GMC Savana 1996-present 6.6L Engine Specifications
Explore the detailed 6.6L engine specifications for the GMC Savana from 1996 to the present. This guide covers engine performance, maintenance, and compatibility, making it a valuable resource for mechanics and owners.
Overview Specifications
This document provides detailed specifications and technical information about the 6.6L engine used in the GMC Savana from 1996 to the present. It is designed to assist users in understanding the engine's features, performance, and maintenance requirements. The document is organized into sections for easy navigation, with subsections breaking down specific aspects of the engine. Use the search and navigation instructions to quickly find the information you need.
How to Use
Use the search bar to enter keywords related to the 6.6L engine, such as 'horsepower' or 'torque'. The results will highlight relevant sections and subsections for quick access.
Scroll through the document or use the table of contents to jump to specific sections. Each section is clearly labeled and contains subsections with detailed technical points.
Key Specifications
Displacement
6.6L
Horsepower
300-445 HP
Torque
520-910 lb-ft
Fuel Type
Diesel/Gasoline
Fuel Economy
12-18 MPG
Available Specifications
Engine Performance
This section covers the performance metrics of the 6.6L engine, including horsepower, torque, and fuel efficiency. It also includes details on how the engine performs under different driving conditions.
Engine Performance
This section covers the performance metrics of the 6.6L engine, including horsepower, torque, and fuel efficiency. It also includes details on how the engine performs under different driving conditions.
Horsepower and Torque
- Horsepower: 300-445 HP (varies by model year)
- Torque: 520-910 lb-ft (varies by model year)
- Peak horsepower achieved at 3,000 RPM
- Peak torque achieved at 1,600 RPM
- Turbocharged variants available for increased performance
- Diesel and gasoline engine options
Fuel Efficiency
- Average fuel economy: 12-18 MPG (city/highway)
- Diesel variants offer better fuel efficiency
- Direct injection technology improves combustion efficiency
- Eco-mode available in newer models
- Emissions compliant with EPA standards
- Optional fuel-saving features like start-stop technology
Engine Design
This section delves into the design and construction of the 6.6L engine, including its materials, layout, and key components. It also highlights innovations and improvements over the years.
Engine Design
This section delves into the design and construction of the 6.6L engine, including its materials, layout, and key components. It also highlights innovations and improvements over the years.
Materials and Construction
- Cast iron block for durability
- Aluminum cylinder heads for weight reduction
- Forged steel crankshaft for strength
- High-strength connecting rods
- Dual overhead camshaft (DOHC) design
- Variable valve timing (VVT) in newer models
Key Components
- Turbocharger for increased power output
- Intercooler for cooling compressed air
- High-pressure common rail fuel system (diesel models)
- Electronic throttle control
- Advanced engine management system
- Integrated exhaust manifold for improved efficiency
Maintenance and Durability
This section provides information on maintaining the 6.6L engine, including recommended service intervals, common issues, and tips for ensuring long-term durability.
Maintenance and Durability
This section provides information on maintaining the 6.6L engine, including recommended service intervals, common issues, and tips for ensuring long-term durability.
Service Intervals
- Oil change every 7,500-10,000 miles
- Air filter replacement every 15,000 miles
- Fuel filter replacement every 30,000 miles
- Coolant flush every 100,000 miles
- Timing belt inspection every 60,000 miles
- Regular diagnostic checks for optimal performance
Common Issues and Solutions
- Turbocharger failure in high-mileage engines
- EGR valve clogging in diesel models
- Oil leaks from gaskets and seals
- Cooling system issues in older models
- Regular cleaning of fuel injectors recommended
- Use of high-quality fuel and lubricants advised
Search Specifications
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Engine Specifications
Overview
- Type
- V8 Turbo-Diesel
- Configuration
- 90-degree V8
- Platform
- Duramax
- Material
- Cast Iron Block
- Location
- Front, Longitudinal
Dimensions
- Length
- 32.5 inches (825.5 mm)
- Width
- 28.7 inches (729 mm)
- Height
- 31.2 inches (792.5 mm)
- Weight
- 835 lbs (379 kg)
- Bore
- 4.06 inches (103 mm)
- Stroke
- 3.9 inches (99 mm)
- Displacement
- 403 cubic inches (6.6 liters)
Materials
- Block
- Cast Iron
- Cylinder Head
- Aluminum
- Pistons
- Forged Aluminum
- Crankshaft
- Forged Steel
- Valves
- Stainless Steel
Features
- Fuel System
-
- High-Pressure Common Rail Injection
- Direct Injection
- Variable Geometry Turbocharger
- Cooling System
-
- Liquid-Cooled
- Dual Thermostats
- High-Capacity Radiator
- Emissions Control
-
- Exhaust Gas Recirculation (EGR)
- Diesel Particulate Filter (DPF)
- Selective Catalytic Reduction (SCR)
- Performance
-
- Horsepower: 445 hp @ 2800 rpm
- Torque: 910 lb-ft @ 1600 rpm
- Compression Ratio: 16.0:1
- Electronics
-
- Engine Control Module (ECM)
- On-Board Diagnostics (OBD-II)
- Integrated Glow Plug Controller
Safety Features
- Engine Protection
-
- Overboost Protection
- Overheat Protection
- Low Oil Pressure Shutdown
- Emissions Safety
-
- DPF Regeneration Monitoring
- Exhaust Temperature Sensors
- Ammonia Slip Catalyst
Comfort Features
- Noise Reduction
-
- Acoustic Engine Cover
- Hydraulic Engine Mounts
- Sound Dampening Materials
- Vibration Control
-
- Balanced Crankshaft
- Dual-Mass Flywheel
- Hydraulic Lash Adjusters
Accessories
- Cooling
-
- Electric Cooling Fan
- High-Flow Water Pump
- Oil Cooler
- Fuel
-
- High-Pressure Fuel Pump
- Fuel Filter with Water Separator
- Fuel Heater
- Air Management
-
- Variable Geometry Turbocharger
- Charge Air Cooler
- Air Intake Heater
Maintenance
- Service interval
- 7,500 miles or 6 months
- Service Items
-
- Oil and Filter Change
- Fuel Filter Replacement
- Air Filter Inspection
- Coolant Level Check
- Belt Tension Inspection
- Maintenance Notes
- Use only approved diesel engine oil and filters. Regularly check for DPF regeneration cycles.
