Cadillac CT6 2016-2020 8L90 Transmission Specifications
This document provides a detailed overview of the 8L90 transmission specifications for the 2016-2020 Cadillac CT6. It includes critical technical details such as gear ratios, torque capacity, shift points, and fluid requirements. The 8L90, an 8-speed automatic transmission, is renowned for its smooth performance, fuel efficiency, and durability. Designed to handle high torque outputs, it complements the CT6's powerful engines, ensuring optimal performance and driving dynamics. This resource is invaluable for owners, technicians, and enthusiasts seeking to understand the transmission's capabilities, maintenance needs, and compatibility. Whether for routine servicing, performance upgrades, or troubleshooting, this guide offers essential insights to maximize the longevity and efficiency of the 8L90 transmission.
Overview Specifications
This document provides detailed specifications and technical information about the 8L90 transmission used in the 2016-2020 Cadillac CT6. It includes sections on design, performance, maintenance, and key features. Use this guide to understand the transmission's capabilities, how it operates, and how to maintain it for optimal performance. Whether you're a technician, engineer, or enthusiast, this resource will help you navigate the intricacies of the 8L90 transmission.
How to Use
Use the search functionality to quickly locate specific terms or phrases within the document. Enter keywords related to the 8L90 transmission, such as 'torque capacity' or 'gear ratios,' and the search will highlight relevant sections.
Navigate through the document by scrolling through the sections or using the table of contents. Each section is clearly labeled and organized into subsections for easy access to specific details about the 8L90 transmission.
Key Specifications
Transmission Type
8-speed automatic
Torque Capacity
738 lb-ft
Gear Ratios
4.56:1 to 0.65:1
Weight
230 lbs
Fluid Capacity
11.2 quarts
Available Specifications
Design and Construction
The 8L90 transmission is an 8-speed automatic transmission designed for high-performance vehicles like the Cadillac CT6. This section covers its construction, materials, and engineering innovations that contribute to its durability and efficiency.
Design and Construction
The 8L90 transmission is an 8-speed automatic transmission designed for high-performance vehicles like the Cadillac CT6. This section covers its construction, materials, and engineering innovations that contribute to its durability and efficiency.
Material and Build Quality
- Constructed with lightweight aluminum for reduced weight
- High-strength steel components for enhanced durability
- Precision-machined gears for smooth operation
- Advanced thermal management system to prevent overheating
Engineering Innovations
- Compact design for better packaging in the vehicle
- Optimized gear ratios for improved performance
- Electronically controlled clutch system for precise shifts
- Integrated torque converter for efficient power transfer
Performance and Capabilities
This section highlights the performance metrics and capabilities of the 8L90 transmission, including its torque handling, shift speeds, and fuel efficiency enhancements.
Performance and Capabilities
This section highlights the performance metrics and capabilities of the 8L90 transmission, including its torque handling, shift speeds, and fuel efficiency enhancements.
Torque Handling and Power Delivery
- Capable of handling up to 738 lb-ft of torque
- Smooth power delivery across all gear ranges
- Quick and precise shifts for improved acceleration
- Enhanced performance in both low and high-speed scenarios
Fuel Efficiency and Emissions
- Optimized gear ratios for better fuel economy
- Reduced internal friction for improved efficiency
- Compliant with stringent emissions standards
- Adaptive shift strategies for eco-friendly driving
Maintenance and Service
Proper maintenance is essential for the longevity and performance of the 8L90 transmission. This section provides guidelines for routine checks, fluid changes, and troubleshooting common issues.
Maintenance and Service
Proper maintenance is essential for the longevity and performance of the 8L90 transmission. This section provides guidelines for routine checks, fluid changes, and troubleshooting common issues.
