Pontiac Pontiac Grand Prix 2004-2008 4T65 Transmission Specifications
This document provides detailed specifications for the 4T65-E transmission used in the 2004-2008 Pontiac Grand Prix. It includes technical data such as gear ratios, torque capacity, fluid type, and maintenance intervals, essential for understanding the transmission's performance and durability. The information is valuable for mechanics, enthusiasts, and owners looking to maintain, repair, or upgrade their vehicle. Whether you're performing routine maintenance, diagnosing issues, or planning performance enhancements, this guide offers the technical insights needed to ensure optimal operation and longevity of your transmission.
Overview Specifications
This document provides detailed specifications and technical information about the 4T65-E transmission used in the 2004-2008 Pontiac Grand Prix. It is designed to assist technicians, enthusiasts, and owners in understanding the transmission's features, maintenance requirements, and performance characteristics. Use this guide to find precise information about the transmission's design, operation, and specifications.
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Key Specifications
Transmission Type
4-Speed Automatic
Maximum Torque
320 lb-ft
Fluid Capacity
7.4 quarts
Gear Ratios
2.92:1 to 0.70:1
Service Interval
50,000 miles
Available Specifications
Transmission Design
This section covers the design aspects of the 4T65-E transmission, including its construction, components, and layout. Learn about the transmission's architecture and how it integrates with the Pontiac Grand Prix's drivetrain.
Transmission Design
This section covers the design aspects of the 4T65-E transmission, including its construction, components, and layout. Learn about the transmission's architecture and how it integrates with the Pontiac Grand Prix's drivetrain.
General Design
- Four-speed automatic transmission
- Transverse-mounted configuration
- Hydraulic control system
- Electronic pressure control (EPC) solenoid
- Integrated torque converter
- Aluminum alloy casing
Key Components
- Planetary gear sets
- Hydraulic clutch packs
- Input and output shafts
- Valve body assembly
- Transmission control module (TCM)
- Cooling system with integrated cooler
Performance Specifications
This section provides detailed performance specifications for the 4T65-E transmission. Find information about torque capacity, gear ratios, and other critical performance metrics.
Performance Specifications
This section provides detailed performance specifications for the 4T65-E transmission. Find information about torque capacity, gear ratios, and other critical performance metrics.
Gear Ratios
- 1st Gear: 2.92:1
- 2nd Gear: 1.57:1
- 3rd Gear: 1.00:1
- 4th Gear: 0.70:1
- Reverse Gear: 2.38:1
Torque Capacity
- Maximum torque capacity: 320 lb-ft
- Designed for V6 engines
- Optimized for smooth shifting
- Enhanced durability for performance driving
Maintenance and Service
This section outlines the maintenance requirements and service intervals for the 4T65-E transmission. Learn about fluid changes, filter replacements, and common troubleshooting tips.
Maintenance and Service
This section outlines the maintenance requirements and service intervals for the 4T65-E transmission. Learn about fluid changes, filter replacements, and common troubleshooting tips.
Fluid Specifications
- Recommended fluid: Dexron VI ATF
- Fluid capacity: 7.4 quarts (with torque converter)
- Fluid change interval: 50,000 miles
- Use of synthetic fluid recommended
Common Issues
- Solenoid wear and failure
- Valve body issues
- Torque converter clutch problems
- Transmission fluid leaks
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Transmission Specifications
Overview
- Type
- Automatic
- Configuration
- Front-wheel drive
- Platform
- GM W-body
- Material
- Aluminum casing
- Location
- Front of vehicle
Dimensions
- Length
- 25.5 in (647.7 mm)
- Width
- 18.7 in (475 mm)
- Height
- 15.3 in (388.6 mm)
- Weight
- 180 lbs (81.6 kg)
- input Shaft Diameter
- 1.25 in (31.75 mm)
- Output Shaft Diameter
- 1.38 in (35 mm)
- Fluid Capacity
- 7.4 quarts (7 liters)
Materials
- Casing
- Aluminum alloy
- Gears
- Hardened steel
- Clutches
- Friction material with steel backing
- Seals
- Viton rubber
- Bearings
- High-carbon steel
Features
- Performance
-
- Electronic shift control
- Adaptive shift programming
- Torque converter lockup
- Performance shift mode
- Efficiency
-
- Optimized gear ratios
- Reduced parasitic losses
- Efficient fluid circulation
- Low-friction components
- Durability
-
- Reinforced internal components
- High-strength materials
- Robust cooling system
- Extended service intervals
- Control
-
- PCM-controlled shifting
- Manual shift capability
- Grade braking
- Shift stabilization
- Safety
-
- Neutral safety switch
- Reverse lockout
- Fail-safe mode
- Overheat protection
Safety Features
- Protection
-
- Overheat protection
- Fail-safe mode
- Reverse lockout
- Monitoring
-
- Fluid level sensor
- Temperature sensor
- Shift position sensor
- Controls
-
- Neutral safety switch
- Brake-transmission shift interlock
- Shift stabilization
Comfort Features
- Shift Quality
-
- Smooth shifting
- Adaptive shift programming
- Reduced shift shock
- Noise Reduction
-
- Quiet operation
- Vibration dampening
- Sound insulation
- Convenience
-
- Automatic shifting
- Manual shift capability
- Grade braking
Accessories
- Performance
-
- Shift kit
- High-stall torque converter
- Performance transmission cooler
- Maintenance
-
- Transmission fluid
- Filter kit
- Gasket set
- Diagnostic
-
- Scan tool
- Pressure gauge
- Temperature gauge
Maintenance
- Service interval
- Every 30,000 miles or 24 months
- Service Items
-
- Fluid and filter change
- Inspect for leaks
- Check fluid level
- Inspect mounts and linkages
- Check for error codes
- Maintenance Notes
- Use Dexron VI transmission fluid, ensure proper fluid level and condition, inspect for unusual noises or shifting issues.
