GMC Terrain 2010-2017 6T45 Transmission Specifications
This document provides detailed specifications for the 6T45 transmission used in the 2010-2017 GMC Terrain. It includes technical data such as gear ratios, torque capacity, fluid type, and maintenance intervals. The purpose of this document is to assist automotive professionals, enthusiasts, and GMC Terrain owners in understanding the transmission's design, performance, and maintenance requirements. It serves as a valuable resource for troubleshooting, repair, and upgrade planning, ensuring optimal performance and longevity of the transmission. Whether you're a mechanic, a DIYer, or a GMC Terrain owner, this specification guide offers essential insights into one of the vehicle's critical components.
Overview Specifications
This document provides detailed specifications and technical information about the 6T45 transmission used in the 2010-2017 GMC Terrain. It is designed to assist technicians, enthusiasts, and owners in understanding the transmission's features, maintenance, and performance. Use the search and navigation instructions to quickly locate specific details. The sections cover key aspects of the transmission, including design, operation, and troubleshooting.
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Key Specifications
Transmission Type
6-speed automatic
Torque Capacity
250 lb-ft
Fluid Type
Dexron VI
Fluid Capacity
7.4 quarts
Gear Ratios
4.48:1 to 0.74:1
Available Specifications
Design and Components
This section outlines the design features and key components of the 6T45 transmission. It includes details about the construction, materials, and internal mechanisms that contribute to its performance and durability.
Design and Components
This section outlines the design features and key components of the 6T45 transmission. It includes details about the construction, materials, and internal mechanisms that contribute to its performance and durability.
Transmission Case and Housing
- Aluminum alloy construction for lightweight durability
- Sealed housing to prevent fluid leaks
- Integrated mounting points for engine compatibility
- Precision-machined surfaces for optimal sealing
Internal Gear Train
- Six-speed gear configuration
- High-strength steel gears for durability
- Optimized gear ratios for fuel efficiency
- Smooth shifting mechanism for enhanced performance
Operation and Performance
This section focuses on the operational characteristics and performance metrics of the 6T45 transmission. It includes details about shifting behavior, torque handling, and efficiency under various driving conditions.
Operation and Performance
This section focuses on the operational characteristics and performance metrics of the 6T45 transmission. It includes details about shifting behavior, torque handling, and efficiency under various driving conditions.
Shifting Dynamics
- Adaptive shift control for smooth transitions
- Quick response to throttle inputs
- Manual shift mode for driver control
- Optimized shift points for fuel economy
Torque Capacity
- Handles up to 250 lb-ft of torque
- Designed for front-wheel drive applications
- Robust clutch packs for consistent performance
- Efficient torque transfer for improved acceleration
Maintenance and Troubleshooting
This section provides guidance on maintaining the 6T45 transmission and diagnosing common issues. It includes tips for fluid changes, inspection intervals, and troubleshooting procedures.
Maintenance and Troubleshooting
This section provides guidance on maintaining the 6T45 transmission and diagnosing common issues. It includes tips for fluid changes, inspection intervals, and troubleshooting procedures.
Fluid Maintenance
- Use Dexron VI transmission fluid
- Fluid change interval: 50,000 miles
- Check fluid level using dipstick or electronic sensor
- Monitor fluid condition for signs of contamination
Common Issues
- Delayed or harsh shifting
- Transmission fluid leaks
- Check engine light with transmission codes
- Whining or grinding noises during operation
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Transmission Specifications
Overview
- Type
- Automatic
- Configuration
- 6-speed
- Platform
- Front-wheel drive/All-wheel drive
- Material
- Aluminum casing
- Location
- Front-mounted
Dimensions
- Length
- 28.5 inches (724 mm)
- Width
- 15.7 inches (399 mm)
- Height
- 12.2 inches (310 mm)
- Weight
- 187 lbs (85 kg)
- input Shaft Length
- 5.9 inches (150 mm)
- Output Shaft Length
- 6.3 inches (160 mm)
- Fluid Capacity
- 7.4 quarts (7 liters)
Materials
- Casing
- Aluminum alloy
- Gears
- Hardened steel
- Clutch Plates
- Composite friction material
- Seals
- Viton rubber
Features
- Shifting
-
- Hydraulic actuation
- Adaptive shift control
- Manual shift mode
- Cooling
-
- Integrated transmission cooler
- Thermal management system
- Efficiency
-
- Low internal friction design
- Optimized gear ratios
- Electronic pressure control
- Durability
-
- Reinforced internal components
- High-strength alloy gears
- Robust clutch design
Safety Features
- Electronic Protection
-
- Overheat protection
- Slip detection
- Fail-safe mode
- Mechanical Protection
-
- Shear-resistant gears
- Reinforced casing
Comfort Features
- Smoothness
-
- Precise shift timing
- Minimized shift shock
- Quietness
-
- Helical cut gears
- Vibration dampening
- Convenience
-
- Maintenance-free design
- Easy diagnostic access
Accessories
- Mounting
-
- Transmission mount kit
- Bolt set
- Alignment tool
- Cooling
-
- External cooler kit
- Cooler lines
- Thermostat
- Maintenance
-
- Fluid exchange kit
- Filter kit
- Seal kit
Maintenance
- Service intervals
-
- Every 30,000 miles (48,000 km) or 24 months
- Every 60,000 miles (96,000 km) or 48 months
- Every 100,000 miles (160,000 km) or 84 months
- Service Items
-
- Fluid and filter replacement
- Seal inspection
- Clutch wear check
- Electronic system diagnostics
- Notes
- Use only Dexron VI transmission fluid for optimal performance.
