This guide provides comprehensive details on the Infiniti G35 transmission system‚ covering maintenance‚ troubleshooting‚ and repair procedures for both manual and automatic transmissions․
1․1 Overview of the G35 Transmission System
The Infiniti G35 features a robust transmission system‚ available in both manual and automatic configurations․ The 6-speed manual transmission is renowned for its smooth shifting and performance-oriented design‚ while the 5-speed automatic offers seamless gear transitions․ Both systems are designed to work seamlessly with the VQ35DE engine‚ providing optimal power delivery and fuel efficiency․ The transmission system is compatible with various model years (2003-2008) and body styles‚ including sedans and coupes․ Regular maintenance‚ such as fluid checks and filter replacements‚ ensures longevity and optimal performance․
1․2 Importance of the Transmission Manual
The G35 transmission manual is an essential resource for understanding‚ maintaining‚ and repairing the transmission system․ It provides detailed instructions for DIY repairs‚ troubleshooting common issues‚ and performing routine maintenance․ The manual ensures owners can identify potential problems early‚ preventing costly damages․ By following the guidelines‚ users can optimize transmission performance‚ enhance longevity‚ and maintain the vehicle’s overall health․ Whether for a novice or experienced mechanic‚ the manual is a vital tool for keeping the G35 running smoothly․
History and Development of the G35 Transmission
The G35 transmission was developed for the 2003-2008 model years‚ offering both manual and automatic options․ The 6-speed manual became popular for its smooth shifting and performance capabilities․
2․1 Evolution of the G35 Transmission (2003-2008)
The G35 transmission underwent significant development between 2003 and 2008‚ with improvements focused on performance and reliability․ The 6-speed manual transmission became a standout feature‚ known for smooth shifting and responsiveness․ By 2005‚ updates included refined synchronizers and bearings for better durability․ The 2006 models introduced enhanced gear ratios‚ improving acceleration and drivability․ By 2008‚ the transmission had reached its peak‚ offering a balance of performance and reliability‚ solidifying its reputation as a robust powertrain component for both sedan and coupe models․
2․2 Key Improvements in Manual Transmission Models
Manual transmission models of the G35 saw notable enhancements‚ including upgraded synchronizers for smoother shifting and reduced wear․ The gearbox received stronger bearings and revised gear ratios for improved acceleration and fuel efficiency․ Additionally‚ the clutch system was refined for better engagement and reduced driver fatigue․ These updates‚ particularly in later models‚ addressed common issues like grinding gears and soft synchronizers‚ making the manual transmission more durable and driver-friendly‚ especially in high-performance driving scenarios․
Types of G35 Transmissions
The G35 features two primary transmission types: a 6-speed manual and a 5-speed automatic․ Each offers unique benefits‚ with the manual providing driver control and the automatic offering seamless convenience․
3․1 Manual Transmission (6-Speed)
The G35’s 6-speed manual transmission is a popular choice for driving enthusiasts‚ offering precise control and smooth shifting․ Available in models from 2003 to 2008‚ it pairs well with the VQ35DE engine‚ delivering enhanced acceleration and driver engagement․ The manual transmission is particularly praised for its responsive gear changes and direct connection to the vehicle’s performance․ Later models‚ such as the 2005-2006 versions‚ introduced improvements like the CD009 transmission‚ addressing earlier issues with soft synchronizers and grinding gears‚ thus enhancing overall reliability and driving satisfaction․
3․2 Automatic Transmission (5-Speed)
The G35’s 5-speed automatic transmission provides smooth and seamless gear transitions‚ ideal for comfortable city driving and highway cruising․ This transmission‚ available across various model years‚ features adaptive shift logic that adjusts to driving conditions‚ optimizing fuel efficiency and performance․ The automatic option is preferred by many for its ease of use and suitability for daily driving․ It also includes a manual shift mode‚ offering drivers the flexibility to override automatic shifting when desired‚ ensuring a balance between convenience and control behind the wheel․
Maintenance and Care for the G35 Transmission
Regular transmission fluid checks and filter replacements are essential․ Be aware of common maintenance issues and address them promptly to ensure optimal performance and longevity․
4․1 Transmission Fluid Check and Replacement
Regularly checking the transmission fluid level is crucial for maintaining the G35’s performance․ Start the engine‚ let it warm up‚ and locate the transmission dipstick (usually labeled ATF)․ Ensure the fluid level is within the recommended range and top it off if necessary․ Use the specified fluid type to avoid damage․ Replacement intervals vary‚ but replacing the fluid every 30‚000 to 60‚000 miles is advised․ Always consult the manual for precise instructions and fluid specifications․
4․2 Common Maintenance Issues
