Pontiac Pontiac G6 2005-2010 4T45 Transmission Specifications
This document provides detailed specifications for the 4T45 transmission used in the 2005-2010 Pontiac G6. It includes critical data such as gear ratios, torque capacity, fluid type, and service intervals. These specifications are essential for vehicle maintenance, repair, and performance tuning. The information is particularly valuable for automotive technicians, enthusiasts, and owners looking to understand the technical aspects of their vehicle's transmission. By referencing this document, readers can ensure proper maintenance, diagnose issues accurately, and make informed decisions about upgrades or repairs. The 4T45 transmission is known for its reliability and efficiency, making this resource a must-have for anyone working with or owning a Pontiac G6 from this generation.
Overview Specifications
This document provides detailed specifications and technical information about the 4T45 transmission used in the 2005-2010 Pontiac G6. It is designed to assist technicians, enthusiasts, and owners in understanding the transmission's design, operation, and maintenance. The guide is organized into sections covering key aspects such as design features, performance, and maintenance tips. Use the search and navigation instructions to quickly find the information you need.
How to Use
Use the search function to locate specific terms or phrases within the document. Enter keywords like 'torque capacity' or 'fluid type' to find relevant sections quickly.
Navigate through the document by scrolling or using the table of contents. Each major section is clearly labeled, and subsections are organized for easy access to detailed information.
Key Specifications
Torque Capacity
258 lb-ft
Gear Ratios
2.84:1 to 0.70:1
Fluid Type
Dexron VI
Fluid Capacity
7.4 quarts
Service Interval
50,000 miles
Available Specifications
Design and Construction
This section covers the design features and construction details of the 4T45 transmission. It includes information about the transmission's components, materials, and assembly.
Design and Construction
This section covers the design features and construction details of the 4T45 transmission. It includes information about the transmission's components, materials, and assembly.
Transmission Components
- Four-speed automatic transmission
- Electronically controlled
- Hydraulic torque converter
- Planetary gear sets
- Sealed transmission case
- Integrated valve body
Materials and Durability
- High-strength steel gears
- Aluminum alloy case
- Durable clutch materials
- Corrosion-resistant coatings
- Heat-treated components
- Extended service life
Performance Specifications
This section provides detailed performance specifications for the 4T45 transmission, including torque capacity, gear ratios, and shift characteristics.
Performance Specifications
This section provides detailed performance specifications for the 4T45 transmission, including torque capacity, gear ratios, and shift characteristics.
Torque and Power Handling
- Torque capacity: 258 lb-ft
- Designed for 3.5L V6 engines
- Smooth power delivery
- Efficient power transfer
- Optimized for fuel efficiency
- Reliable under high load
Gear Ratios
- First gear: 2.84:1
- Second gear: 1.60:1
- Third gear: 1.00:1
- Fourth gear: 0.70:1
- Reverse gear: 2.07:1
- Final drive ratio: 3.69:1
Maintenance and Service
This section outlines maintenance procedures and service recommendations for the 4T45 transmission. It includes fluid specifications, inspection intervals, and common troubleshooting tips.
Maintenance and Service
This section outlines maintenance procedures and service recommendations for the 4T45 transmission. It includes fluid specifications, inspection intervals, and common troubleshooting tips.
Fluid Specifications
- Recommended fluid: Dexron VI
- Fluid capacity: 7.4 quarts
- Regular fluid checks
- Fluid change interval: 50,000 miles
- Use of synthetic fluid
- Monitor for fluid discoloration
Common Issues and Fixes
- Delayed shifts: Check fluid level
- Slipping gears: Inspect clutches
- Transmission overheating: Check cooler lines
- Unusual noises: Inspect torque converter
- Check for error codes with OBD-II scanner
- Regularly inspect seals and gaskets
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Transmission Specifications
Overview
- Type
- Automatic
- Configuration
- Front-wheel drive
- Platform
- GM Epsilon
- Material
- Aluminum and steel composite
- Location
- Front-engine, transverse mount
Dimensions
- Length
- 22.5 inches (571.5 mm)
- Width
- 18.3 inches (464.8 mm)
- Height
- 16.7 inches (424.2 mm)
- Weight
- 135 lbs (61.2 kg)
- input Shaft Diameter
- 0.75 inches (19.05 mm)
- Output Shaft Diameter
- 1.25 inches (31.75 mm)
- Oil Capacity
- 7.4 quarts (7.0 liters)
Materials
- Housing
- Aluminum alloy
- Gears
- Hardened steel
- Clutch Plates
- Composite friction material
- Seals
- Viton rubber
Features
- Performance
-
- Four-speed automatic
- Electronic shift control
- Adaptive shift programming
- Efficiency
-
- Lock-up torque converter
- Optimized gear ratios
- Reduced internal friction
- Durability
-
- Hardened steel gears
- High-strength aluminum housing
- Enhanced cooling system
- Control
-
- Electronic pressure control
- Manual shift mode
- Shift timing adjustments
- integration
-
- Compatible with GM vehicle systems
- Integrated TCM (Transmission Control Module)
- OBD-II diagnostics support
Safety Features
- Mechanical
-
- Overheat protection
- Fail-safe mode
- Electronic
-
- Shift interlock system
- Transmission fluid level sensor
- Driver Assist
-
- Downshift protection
- Grade braking assist
Comfort Features
- Smoothness
-
- Adaptive shift smoothing
- Reduced vibration
- Noise
-
- Quiet operation
- Sound dampening materials
- Convenience
-
- Seamless gear transitions
- Low maintenance requirements
- Adjustability
-
- Customizable shift points
- Adaptive learning
Accessories
- Cooling
-
- Transmission cooler
- Cooler lines
- Temperature sensor
- Mounting
-
- Transmission mount
- Mounting bolts
- Bracket kit
- Electronics
-
- TCM module
- Wiring harness
- Solenoid pack
Maintenance
- Service interval
- Every 30,000 miles or 24 months
- Service Items
-
- Fluid and filter replacement
- Seal inspection
- Solenoid testing
- Mount inspection
- Cooler line check
- Maintenance Notes
- Use only Dexron VI transmission fluid.
