2008 GMC Sierra 2500HD Engine Overview

The 2008 GMC Sierra 2500HD is a heavy-duty pickup truck renowned for its robust performance and capability. At the heart of this vehicle is the powerful 6.6L V8 diesel engine, which is designed to meet the demands of both work and leisure. This engine is part of the Duramax family and is known for its durability and efficiency.

Engine Specifications

The 6.6L V8 diesel engine in the 2008 GMC Sierra 2500HD boasts impressive specifications that contribute to its performance. Below is a detailed chart of the engine specifications:

Specification Details
Engine Type 6.6L V8 Diesel (Duramax)
Displacement 6.6 liters (403 cubic inches)
Horsepower 365 hp @ 3,000 RPM
Torque 660 lb-ft @ 1,600 RPM
Fuel System Direct injection
Compression Ratio 16.8:1
Turbocharger Yes, Variable Geometry Turbocharger
Transmission Options 6-speed automatic (Allison 1000)
Max Towing Capacity Up to 13,000 lbs (conventional)

Engine Configuration

The engine configuration of the 2008 GMC Sierra 2500HD is designed for optimal performance and efficiency. Key features include:

  • V8 Configuration: The 6.6L engine features a V8 layout, which provides a balance of power and smooth operation.
  • Turbocharged: The variable geometry turbocharger enhances power delivery and efficiency, especially under load.
  • Direct Injection: This technology improves fuel atomization and combustion efficiency, leading to better performance and lower emissions.
  • Heavy-Duty Construction: The engine is built with robust materials to withstand the rigors of heavy-duty use.

Engine Oil Specifications

Proper maintenance of the engine oil is crucial for the longevity and performance of the 2008 GMC Sierra 2500HD’s 6.6L V8 diesel engine. Below are the recommended engine oil specifications:

  2008 GMC Sierra 5.3 Engine Specs and Maintenance Guide
Specification Details
Oil Type 5W-40 Synthetic Diesel Engine Oil
Oil Capacity (with filter) 10 quarts (9.5 liters)
Oil Filter AC Delco PF2232 or equivalent

Service Intervals

Regular maintenance is essential to keep the engine running smoothly. The following service intervals are recommended for the 2008 GMC Sierra 2500HD:

  1. Oil Change Interval: Every 7,500 miles or 6 months, whichever comes first.
  2. Oil Filter Replacement: Replace with every oil change.
  3. Fuel Filter Replacement: Every 15,000 miles or as needed.
  4. Air Filter Replacement: Inspect every 30,000 miles; replace as necessary.
  5. Coolant Flush: Every 100,000 miles or as needed.

Conclusion

The 2008 GMC Sierra 2500HD equipped with the 6.6L V8 diesel engine is a formidable choice for those seeking a powerful and reliable heavy-duty truck. With its impressive specifications, robust engine configuration, and clear maintenance guidelines, this vehicle is well-suited for both work and recreational use. Regular maintenance and adherence to service intervals will ensure that the engine continues to perform at its best for years to come.

Categories: GMC

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