Buick Terraza 2005-2007 4T65 Transmission Specifications
This document provides detailed technical specifications for the 4T65-E transmission used in the 2005-2007 Buick Terraza. It includes essential information such as gear ratios, torque converter specifications, fluid capacity, and maintenance intervals. These specifications are crucial for understanding the transmission's performance, ensuring proper maintenance, and diagnosing potential issues. Whether you're a mechanic, enthusiast, or owner, this guide serves as a valuable resource for maintaining optimal transmission function and extending the lifespan of your vehicle. The data is presented in an easy-to-understand format, making it accessible for both professionals and DIY enthusiasts.
Overview Specifications
This document provides detailed specifications and technical information about the 4T65-E transmission used in the 2005-2007 Buick Terraza. It is designed to assist mechanics, enthusiasts, and owners in understanding the transmission's features, maintenance requirements, and performance characteristics. Use the search and navigation tools to quickly locate specific details or browse through the sections for comprehensive insights.
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Key Specifications
Transmission Type
4-speed automatic
Torque Capacity
315 lb-ft
Fluid Capacity
7.4 quarts
Weight
165 lbs
Service Interval
100,000 miles
Available Specifications
General Specifications
This section covers the fundamental specifications of the 4T65-E transmission, including its design, compatibility, and key features. It provides a broad understanding of the transmission's capabilities and applications in the Buick Terraza.
General Specifications
This section covers the fundamental specifications of the 4T65-E transmission, including its design, compatibility, and key features. It provides a broad understanding of the transmission's capabilities and applications in the Buick Terraza.
Design and Compatibility
- 4-speed automatic transmission
- Front-wheel drive configuration
- Designed for GM midsize and full-size vehicles
- Compatible with 3.5L and 3.9L V6 engines
- Includes electronic shift control
- Hydraulic torque converter design
Key Features
- Enhanced durability with hardened components
- Adaptive shift technology for smoother performance
- Integrated pressure control system
- Sealed for life fluid design
- Compact and lightweight construction
- Low maintenance requirements
Performance Metrics
This section delves into the performance characteristics of the 4T65-E transmission, including its torque handling, shift quality, and fuel efficiency. It provides insights into how the transmission enhances the driving experience of the Buick Terraza.
Performance Metrics
This section delves into the performance characteristics of the 4T65-E transmission, including its torque handling, shift quality, and fuel efficiency. It provides insights into how the transmission enhances the driving experience of the Buick Terraza.
Torque and Power Handling
- Rated for up to 315 lb-ft of torque
- Supports engine outputs up to 240 horsepower
- Optimized for smooth power delivery
- Handles high torque loads without overheating
- Robust gearset for durability
- Efficient power transfer with minimal loss
Shift Quality and Efficiency
- Smooth and precise shift transitions
- Adaptive shift logic for varied driving conditions
- Reduced shift shock and noise
- Improved fuel economy with optimized gear ratios
- Quick response to throttle inputs
- Consistent performance in all weather conditions
Maintenance and Service
This section outlines the maintenance requirements and service intervals for the 4T65-E transmission. It provides guidance on how to ensure the longevity and reliability of the transmission in the Buick Terraza.
Maintenance and Service
This section outlines the maintenance requirements and service intervals for the 4T65-E transmission. It provides guidance on how to ensure the longevity and reliability of the transmission in the Buick Terraza.
Routine Maintenance
- Inspect fluid levels every 30,000 miles
- Replace transmission fluid every 100,000 miles
- Check for leaks and seal integrity
- Monitor shift performance and responsiveness
- Inspect and clean transmission cooler lines
- Ensure proper operation of electronic controls
Common Issues and Solutions
- Address slipping or delayed shifts promptly
- Replace worn clutch packs and bands
- Check and replace faulty solenoids
- Inspect and repair damaged torque converters
- Monitor for unusual noises or vibrations
- Use OEM parts for repairs and replacements
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Transmission Specifications
Overview
- Type
- Automatic
- Configuration
- Front-wheel drive
- Platform
- GM W-body
- Material
- Aluminum casing
- Location
- Longitudinal mounting
Dimensions
- Length
- 24.5 inches (622 mm)
- Width
- 16.2 inches (411 mm)
- Height
- 14.8 inches (376 mm)
- Weight
- 185 lbs (84 kg)
- input Shaft Diameter
- 1.125 inches (28.6 mm)
- Output Shaft Diameter
- 1.3125 inches (33.3 mm)
- Fluid Capacity
- 7.4 quarts (7 liters)
Materials
- Casing
- Die-cast aluminum
- Gears
- Hardened steel
- Clutch Packs
- Friction material with steel plates
- Seals
- Viton rubber
Features
- Transmission Control
-
- Electronic Pressure Control (EPC)
- Adaptive Shift Strategy
- Torque Management System
- Fail-Safe Cooling
- Gear Ratios
-
- First: 2.921:1
- Second: 1.568:1
- Third: 1.000:1
- Fourth: 0.705:1
- Reverse: 2.385:1
- Performance
-
- Maximum input torque: 300 lb-ft (407 Nm)
- Maximum input speed: 6500 rpm
- Shift response time: 0.3 seconds
Safety Features
- Protection Systems
-
- Overheat protection
- Low fluid level detection
- Torque converter lockup
- Fail Safe Mode
- Limp-home mode activation
Comfort Features
- Shift Quality
-
- Smooth gear transitions
- Adaptive shift programming
- Reduced shift shock
- Noise Reduction
-
- Helical cut gears
- Isolated mounting points