Warranty
- Basic
- Miles: 36,000Years: 3Coverage: Parts and labor
- Powertrain
- Miles: 60,000Years: 5Coverage: Major components
- Corrosion
- Miles: 100,000Years: 6Coverage: Perforation from corrosion
- Emissions
- Miles: 24,000Years: 2Coverage: Emissions-related components
Production Details
- Manufacturer
- General Motors
- Manufacturing Process
-
- Casting of aluminum casing
- Machining of internal components
- Heat treatment of gears
- Assembly and testing
- Quality Control
- inspection: 100% inspection of critical componentsTesting: Durability and performance testingCertification: ISO 9001 certified
- Sustainability Practices
-
- Recycling of materials
- Energy-efficient manufacturing
- Reduction of waste
- Production Metrics
- Units Per Year: 500,000Defect Rate: Less than 0.5%Production Time: 3 hours per unit
Service Information for 4t65 transmission Service
Maintenance and service requirements specific to this component
- Change transmission fluid
- Replace transmission filter
- Inspect for leaks
- Check fluid level
- Inspect mounts and linkages
Use Dexron VI transmission fluid, ensure proper fluid level and condition.
- Change transmission fluid
- Replace transmission filter
- Inspect for leaks
- Check fluid level
- Inspect mounts and linkages
- Check for error codes
Use Dexron VI transmission fluid, ensure proper fluid level and condition.
- Change transmission fluid
- Replace transmission filter
- Inspect for leaks
- Check fluid level
- Inspect mounts and linkages
- Check for error codes
- Perform transmission service
Use Dexron VI transmission fluid, ensure proper fluid level and condition.
Common Questions
Find answers to common questions about torque specifications
Q1 Is the 4T65-E transmission compatible with other GM models besides the 2004-2008 Pontiac Grand Prix?
Is the 4T65-E transmission compatible with other GM models besides the 2004-2008 Pontiac Grand Prix?
The 4T65-E transmission is compatible with several GM models, including the Buick Regal, Chevrolet Impala, and Oldsmobile Intrigue, among others. It was widely used in front-wheel-drive vehicles with V6 engines. However, compatibility depends on factors like engine type, drivetrain configuration, and model year. Always verify specific fitment details before installation.
Q2 What are the maintenance requirements for the 4T65-E transmission in the 2004-2008 Pontiac Grand Prix?
What are the maintenance requirements for the 4T65-E transmission in the 2004-2008 Pontiac Grand Prix?
The 4T65-E transmission requires regular maintenance to ensure longevity. This includes fluid and filter changes every 30,000 to 50,000 miles, depending on driving conditions. Inspect for leaks, worn seals, and damaged components. Use only Dexron VI automatic transmission fluid. Additionally, monitor for symptoms like slipping, delayed shifts, or unusual noises, which may indicate internal issues.
Q3 How do I replace the 4T65-E transmission in a 2004-2008 Pontiac Grand Prix?
How do I replace the 4T65-E transmission in a 2004-2008 Pontiac Grand Prix?
Replacing the 4T65-E transmission involves several steps: disconnect the battery, drain the transmission fluid, remove the drive axles, and detach the transmission cooler lines. Unbolt the transmission from the engine and lower it using a transmission jack. Install the new transmission by reversing the process, ensuring proper torque specs and alignment. Refill with Dexron VI fluid and test for leaks.
Q4 What are common troubleshooting steps for 4T65-E transmission issues?
What are common troubleshooting steps for 4T65-E transmission issues?
Common issues include slipping gears, delayed shifts, and overheating. Start by checking the transmission fluid level and condition. Inspect for leaks or damaged components. Use a scan tool to read diagnostic trouble codes (DTCs). Address issues like worn clutches, faulty solenoids, or a defective torque converter. Regular maintenance and timely repairs can prevent major failures.
Q5 How can I optimize the performance of the 4T65-E transmission?
How can I optimize the performance of the 4T65-E transmission?
To optimize performance, use high-quality Dexron VI fluid and ensure proper fluid levels. Install an auxiliary transmission cooler to reduce heat buildup. Consider upgrading to a heavy-duty torque converter or performance shift kit for improved durability and responsiveness. Regularly inspect and maintain the transmission to prevent wear and tear.
Factory Service Resources
Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.
4T65-E Transmission Service Manual
Coming SoonComprehensive guide covering installation, maintenance, and troubleshooting for the 4T65-E transmission.
GM Technical Service Bulletin for 4T65-E
Coming SoonOfficial bulletin addressing common issues, updates, and fixes for the 4T65-E transmission.
4T65-E Parts and Accessories Catalog
Coming SoonDetailed catalog of OEM and aftermarket parts for the 4T65-E transmission, including seals, gaskets, and performance upgrades.
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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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