Common issues with the G35 transmission include low fluid levels‚ dirty fluid‚ and worn-out filters․ Neglecting fluid changes can lead to slipping gears and overheating‚ while worn synchronizers may cause grinding shifts․ Regular filter replacements and fluid flushes help prevent these problems․ Additionally‚ clutch wear in manual models can lead to slippage and difficulty shifting․ Addressing these issues early ensures smooth operation and extends the transmission’s lifespan․ Always follow the recommended maintenance schedule for optimal performance․
Troubleshooting the G35 Transmission
This section covers identifying and diagnosing common transmission issues‚ such as slipping gears‚ grinding noises‚ and fluid leaks․ It provides steps to troubleshoot and resolve problems effectively․
5․1 Common Symptoms of Transmission Problems
Identifying transmission issues early is crucial for preventing major damage․ Common symptoms include slipping gears‚ grinding noises‚ and delayed engagement․ Drivers may also notice fluid leaks‚ unusual odors‚ or erratic shifting patterns․ Additionally‚ loss of power during acceleration or dashboard warning lights can indicate transmission-related problems․ These signs often point to issues like worn components‚ low fluid levels‚ or electronic control malfunctions․ Addressing these symptoms promptly ensures optimal performance and longevity of the G35 transmission system․ Regular inspections and fluid checks are essential for early detection․ Always consult a professional for accurate diagnosis and repair․
5․2 DIY Troubleshooting Steps
Start by checking the transmission fluid level and condition‚ ensuring it’s clean and at the recommended level․ Inspect for leaks around the pan and connections․ Listen for unusual noises during shifting or operation․ Feel for vibrations or hesitation when accelerating․ Use an OBD-II scanner to check for error codes if the dashboard warning light illuminates․ Consult the repair manual for specific troubleshooting guides tailored to your G35 model․ Addressing issues early can prevent costly repairs and ensure smooth transmission performance․ Always follow safety precautions when working under the hood or with transmission components․
Repair and Rebuild Guide
This guide provides tools and materials for G35 transmission repair and rebuild‚ covering disassembly‚ inspection‚ and reassembly․ Follow manual instructions for torque specs and troubleshooting․
6;1 Tools and Materials Needed for Transmission Repair
Essential tools include a socket set‚ torque wrench‚ and seal puller․ Materials needed are gaskets‚ seals‚ and transmission fluid․ A repair manual is crucial for guidance․ Ensure all parts are compatible with your G35 model year․ Use high-quality components to avoid future issues․ Proper tools and materials are vital for a successful transmission repair or rebuild․ Consult the manual for specific torque specifications and procedures to ensure accuracy and safety during the process․
6․2 Step-by-Step Rebuild Process
Begin by disassembling the transmission‚ carefully documenting each component․ Inspect and replace worn parts like bearings‚ seals‚ and synchronizers․ Reassemble in the reverse order‚ ensuring proper alignment and torque specifications․ Use a repair manual for precise guidance․ Replace the transmission fluid and filter before reinstalling․ Test the transmission by checking gear shifts and fluid levels․ Ensure all connections are secure and leak-free․ Follow proper safety protocols and consult a professional if unsure․
Upgrading the G35 Transmission
Enhance performance with aftermarket parts like high-performance clutches‚ lightweight flywheels‚ and upgraded gear sets․ These mods improve acceleration and durability for both street and track use․
7․1 Performance Upgrades for Manual Transmission
Enhance your G35’s driving dynamics with performance upgrades like lightweight flywheels and high-performance clutches for smoother‚ faster shifting․ Install a short-throw shifter to reduce shift times and improve precision․ Aftermarket gear sets can optimize acceleration and torque delivery‚ while upgraded differential components ensure better traction․ These mods are ideal for racing or spirited driving‚ offering improved responsiveness and durability without compromising daily drivability․
7․2 Aftermarket Parts and Accessories
The G35 manual transmission can be further enhanced with aftermarket parts such as high-strength axles‚ performance clutch kits‚ and lightweight flywheels․ These components improve durability and responsiveness during high-performance driving․ Additionally‚ aftermarket shifter kits and transmission mounts are available to refine shifting precision and reduce drivetrain vibrations․ Online retailers like eBay and specialized automotive stores offer a wide range of these upgrades‚ ensuring compatibility and enhancing the overall driving experience for enthusiasts seeking optimal transmission performance․
Model-Specific Transmission Details
The G35 transmission varies by model year‚ with distinct features in 2003-2005 and 2006-2008 versions‚ ensuring compatibility and performance tailored to each specific vehicle configuration․
8․1 2003-2005 G35 Transmission Features
The 2003-2005 Infiniti G35 features a 6-speed manual transmission‚ paired with the VQ35DE 3․5L V6 engine․ This setup delivers smooth shifting and robust performance․ The rear-wheel-drive layout enhances handling‚ while the transmission’s synchronized gears ensure precise control․ Early models include a clutch system designed for durability․ Maintenance involves regular transmission fluid checks and filter replacements․ These models laid the foundation for later improvements‚ offering a reliable and engaging driving experience for enthusiasts and daily drivers alike․