Warranty
- Basic
- Miles: 36,000Years: 3Coverage: Bumper-to-bumper
- Powertrain
- Miles: 60,000Years: 5Coverage: Transmission and drivetrain
- Corrosion
- Miles: 100,000Years: 6Coverage: Perforation only
- Emissions
- Miles: 80,000Years: 8Coverage: Federal emissions components
Production Details
- Manufacturer
- General Motors
- Manufacturing Process
-
- Precision CNC machining
- Heat treatment of gears
- Automated assembly
- Quality Control
- inspection: 100% component testingTolerance: ±0.001 inches (0.025 mm)
- Sustainability
-
- Recyclable materials
- Energy-efficient manufacturing
- Production Metrics
- Units Per Day: 500Defect Rate: 0.1%
Service Information for 6t45 transmission Service
Maintenance and service requirements specific to this component
- Inspect transmission fluid level
- Check for leaks
- Perform electronic diagnostic scan
- Replace transmission filter
Ensure proper fluid level and condition.
- Replace transmission fluid
- Inspect clutch wear
- Check shift solenoids
- Test torque converter
Use only Dexron VI fluid for replacement.
- Complete transmission flush
- Replace all seals
- Inspect gear wear
- Perform pressure test
Consider professional service for major intervals.
Common Questions
Find answers to common questions about torque specifications
Q1 Is the 6T45 transmission compatible with all 2010-2017 GMC Terrain models?
Is the 6T45 transmission compatible with all 2010-2017 GMC Terrain models?
The 6T45 transmission is compatible with 2010-2017 GMC Terrain models equipped with the 2.4L or 3.0L engines. It is not compatible with models featuring the 3.6L engine, which uses the 6T70 transmission. Always verify your vehicle's VIN and engine specifications before purchasing or installing a transmission to ensure compatibility.
Q2 What maintenance is required for the 6T45 transmission in a GMC Terrain?
What maintenance is required for the 6T45 transmission in a GMC Terrain?
Regular maintenance for the 6T45 transmission includes fluid and filter changes every 45,000 to 60,000 miles. Inspect for leaks, ensure proper fluid levels, and check for software updates from GMC. Avoid harsh driving conditions to extend transmission life. Following the manufacturer’s maintenance schedule is crucial for optimal performance and longevity.
Q3 How do I replace the 6T45 transmission in a GMC Terrain?
How do I replace the 6T45 transmission in a GMC Terrain?
To replace the 6T45 transmission, first disconnect the battery, drain the fluid, and remove the driveshaft and exhaust components. Support the engine and transmission, then unbolt the transmission mounts and crossmember. Disconnect electrical connectors and shift linkage, then carefully lower the transmission. Installation is the reverse process, ensuring all connections are secure and fluids are refilled.
Q4 What should I do if my 6T45 transmission is slipping or shifting hard?
What should I do if my 6T45 transmission is slipping or shifting hard?
If your 6T45 transmission is slipping or shifting hard, first check the fluid level and condition. Low or contaminated fluid can cause these issues. Inspect for leaks, damaged wiring, or faulty solenoids. If the problem persists, scan for diagnostic trouble codes (DTCs) and consult a professional technician for further diagnosis and repair.
Q5 How can I optimize the performance of my 6T45 transmission?
How can I optimize the performance of my 6T45 transmission?
To optimize the 6T45 transmission’s performance, use only GM-approved Dexron VI transmission fluid. Regularly check and maintain proper fluid levels. Avoid aggressive driving and heavy towing. Consider updating the transmission control module (TCM) software for improved shifting and efficiency. Regular inspections and timely repairs also contribute to enhanced 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.
GMC Terrain 6T45 Transmission Service Manual
Coming SoonThis manual provides detailed instructions for servicing and maintaining the 6T45 transmission in 2010-2017 GMC Terrain models.
6T45 Transmission Technical Service Bulletin (TSB)
Coming SoonThis bulletin addresses common issues and updates for the 6T45 transmission, including software updates and repair procedures.
GMC Terrain Transmission Parts Catalog
Coming SoonThis catalog lists all available parts and accessories for the 6T45 transmission, including part numbers and compatibility details.
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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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