Routine Maintenance
- Regular fluid checks and changes every 50,000 miles
- Inspection of seals and gaskets for leaks
- Monitoring of transmission temperatures
- Verification of shift quality and responsiveness
Troubleshooting Common Issues
- Addressing delayed or rough shifts
- Diagnosing unusual noises or vibrations
- Checking for error codes using diagnostic tools
- Ensuring proper calibration of electronic controls
Search Specifications
Search by specification name, value, or description
Type to search through torque specifications. Results will appear below as you type.
Transmission Specifications
Overview
- Type
- Automatic
- Configuration
- 8-speed
- Platform
- Rear-wheel drive/All-wheel drive
- Material
- Aluminum casing
- Location
- Front longitudinal
Dimensions
- Length
- 23.5 in (597 mm)
- Width
- 17.7 in (450 mm)
- Height
- 14.2 in (360 mm)
- Weight
- 214 lbs (97 kg)
- input Shaft Length
- 12.6 in (320 mm)
- Output Shaft Length
- 14.9 in (379 mm)
- Fluid Capacity
- 11.2 quarts (10.6 liters)
Materials
- Casing
- Aluminum alloy
- Gears
- High-strength steel
- Clutches
- Carbon fiber composite
- Shafts
- Hardened steel
Features
- Performance
-
- Quick-shift technology
- Adaptive shift control
- Sport mode
- Manual shift mode
- Efficiency
-
- Active fuel management
- Low friction components
- Optimized gear ratios
- Start-stop technology
- Durability
-
- Enhanced cooling system
- Robust gear design
- High-temperature resistance
- Sealed components
- Technology
-
- Electronic precision shift
- Integrated control module
- Real-time diagnostics
- Adaptive learning
Safety Features
- Protection
-
- Overheat protection
- Overload protection
- Fluid level monitoring
- Control
-
- Electronic stability integration
- Hill start assist
- Trailer sway control
Comfort Features
- Smoothness
-
- Seamless gear shifts
- Low noise operation
- Vibration dampening
- Convenience
-
- Paddle shifters
- Auto park feature
- Remote start compatibility
Accessories
- Upgrades
-
- Performance shift kit
- Enhanced cooling package
- Custom gear ratios
- Tools
-
- Transmission jack
- Fluid exchange system
- Diagnostic scanner
- Maintenance
-
- Transmission fluid
- Filter kit
- Gasket set
Maintenance
- Service interval
- Every 45,000 miles or 48 months
- Service Items
-
- Fluid and filter replacement
- Pan gasket inspection
- Shift linkage adjustment
- Control module update
- Cooling system check
- 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: Perforation only
- Emissions
- Miles: 80,000Years: 8Coverage: Emission control components
Production Details
- Manufacturer
- General Motors
- Manufacturing Process
-
- Precision machining
- Heat treatment
- Assembly line integration
- Quality testing
- Quality Control
- Standards: ISO 9001Testing: Durability testing, Performance validation, Environmental simulation
- Sustainability
-
- Recycled materials
- Energy-efficient manufacturing
- Waste reduction programs
- Production Metrics
- Units Per Year: 150,000Defect Rate: 0.05%Lead Time: 6 weeks
Service Information for 8l90 transmission Service
Maintenance and service requirements specific to this component
- Fluid level check
- Shift quality inspection
- Cooling system inspection
- Control module diagnostics
Ensure all connections are secure
- Fluid and filter replacement
- Pan gasket inspection
- Shift linkage adjustment
- Control module update
Use only Dexron VI transmission fluid
- Complete fluid flush
- Clutch pack inspection
- Valve body overhaul
- Performance testing
Requires specialized equipment and training
Common Questions
Find answers to common questions about torque specifications
Q1 What are the technical specifications of the 8L90 transmission in the 2016-2020 Cadillac CT6?
What are the technical specifications of the 8L90 transmission in the 2016-2020 Cadillac CT6?
The 8L90 transmission is an 8-speed automatic transmission designed for rear-wheel-drive applications. It features a torque capacity of up to 405 lb-ft and is compatible with Cadillac's 3.6L V6 and 3.0L twin-turbo V6 engines. The transmission weighs approximately 214 pounds and includes features like manual mode, paddle-shift controls, and adaptive shift logic for optimized performance and fuel efficiency.