8․2 2006-2008 G35 Transmission Features
The 2006-2008 Infiniti G35 features the CD009 6-speed manual transmission‚ introduced in 2006‚ offering improved strength and reliability․ This transmission‚ used in both Coupe and Sedan models‚ includes enhanced synchronizers for smoother shifting․ Paired with the VQ35DE 3․5L V6 engine‚ it delivers 298 hp in manual models․ Rear-wheel-drive remains standard‚ with optional all-wheel-drive in later years․ Maintenance involves regular transmission fluid checks and filter replacements to ensure optimal performance․ These models refined the G35’s drivetrain‚ balancing power and reliability for a sporty yet refined driving experience․
Transmission Fluid and Filter
Regular transmission fluid checks ensure optimal performance․ Use the dipstick to monitor levels after warming the engine․ Replace the filter every 30‚000 miles for consistent operation․
9․1 Recommended Transmission Fluid Types
For the Infiniti G35‚ use Nissan Matic fluid or equivalent․ This ensures optimal performance and longevity․ Avoid using incorrect fluids‚ as they can damage seals and gears‚ leading to costly repairs․ Always refer to your owner’s manual for specific recommendations‚ as improper fluid can void warranties or cause transmission failure․ Regular fluid checks and changes are crucial for maintaining smooth operation and preventing premature wear․ Using high-quality‚ compatible fluid is essential for the health of your G35’s transmission system․
9․2 Transmission Filter Replacement Guide
Replace the transmission filter every 30‚000 to 60‚000 miles to ensure optimal performance․ Locate the filter near the transmission pan․ Use a socket to remove the bolts‚ then carefully lower the pan․ Drain the fluid and remove the old filter․ Install the new filter‚ ensuring it’s securely seated․ Reattach the pan‚ refill with recommended fluid‚ and check for leaks․ Regular filter replacement prevents contaminants from damaging the transmission‚ ensuring smooth operation and extending its lifespan․
Clutch and Drivetrain
The clutch and drivetrain are critical components‚ requiring regular inspection․ Replace the clutch every 50‚000 to 80‚000 miles‚ depending on usage․ Ensure proper alignment during installation to prevent wear․
10․1 Clutch Maintenance and Replacement
Regular inspection of the clutch system is essential to ensure smooth operation․ Replace the clutch every 50‚000 to 80‚000 miles‚ depending on usage․ Symptoms of a failing clutch include slipping or difficulty shifting gears․ During replacement‚ ensure proper alignment to prevent uneven wear․ Use a hydraulic press for safe removal and installation․ Always replace the clutch disc‚ pressure plate‚ and bearing together for optimal performance․ Consult a professional if inexperienced to avoid further damage․
10․2 Drivetrain Components and Care
The drivetrain in your Infiniti G35 includes the differential‚ driveshaft‚ and CV axles‚ working together to transfer power from the transmission to the wheels․ Regular inspection of these components is crucial to prevent wear․ Lubricate the CV joints annually and replace them if worn․ Inspect the driveshaft for balance and damage․ Check the differential fluid level and top it off as needed․ Proper maintenance ensures smooth power delivery and prevents costly repairs․ Always refer to your G35 transmission manual for specific guidelines and recommendations․
Transmission Control Systems
The Electronic Control Unit (ECU) manages the G35’s transmission‚ monitoring sensors to optimize shifting and performance․ Regular software updates ensure proper functionality and diagnostic capabilities for smooth operation․
11․1 Electronic Control Units (ECU)
The Electronic Control Unit (ECU) in the G35 transmission system plays a crucial role in managing transmission operations․ It monitors key parameters such as speed‚ throttle position‚ and engine load to optimize gear shifting; The ECU also handles diagnostic functions‚ storing error codes for easy troubleshooting․ Regular software updates are essential to maintain optimal performance and ensure compatibility with other vehicle systems․ This advanced technology enhances driving efficiency and responsiveness‚ making it a vital component of the G35’s transmission control systems․
11․2 Solving Electronic Transmission Issues
Diagnosing and resolving electronic transmission issues in the G35 often involves checking the ECU for fault codes using an OBD-II scanner․ Software updates may be necessary to address bugs or improve functionality․ Faulty solenoids or wiring can disrupt electronic signals‚ requiring replacement or repair․ Corrosion in connectors should be cleaned to ensure proper communication․ If issues persist‚ consulting a professional technician with specialized tools is recommended to avoid further damage․ Regular maintenance and updates help prevent electronic malfunctions‚ ensuring smooth transmission operation․
G35 Transmission in Racing and Performance
The G35’s manual transmission excels in racing due to its durability and smooth shifting‚ making it a popular choice for high-performance applications and upgrades like the CD009 transmission․
12․1 Racing Applications of the G35 Manual Transmission