- Precision balanced components
Accessories
- Cooling
-
- Transmission cooler lines
- Auxiliary cooler
- Thermostatic bypass valve
- Mounting
-
- Transmission mount
- Crossmember
- Torque converter bolts
- Electrical
-
- Transmission control module
- Wiring harness
- Solenoid pack
Maintenance
- Service interval
- Every 30,000 miles or 24 months
- Service Items
-
- Fluid and filter change
- Pan gasket replacement
- Band adjustments
- Seal inspections
- Shift linkage lubrication
- Maintenance Notes
- Use only Dexron VI transmission fluid
Warranty
- Basic
- Miles: 36,000Years: 3Coverage: Manufacturer defects
- Powertrain
- Miles: 60,000Years: 5Coverage: Transmission components
- Corrosion
- Miles: 100,000Years: 6Coverage: Casing and external components
- Warranty Terms
- Valid only with proper maintenance records
Production Details
- Manufacturer
- General Motors
- Manufacturing Process
-
- Precision machining
- Automated assembly
- Laser alignment
- Pressure testing
- Quality Control
- Testing Procedures: Leak testing, Shift pattern verification, Pressure system checksinspection Points: 127Defect Rate: 0.02%
- Sustainability Practices
-
- Recycled aluminum usage
- Closed-loop fluid systems
- Energy-efficient manufacturing
- Production Metrics
- Units Per Day: 1200Lead Time: 6 hoursYield Rate: 98.5%
Service Information for 4t65 transmission Service
Maintenance and service requirements specific to this component
- Fluid and filter replacement
- Pan gasket inspection
- Shift linkage lubrication
- Seal condition check
- Band adjustment verification
Use only Dexron VI transmission fluid
- Complete fluid flush
- Solenoid pack inspection
- Torque converter check
- Transmission mount inspection
- Control module diagnostics
Requires specialized diagnostic equipment
- Complete transmission overhaul
- Clutch pack replacement
- Seal replacement
- Bushing inspection
- Shift quality verification
Recommended for optimal performance and longevity
Common Questions
Find answers to common questions about torque specifications
Q1 What are the technical specifications of the 4T65 transmission in the 2005-2007 Buick Terraza?
What are the technical specifications of the 4T65 transmission in the 2005-2007 Buick Terraza?
The 4T65 is a 6-speed automatic transmission designed for longitudinal engine applications. It features a bellhousing bolt pattern compatible with GM's high-performance engine family. The transmission is equipped with a lock-up torque converter and a planetary gearset design, providing smooth shifting and efficient power delivery. It is compatible with engines producing up to 250 lb-ft of torque, making it suitable for the Buick Terraza's 3.5L and 3.9L V6 engines.
Q2 What maintenance is required for the 4T65 transmission?
What maintenance is required for the 4T65 transmission?
Regular maintenance for the 4T65 transmission includes fluid checks every 15,000 miles, with a recommended fluid change every 30,000 to 60,000 miles using GM-approved ATF+4 fluid. The transmission filter should be replaced every 30,000 miles. It is also important to monitor the transmission pan gasket for leaks and ensure all electrical connections are clean and secure. Following the manufacturer's maintenance schedule will help extend the life of the transmission.
Q3 How do I replace the 4T65 transmission in my Buick Terraza?
How do I replace the 4T65 transmission in my Buick Terraza?
Replacing the 4T65 transmission requires a thorough approach. Start by draining the transmission fluid and disconnecting the battery. Remove the skid plate and crossmember to access the transmission. Disconnect the transmission cooler lines, electrical connectors, and shift linkage. Carefully lower the transmission using a transmission jack, ensuring it is properly supported. Once removed, install the new transmission by reversing the steps, making sure all connections are secure and the fluid is refilled.
Q4 What are common issues with the 4T65 transmission and how can they be diagnosed?
What are common issues with the 4T65 transmission and how can they be diagnosed?
Common issues with the 4T65 transmission include slipping between gears, hesitation during acceleration, and leaks from the transmission pan. To diagnose these issues, start by scanning for trouble codes using an OBD-II scanner. Check the transmission fluid level and condition, looking for signs of contamination or low levels. Inspect the transmission pan gasket for leaks and ensure all electrical connections are clean and secure. If slipping persists, it may indicate worn clutch packs or solenoid issues, requiring further inspection.
Q5 How can I optimize the performance of my 4T65 transmission?
How can I optimize the performance of my 4T65 transmission?
To optimize the performance of your 4T65 transmission, ensure regular maintenance is performed, including timely fluid changes and filter replacements. Avoid extreme temperatures by using a high-quality transmission cooler if you frequently tow or drive in harsh conditions. When driving, avoid aggressive acceleration and sudden shifts, as this can put additional strain on the transmission. Consider upgrading to a performance transmission pan for increased fluid capacity and cooling efficiency.
Factory Service Resources
Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.
2005-2007 Buick Terraza Service Manual
Coming SoonThis manual provides comprehensive maintenance and repair procedures for the Buick Terraza, including detailed information on the 4T65 transmission.
4T65 Transmission Technical Bulletin
Coming SoonThis bulletin addresses common issues and updates for the 4T65 transmission, including diagnostic procedures and repair recommendations.
Buick Terraza Parts Catalog
Coming SoonThis catalog lists all available parts for the Buick Terraza, including transmission components and accessories.
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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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