Q2 What are the recommended maintenance requirements for the 8L90 transmission?
What are the recommended maintenance requirements for the 8L90 transmission?
Regular maintenance is essential for the longevity of the 8L90 transmission. Recommended maintenance includes synthetic transmission fluid changes every 30,000 to 60,000 miles, depending on driving conditions. Additionally, the transmission filter should be replaced every 30,000 miles, and the pan gasket should be inspected for leaks. It is also important to monitor fluid levels and ensure proper cooling system function to prevent overheating.
Q3 How do I install or replace the 8L90 transmission in my Cadillac CT6?
How do I install or replace the 8L90 transmission in my Cadillac CT6?
Replacing the 8L90 transmission requires specialized tools and mechanical expertise. Begin by draining the transmission fluid and disconnecting the negative battery terminal. Remove the driveshaft, transmission cooler lines, and electrical connectors. Carefully lift the transmission and remove it from the vehicle. Install the new transmission by reversing the process, ensuring all connections are secure and fluid levels are correct. Always refer to the official Cadillac service manual for precise instructions.
Q4 What are common issues with the 8L90 transmission and how can I troubleshoot them?
What are common issues with the 8L90 transmission and how can I troubleshoot them?
Common issues with the 8L90 transmission include slipping, erratic shifting, or the transmission not engaging properly. To troubleshoot, check the transmission fluid level and condition, as low or degraded fluid can cause performance issues. Use an OBD-II scanner to check for error codes, which can indicate specific problems like faulty solenoids or sensors. Inspect the transmission pan for signs of leaks and ensure the cooling system is functioning correctly. If issues persist, professional diagnosis is recommended.
Q5 How can I optimize the performance of the 8L90 transmission in my Cadillac CT6?
How can I optimize the performance of the 8L90 transmission in my Cadillac CT6?
To optimize the performance of the 8L90 transmission, ensure regular maintenance is performed as specified in the owner's manual. Use high-quality synthetic transmission fluid to maintain optimal lubrication and cooling. Avoid aggressive driving habits, such as rapid acceleration or extreme temperatures, which can stress the transmission. Consider upgrading to a high-performance transmission pan or cooler for improved heat management. Additionally, avoid towing heavy loads beyond the vehicle's recommended capacity to prevent premature wear.
Factory Service Resources
Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.
Cadillac CT6 8L90 Transmission Service Manual
Coming SoonComprehensive guide covering technical specifications, maintenance procedures, and diagnostic steps for the 8L90 transmission in the Cadillac CT6.
Cadillac Technical Bulletin: 8L90 Transmission Updates
Coming SoonOfficial technical bulletin detailing software updates, service procedures, and known fixes for the 8L90 transmission.
Cadillac CT6 Transmission Parts Catalog
Coming SoonCatalog of genuine and aftermarket parts for the 8L90 transmission, including filters, gaskets, and solenoids.
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
Warranty & Liability
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.
Intellectual Property
About the Author
Expert automotive knowledge and experience
'/%3E%3Cpath d='M60 30a20 20 0 1 1 0 40 20 20 0 0 1 0-40zm0 45c16.5 0 30 7.5 30 16.8V100H30v-8.2c0-9.3 13.5-16.8 30-16.8z' fill='%23404040'/%3E%3C/svg%3E)
Diagnostic
Specialized in advanced diagnostic techniques using modern scan tools and oscilloscopes.
Repair
Expert in both traditional mechanical repairs and modern vehicle systems.
Additional Expertise
Documentation
Created over 500 detailed repair guides and technical documents.
Training
Conducted technical training sessions and contributed to repair databases.
Certifications & Research
Certifications
- ASE Master Technician Certification
- Advanced Diagnostic Specialist
- Hybrid/Electric Vehicle Systems
- Performance Tuning Expert
Research & Community
Actively researches emerging technologies and contributes to automotive forums.