The G35’s 6-speed manual transmission is widely used in racing for its strength and precision shifting․ Its durability and ability to handle high torque make it ideal for competitive environments․ Many racers opt for the CD009 variant due to its enhanced synchronizers and gear ratios‚ which are designed to minimize wear during intense driving․ Additionally‚ aftermarket modifications further optimize its performance‚ ensuring consistent and reliable operation under race conditions; This transmission’s adaptability has solidified its reputation as a favorite among racing enthusiasts․
12․2 Performance Mods for Enhanced Transmission Efficiency
Optimizing the G35 manual transmission for racing involves specific mods to enhance efficiency․ Upgraded synchronizer rings improve shifting precision‚ reducing wear during high-speed maneuvers․ Lightweight flywheels decrease rotational mass‚ allowing quicker acceleration․ High-performance clutch kits provide better grip and durability under intense conditions․ Additionally‚ aftermarket gear sets with optimized ratios can improve power delivery‚ while transmission coolers maintain consistent operating temperatures․ These modifications collectively enhance the transmission’s reliability and performance‚ making it suitable for competitive racing environments․
Warranty and Repair Services
The G35 transmission is covered under a factory warranty‚ offering protection for parts and labor․ Professional repair services provide expert diagnostics and replacements‚ ensuring optimal performance and longevity․
13․1 Factory Warranty Coverage for Transmissions
The factory warranty for the G35 transmission typically covers parts and labor for defects for up to 5 years or 60‚000 miles․ It includes repairs for transmission components like the gearbox and torque converter․ Coverage extends to automatic and manual transmissions‚ ensuring reliability․ Extended warranties may be available for additional protection․ This coverage provides peace of mind for owners‚ addressing issues without extra costs․ Always consult the official manual for specific terms and conditions․
13․2 Professional Repair Services
Professional repair services for the G35 transmission are available through authorized dealerships and specialized transmission shops․ These services include diagnostic checks‚ fluid replacements‚ and component repairs or replacements․ Certified technicians use OEM parts and remanufactured transmissions to ensure reliability․ Many providers offer warranties on their work‚ providing peace of mind․ Online marketplaces also offer rebuilt transmissions with flat-rate shipping and extended warranty options․ Always opt for reputable services to maintain your G35’s performance and longevity․
Owner Feedback and Reviews
Owners praise the G35 manual transmission for its smooth operation and durability‚ with many appreciating its responsiveness․ DIY enthusiasts find the repair manual detailed and helpful for maintenance․
14․1 Customer Experiences with the G35 Manual Transmission
Customers report mixed experiences with the G35 manual transmission․ Many praise its smooth shifting and responsiveness‚ enhancing the driving experience․ However‚ some owners have noted issues with reliability over time‚ such as grinding gears and worn synchronizers․ Regular maintenance and proper care are emphasized to prevent these problems․ A remanufactured transmission has been a popular solution for addressing common issues․ Overall‚ the G35 manual transmission remains a favorite among enthusiasts for its performance and durability when properly maintained․
14․2 Common Praise and Complaints
The G35 manual transmission is often praised for its smooth shifting and responsive performance‚ making it a favorite among driving enthusiasts․ However‚ some owners have reported issues with gear grinding and worn synchronizers over time‚ particularly in higher-mileage vehicles․ Regular maintenance and proper care are crucial to extending the transmission’s lifespan․ While the manual transmission is celebrated for its durability‚ occasional complaints about reliability highlight the importance of proactive upkeep to ensure optimal performance and longevity․
G35 Transmission Manual Resources
Official repair manuals‚ online forums‚ and specialized automotive websites offer detailed guides and troubleshooting tips for the G35 transmission‚ ensuring comprehensive support for owners and technicians․
15․1 Official Repair Manuals
Official Infiniti G35 repair manuals provide detailed instructions for transmission maintenance and repair․ The Haynes Repair Manual for 2003-2008 models includes over 700 photos and step-by-step guides․ It covers engine‚ transmission‚ and drivetrain specifics‚ making it essential for DIY enthusiasts․ Additionally‚ the 2006 G35 Workshop Manual offers comprehensive technical details‚ spanning 3‚508 pages․ These resources ensure accurate repairs and are invaluable for both amateur mechanics and professionals‚ offering clear‚ factory-authorized procedures and specifications․
15․2 Online Forums and Communities
Online forums and communities are invaluable resources for G35 transmission discussions․ Platforms like eBay‚ specialized car forums‚ and social media groups offer extensive support․ DIY enthusiasts share repair tips‚ while experienced mechanics provide expert advice․ These communities foster collaboration‚ helping users troubleshoot issues and find rare parts․ They also host detailed guides and real-world experiences‚ making them indispensable for both novice and advanced technicians seeking to optimize their G35 transmission performance and longevity․