, Yukon XL, and Denali models
- Supports towing and heavy-duty applications
- Adaptable to various driving conditions
- Available in both gasoline and hybrid variants
Technical Specifications
This section details the technical specifications of the 6L80 transmission, including gear ratios, torque capacity, and fluid requirements. It also provides information on the transmission's dimensions and weight.
Technical Specifications
This section details the technical specifications of the 6L80 transmission, including gear ratios, torque capacity, and fluid requirements. It also provides information on the transmission's dimensions and weight.
Gear Ratios
- 1st Gear: 4.03
- 2nd Gear: 2.36
- 3rd Gear: 1.53
- 4th Gear: 1.15
- 5th Gear: 0.85
- 6th Gear: 0.67
Torque Capacity
- Maximum torque capacity: 664 lb-ft
- Designed for high-performance applications
- Supports heavy towing and payloads
- Enhanced clutch materials for durability
- Optimized for V8 engine output
Fluid Requirements
- Recommended fluid: Dexron VI
- Fluid capacity: 11.2 quarts
- Regular fluid changes required
- Fluid temperature monitoring system
- Sealed for life in some models
Maintenance and Service
This section covers maintenance and service recommendations for the 6L80 transmission. It includes information on fluid changes, filter replacement, and common issues to watch for.
Maintenance and Service
This section covers maintenance and service recommendations for the 6L80 transmission. It includes information on fluid changes, filter replacement, and common issues to watch for.
Fluid Changes
- Change fluid every 50,000 miles
- Use only Dexron VI transmission fluid
- Check fluid level regularly
- Use a scan tool for accurate fluid level checks
- Follow manufacturer's service intervals
Common Issues
- Shift solenoid failures
- Torque converter clutch issues
- Fluid leaks from seals
- Delayed or harsh shifting
- Transmission overheating
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Transmission Specifications
Overview
- Type
- Automatic
- Configuration
- 6-speed longitudinal
- Platform
- GM GMT900
- Material
- Aluminum casing
- Location
- Rear-wheel drive
Dimensions
- Length
- 28.5 inches (724 mm)
- Width
- 20.3 inches (516 mm)
- Height
- 16.7 inches (424 mm)
- Weight
- 187 lbs (85 kg)
- input Shaft Diameter
- 1.18 inches (30 mm)
- Output Shaft Diameter
- 1.26 inches (32 mm)
- Fluid Capacity
- 12 quarts (11.4 liters)
Materials
- Casing
- Aluminum alloy
- Gears
- Hardened steel
- Clutch Packs
- Composite friction materials
- Seals
- Viton rubber
Features
- Performance
-
- Wide gear ratio spread
- Adaptive shift control
- Tow/Haul mode
- Manual shift mode
- Efficiency
-
- Reduced internal friction
- Optimized gear ratios
- Lock-up clutch in all gears
- Durability
-
- Heavy-duty clutch packs
- Reinforced input shaft
- Advanced lubrication system
- Technology
-
- Electronically controlled
- CAN bus communication
- Integrated temperature sensor
Safety Features
- Protection
-
- Overheat protection
- Overload protection
- Fail-safe mode
- Monitoring
-
- Real-time diagnostics
- Fluid level sensor
- Shift quality monitoring
Comfort Features
- Smoothness
-
- Seamless shift transitions
- Low noise levels
- Vibration dampening
- Convenience
-
- Automatic shift scheduling
- Driver-selectable modes
- Cold-start optimization
Accessories
- Cooling
-
- Transmission cooler
- Cooling lines
- Thermostatic valve
- Mounting
-
- Transmission mounts
- Crossmember
- Bolt kit
- Controls
-
- Shift cable
- Range selector
- Electronic control module
Maintenance
- Service interval
- Every 50,000 miles or 48 months
- Service Items
-
- Fluid and filter change
- Pan inspection
- Seal inspection
- Shift quality check
- Diagnostic scan
- Maintenance Notes
- Use only Dexron VI transmission fluid
Warranty
- Basic
- Miles: 36,000Years: 3Coverage: Bumper-to-bumper
- Powertrain
- Miles: 100,000Years: 5Coverage: Transmission and drivetrain
- Corrosion
- Miles: UnlimitedYears: 6Coverage: Perforation only
- Warranty Terms
- Transferable to subsequent owners
Production Details
- Manufacturer
- General Motors
- Manufacturing Process
-
- Casting
- Machining
- Assembly
- Testing
- Quality Control
- inspection: 100% component testingStandards: ISO 9001 certifiedTesting: Durability and performance validation
- Sustainability Practices
-
- Recycled materials
- Energy-efficient manufacturing
- Waste reduction programs
- Production Metrics
- Units Per Day: 1,200Defect Rate: Less than 0.1%Lead Time: 48 hours
Service Information for 6l80 transmission Service
Maintenance and service requirements specific to this component
- Fluid and filter replacement
- Pan gasket inspection
- Seal integrity check
- Shift quality assessment
- Diagnostic system scan
Use only Dexron VI transmission fluid
- Complete fluid flush
- Clutch pack inspection
- Valve body check
- Torque converter testing
- Mounting hardware inspection
Special tools required for valve body inspection
- Transmission overhaul
- Clutch pack replacement
- Seal replacement
- Solenoid testing
- Performance validation
Consider transmission replacement if major issues are found
Common Questions
Find answers to common questions about torque specifications
Q1 Is the 6L80 transmission compatible with other GM models?
