Buick LaCrosse 2010-2016 6T45 Transmission Specifications
This document provides detailed specifications for the 6T45 transmission used in the 2010-2016 Buick LaCrosse. It includes technical data such as gear ratios, torque capacity, fluid requirements, and maintenance intervals. The purpose of these specifications is to assist automotive technicians, enthusiasts, and owners in understanding the transmission's performance, ensuring proper maintenance, and diagnosing potential issues. By providing accurate and comprehensive information, this guide helps users optimize the transmission's lifespan and performance. Whether you're performing routine maintenance, planning upgrades, or troubleshooting, this resource is an invaluable tool for maintaining the reliability and efficiency of your Buick LaCrosse.
Overview Specifications
This document provides detailed specifications and technical information about the 6T45 transmission used in the 2010-2016 Buick LaCrosse. It is designed for automotive professionals, enthusiasts, and technicians who need accurate and comprehensive data. The document is organized into sections covering general information, performance, maintenance, and troubleshooting. Use the search and navigation tools to quickly locate specific details.
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Key Specifications
Transmission Type
6-speed automatic
Torque Capacity
250 lb-ft
Compatible Engines
2.4L, 3.0L
Fluid Type
Dexron VI
Service Interval
50,000 miles
Available Specifications
General Information
This section provides an overview of the 6T45 transmission, including its design, compatibility, and key features. It also covers the transmission's role in the 2010-2016 Buick LaCrosse and its performance in various driving conditions.
General Information
This section provides an overview of the 6T45 transmission, including its design, compatibility, and key features. It also covers the transmission's role in the 2010-2016 Buick LaCrosse and its performance in various driving conditions.
Design and Compatibility
- 6-speed automatic transmission
- Front-wheel drive configuration
- Compatible with 2.4L and 3.0L engines
- Hydra-Matic transmission family
- Designed for smooth shifting and fuel efficiency
- Adaptive shift control system
Key Features
- Electronic precision shift
- Integrated torque converter clutch
- Enhanced durability with improved materials
- Low internal friction for better efficiency
- Compact and lightweight design
- Advanced thermal management system
Performance Specifications
This section details the performance metrics of the 6T45 transmission, including its torque capacity, shift speeds, and overall efficiency. It also covers how the transmission enhances the driving experience in the Buick LaCrosse.
Performance Specifications
This section details the performance metrics of the 6T45 transmission, including its torque capacity, shift speeds, and overall efficiency. It also covers how the transmission enhances the driving experience in the Buick LaCrosse.
Torque and Power Handling
- Maximum torque capacity: 250 lb-ft
- Designed for engines up to 300 hp
- Optimized for mid-size sedans
- Handles high torque loads efficiently
- Smooth power delivery across all gears
- Supports aggressive acceleration
Shift Speeds and Efficiency
- Shift times under 0.5 seconds
- Improved fuel economy up to 10%
- Reduced shift shock and vibration
- Enhanced response in sport mode
- Adaptive learning for driver behavior
- Efficient gear ratios for highway cruising
Maintenance and Troubleshooting
This section provides guidelines for maintaining the 6T45 transmission and troubleshooting common issues. It includes recommended service intervals, fluid specifications, and diagnostic tips.
Maintenance and Troubleshooting
This section provides guidelines for maintaining the 6T45 transmission and troubleshooting common issues. It includes recommended service intervals, fluid specifications, and diagnostic tips.
Maintenance Guidelines
- Transmission fluid change every 50,000 miles
- Use Dexron VI automatic transmission fluid
- Inspect seals and gaskets during service
- Check for leaks and wear regularly
- Replace filter with fluid change
- Monitor transmission temperature during operation
Common Issues and Solutions
- Delayed or harsh shifting: Check fluid level and condition
- Transmission slipping: Inspect clutch packs and solenoids
- Noisy operation: Examine torque converter and bearings
- Check engine light: Perform diagnostic scan for codes
- Fluid leaks: Replace damaged seals and gaskets
- Overheating: Ensure proper cooling system function
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Transmission Specifications
Overview
- Type
- Automatic
- Configuration
- 6-speed
- Platform
- GM FWD
- Material
- Aluminum casing
- Location
- Front-wheel drive
Dimensions
- Length
- 22.5 inches (571.5 mm)
- Width
- 15.3 inches (388.6 mm)
- Height
- 13.2 inches (335.3 mm)
- Weight
- 145 lbs (65.8 kg)
- input Shaft Diameter
- 1.12 inches (28.4 mm)
- Output Shaft Diameter
- 1.25 inches (31.8 mm)
- Fluid Capacity
- 7.4 quarts (7 liters)
Materials
- Casing
- Aluminum alloy
- Gears
- Hardened steel
- Clutch Plates
- Composite friction material
- Seals
- Nitrile rubber
Features
- Performance
-
- Electronic shift control
- Adaptive shift algorithms
- Quick shift response
- Efficiency
-
- Optimized gear ratios
- Reduced internal friction
- Lightweight construction
- Durability
-
- High-strength gear materials
- Robust casing design
- Advanced cooling system
- Technology
-
- TapShift manual control
- Integrated TCM (Transmission Control Module)
- CAN bus communication
- Comfort
-
- Smooth shift transitions
- Quiet operation
- Low vibration
Safety Features
- Electronic Protection
-
- Overheat protection
- Overload protection
- Fail-safe mode