Warranty
- Basic
- Miles: 36,000Years: 3Coverage: Bumper-to-Bumper
- Powertrain
- Miles: 100,000Years: 5Coverage: Engine, Transmission, Drivetrain
- Emissions
- Miles: 50,000Years: 5Coverage: Catalytic Converter, DPF, SCR System
- Corrosion
- Miles: 100,000Years: 6Coverage: Perforation from Corrosion
Production Details
- Manufacturer
- General Motors
- Manufacturing Process
-
- Precision Casting
- CNC Machining
- Robotic Assembly
- Quality Control
- inspection: 100% Engine TestingTolerances: Micron-Level PrecisionCertifications: ISO 9001, ISO 14001
- Sustainability Practices
-
- Recycled Materials Usage
- Low-Emission Manufacturing
- Waste Reduction Programs
- Production Metrics
- Units Per Year: 150,000Defect Rate: Less than 0.1%Lead Time: 4 Weeks
Service Information for 6.6l engine Service
Maintenance and service requirements specific to this component
- Oil and Filter Change
- Fuel Filter Replacement
- Air Filter Inspection
- Coolant Level Check
- Belt Tension Inspection
Use only approved diesel engine oil and filters.
- Turbocharger Inspection
- EGR System Cleaning
- DPF Regeneration Check
- Coolant Flush and Replacement
Ensure proper DPF regeneration cycles are occurring.
- Timing Belt Replacement
- Injector Cleaning
- Complete Engine Diagnostics
- Compression Test
Critical to replace timing belt to prevent engine damage.
Common Questions
Find answers to common questions about torque specifications
Q1 What vehicles are compatible with the 6.6L engine in the 1996-Present GMC Savana?
What vehicles are compatible with the 6.6L engine in the 1996-Present GMC Savana?
The 6.6L engine, specifically the Duramax LB7 and LLY variants, is compatible with the GMC Savana from 1996 to the present. It is designed for heavy-duty applications and is commonly found in Savana vans and similar GM models. Compatibility extends to both 2500 and 3500 series vans, but always verify the specific year and model for fitment, as minor variations may exist.
Q2 What are the maintenance requirements for the 6.6L engine in the GMC Savana?
What are the maintenance requirements for the 6.6L engine in the GMC Savana?
The 6.6L engine requires regular maintenance to ensure optimal performance. Key tasks include oil changes every 7,500 miles, fuel filter replacements every 15,000 miles, and air filter inspections every 12,000 miles. Additionally, coolant flushes should be performed every 50,000 miles, and the serpentine belt and tensioner should be checked every 30,000 miles. Adhering to this schedule helps prevent engine wear and extends its lifespan.
Q3 How do I replace the 6.6L engine in a GMC Savana?
How do I replace the 6.6L engine in a GMC Savana?
Replacing the 6.6L engine involves several steps: 1) Disconnect the battery and drain fluids. 2) Remove the hood, radiator, and accessories. 3) Disconnect wiring harnesses, hoses, and exhaust components. 4) Support the engine with a hoist and remove mounting bolts. 5) Lift the engine out carefully. Installation is the reverse process, ensuring all connections are secure and torqued to specifications. Refer to the service manual for detailed instructions.
Q4 What should I do if my 6.6L engine is overheating?
What should I do if my 6.6L engine is overheating?
If your 6.6L engine is overheating, first check the coolant level and inspect for leaks. Ensure the radiator and cooling fans are functioning properly. If the issue persists, inspect the thermostat, water pump, and hoses for damage or blockages. A clogged radiator or failing head gasket could also cause overheating. Use a diagnostic tool to check for error codes and consult a professional if necessary.
Q5 How can I optimize the performance of my 6.6L engine?
How can I optimize the performance of my 6.6L engine?
To optimize the 6.6L engine's performance, use high-quality diesel fuel and additives to improve combustion. Regularly clean or replace air and fuel filters to ensure proper airflow and fuel delivery. Consider upgrading the exhaust system and tuning the engine with a performance chip for better power and efficiency. Regular maintenance, including timely oil changes and coolant flushes, is also crucial for 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.
GMC Savana 6.6L Engine Service Manual
Coming SoonThis manual provides detailed instructions for servicing and repairing the 6.6L engine, including troubleshooting, maintenance, and replacement procedures.
Technical Service Bulletin for 6.6L Engine Updates
Coming SoonThis bulletin outlines important updates and fixes for the 6.6L engine, including software updates and component recalls.
GMC Savana 6.6L Engine Parts Catalog
Coming SoonThis catalog lists all OEM and aftermarket parts compatible with the 6.6L engine, including part numbers and descriptions.
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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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