Is the 6L80 transmission compatible with other GM models?
The 6L80 transmission is compatible with several GM models from 2007 to 2014, including the GMC Yukon, Chevrolet Silverado, and Cadillac Escalade. It is designed for vehicles with V8 engines and rear-wheel or all-wheel drive configurations. However, compatibility depends on the specific model year and drivetrain setup. Always verify the transmission's part number and consult a professional to ensure proper fitment.
Q2 What are the maintenance requirements for the 6L80 transmission?
What are the maintenance requirements for the 6L80 transmission?
Regular maintenance for the 6L80 transmission includes fluid and filter changes every 45,000 to 60,000 miles. Use only Dexron VI automatic transmission fluid. Inspect for leaks, check the fluid level, and ensure the transmission is operating within the recommended temperature range. Periodic inspections of the torque converter, solenoids, and valve body are also recommended to prevent premature wear and failure.
Q3 How do I replace the 6L80 transmission in my GMC Yukon?
How do I replace the 6L80 transmission in my GMC Yukon?
To replace the 6L80 transmission, begin by disconnecting the battery and removing the driveshaft, exhaust, and crossmember. Support the transmission with a jack, disconnect the wiring harness and cooler lines, and remove the bellhousing bolts. Lower the transmission carefully and install the new unit in reverse order. Ensure proper alignment and torque specifications, and refill with Dexron VI fluid. Test for leaks and proper operation.
Q4 What are common troubleshooting steps for the 6L80 transmission?
What are common troubleshooting steps for the 6L80 transmission?
Common issues with the 6L80 transmission include harsh shifting, slipping, or failure to engage. Begin troubleshooting by checking the transmission fluid level and condition. Inspect for error codes using a diagnostic scanner. Common fixes include replacing worn solenoids, addressing valve body issues, or updating the transmission control module software. If problems persist, consult a professional for a detailed inspection.
Q5 How can I optimize the performance of my 6L80 transmission?
How can I optimize the performance of my 6L80 transmission?
To optimize the 6L80 transmission, ensure regular maintenance and use high-quality Dexron VI fluid. Consider upgrading to a performance torque converter or aftermarket shift kits for improved responsiveness. Install an auxiliary cooler to manage temperature, especially under heavy loads. Regularly update the transmission control module software to benefit from manufacturer improvements and ensure smooth operation.
Factory Service Resources
Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.
2007-2014 GMC Yukon 6L80 Transmission Service Manual
Coming SoonThis manual provides detailed instructions for servicing and repairing the 6L80 transmission, including disassembly, assembly, and troubleshooting procedures.
Technical Service Bulletin: 6L80 Transmission Shift Quality Update
Coming SoonThis bulletin addresses common shift quality issues in the 6L80 transmission and provides updated software calibration instructions.
6L80 Transmission Parts and Accessories Catalog
Coming SoonThis catalog lists all available parts and accessories for the 6L80 transmission, including filters, gaskets, and performance upgrades.
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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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