- Mechanical Protection
-
- Durable clutch design
- Reinforced gear teeth
- Sealed bearings
Comfort Features
- Noise Reduction
-
- Sound-dampening materials
- Precision gear meshing
- Sealed casing
- Ride Quality
-
- Smooth acceleration
- Seamless gear shifts
- Low vibration levels
Accessories
- Upgrades
-
- Performance shift kit
- Enhanced cooling system
- Heavy-duty clutch pack
- Maintenance
-
- Transmission fluid filter
- Fluid pan gasket
- Seal kit
- Tools
-
- Transmission jack
- Fluid pump
- Diagnostic scanner
Maintenance
- Service interval
- Every 50,000 miles
- Service Items
-
- Fluid and filter replacement
- Seal inspection
- Shift linkage adjustment
- TCM software update
- Cooling system check
- Maintenance Notes
- Use only Dexron VI transmission fluid
Warranty
- Basic
- Miles: 36,000Years: 3Coverage: Bumper-to-bumper
- Powertrain
- Miles: 60,000Years: 5Coverage: Transmission internals
- Corrosion
- Miles: 100,000Years: 6Coverage: Casing and external components
- Emissions
- Miles: 50,000Years: 2Coverage: Emission-related components
Production Details
- Manufacturer
- General Motors
- Manufacturing Process
-
- Precision casting
- CNC machining
- Automated assembly
- Quality Control
- inspection: 100% component testingTesting: Dyno and road simulationCertifications: ISO 9001
- Sustainability Practices
-
- Recyclable materials
- Energy-efficient production
- Waste reduction programs
- Production Metrics
- Units Per Year: 500,000Defect Rate: 0.1%Production Sites: 3
Service Information for 6t45 transmission Service
Maintenance and service requirements specific to this component
- Transmission fluid and filter replacement
- Seal and gasket inspection
- Shift linkage adjustment
- TCM software update
- Cooling system check
Use only Dexron VI transmission fluid
- Complete fluid flush
- Clutch pack inspection
- Bearing and shaft check
- Valve body inspection
- Cooling system flush
Special tools required for clutch inspection
- Transmission overhaul
- Clutch pack replacement
- Bearing and seal replacement
- Valve body rebuild
- Full system diagnostics
Major service requires specialized equipment
Common Questions
Find answers to common questions about torque specifications
Q1 What are the technical specifications of the 6T45 transmission in the 2010-2016 Buick LaCrosse?
What are the technical specifications of the 6T45 transmission in the 2010-2016 Buick LaCrosse?
The 6T45 is a 6-speed automatic transmission designed for front-wheel-drive vehicles. It features a torque converter, clutch-to-clutch shifting, and electronic controls for smooth gear transitions. Compatible with the 2.4L Ecotec I4 and 3.6L V6 engines, it has a maximum torque capacity of 258 lb-ft. Fluid capacity is approximately 9.9 quarts of GM Dexron VI ATF. It is not compatible with rear-wheel-drive applications.
Q2 What maintenance is required for the 6T45 transmission?
What maintenance is required for the 6T45 transmission?
Regular maintenance for the 6T45 includes fluid changes every 30,000 to 60,000 miles, depending on driving conditions. The transmission pan gasket and filter should be replaced during fluid changes. Inspect the cooler lines and connections annually. Use only GM Dexron VI ATF to ensure compatibility and optimal performance. Avoid using friction modifiers or additives not approved by GM.
Q3 How do I replace the 6T45 transmission?
How do I replace the 6T45 transmission?
Replacing the 6T45 requires specialized tools and expertise. Steps include draining the transmission fluid, disconnecting electrical connectors, removing the transmission cooler lines, and detaching the transmission from the engine and crossmember. Use a transmission jack to lower the unit. Replace the torque converter and ensure proper alignment during reinstallation. Refill with GM Dexron VI ATF and perform a transmission reset using a scan tool.
Q4 How do I troubleshoot common issues with the 6T45 transmission?
How do I troubleshoot common issues with the 6T45 transmission?
Common issues include slipping, hesitation, or the transmission not engaging. Check the fluid level and condition, as low or degraded fluid can cause poor performance. Use a scan tool to retrieve trouble codes from the TCM. Inspect the transmission pan for leaks and ensure proper electrical connections. If issues persist, consider replacing the solenoid pack or torque converter. Always refer to a factory service manual for detailed diagnostics.
Q5 How can I optimize the performance of the 6T45 transmission?
How can I optimize the performance of the 6T45 transmission?
To optimize performance, ensure proper fluid levels and condition by using GM Dexron VI ATF. Avoid excessive heat buildup by maintaining a clean transmission cooler and ensuring proper airflow. Drive in a manner that avoids extreme shifts in load or RPM. Consider updating the transmission software if available. Regular maintenance, such as filter replacements, can also improve long-term reliability and 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.
2010-2016 Buick LaCrosse 6T45 Transmission Service Manual
Coming SoonComprehensive guide covering transmission repair, maintenance, and diagnostics for the 6T45 in the Buick LaCrosse.
GM Technical Service Bulletin - 6T45 Transmission Updates
Coming SoonOfficial updates and technical bulletins for the 6T45 transmission, including software updates and known issue resolutions.
Buick LaCrosse 6T45 Transmission Parts Catalog
Coming SoonDetailed listing of genuine GM parts and accessories for the 6T45 transmission, including filters, gaskets, and solenoid packs.
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General Information
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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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