Warranty
- Basic
- Miles: 36,000Years: 3Coverage: Bumper-to-bumper
- Powertrain
- Miles: 60,000Years: 5Coverage: Transmission and drivetrain
- Corrosion
- Miles: 100,000Years: 6Coverage: Rust perforation
- Emissions
- Miles: 80,000Years: 8Coverage: Emission control components
- Warranty Terms
- Transferable to subsequent owners with no deductible.
Production Details
- Manufacturer
- General Motors
- Manufacturing Process
-
- Precision casting
- CNC machining
- Automated assembly
- Quality Control
- Testing: Durability testing, Shift performance testing, Leak testingStandards: ISO 9001, GM global standards
- Sustainability Practices
-
- Recycled materials usage
- Energy-efficient manufacturing
- Waste reduction programs
- Production Metrics
-
- Annual production capacity: 500,000 units
- Defect rate: <0.1%
- Lead time: 4 weeks
Service Information for 4t45 transmission Service
Maintenance and service requirements specific to this component
- Replace transmission fluid and filter
- Inspect seals and gaskets
- Check transmission mount
- Test solenoid operation
Use only Dexron VI transmission fluid.
- Inspect and clean cooler lines
- Check TCM for errors
- Test shift performance
- Inspect clutch plates
Ensure proper cooling system function.
- Replace clutch packs if needed
- Inspect and replace worn gears
- Overhaul valve body
- Conduct full system diagnostics
Requires specialized tools and training.
Common Questions
Find answers to common questions about torque specifications
Q1 Is the 4T45 transmission compatible with other Pontiac models?
Is the 4T45 transmission compatible with other Pontiac models?
The 4T45 transmission was specifically designed for the 2005-2010 Pontiac G6 and is not directly compatible with other Pontiac models without significant modifications. It is a 4-speed automatic transmission optimized for front-wheel-drive vehicles. For compatibility with other models, consult the manufacturer’s technical specifications or a certified mechanic to ensure proper fit and functionality.
Q2 What are the maintenance requirements for the 4T45 transmission?
What are the maintenance requirements for the 4T45 transmission?
Regular maintenance for the 4T45 transmission includes checking and replacing the transmission fluid every 30,000 to 60,000 miles, inspecting for leaks, and ensuring the transmission filter is clean. Additionally, monitor for unusual noises or shifting issues. Adhering to the manufacturer’s maintenance schedule and using recommended fluids will prolong the transmission’s lifespan and ensure optimal performance.
Q3 How do I replace the 4T45 transmission in my Pontiac G6?
How do I replace the 4T45 transmission in my Pontiac G6?
Replacing the 4T45 transmission involves lifting the vehicle, disconnecting the battery, removing the drive axles, and detaching the transmission mounts. Drain the transmission fluid, disconnect wiring harnesses, and unbolt the transmission from the engine. Carefully lower the old transmission and install the new one by reversing the steps. Ensure all connections are secure and refill with the appropriate transmission fluid.
Q4 What should I do if my 4T45 transmission is slipping?
What should I do if my 4T45 transmission is slipping?
Transmission slipping can be caused by low fluid levels, worn clutch plates, or a faulty torque converter. Begin by checking and topping off the transmission fluid. If the issue persists, inspect the transmission filter and replace it if necessary. For persistent problems, consult a professional mechanic to diagnose and repair internal components such as the clutch packs or solenoids.
Q5 How can I optimize the performance of my 4T45 transmission?
How can I optimize the performance of my 4T45 transmission?
To optimize the 4T45 transmission’s performance, use high-quality transmission fluid and ensure it is changed regularly. Avoid aggressive driving and excessive towing, as these can strain the transmission. Installing a transmission cooler can help manage heat, and periodic software updates from the manufacturer can improve shifting efficiency. Regular inspections and timely repairs also contribute to sustained 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.
2005-2010 Pontiac G6 Service Manual
Coming SoonComprehensive guide covering maintenance, repair, and troubleshooting for the Pontiac G6, including the 4T45 transmission.
Technical Service Bulletin for 4T45 Transmission
Coming SoonLatest updates and fixes for common issues related to the 4T45 transmission in the Pontiac G6.
Pontiac G6 Parts and Accessories Catalog
Coming SoonDetailed catalog of OEM and aftermarket parts, including transmission components, for the Pontiac G6.
Legal Disclaimer
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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