GMC Sierra 2500 Engine Oil Capacity: All Years & Engines

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The GMC Sierra 2500 and Sierra 2500HD have been produced from 2001 to 2025 with multiple engine options including gasoline and diesel powerplants. Using the correct oil capacity, viscosity, and type is essential for maintaining performance and longevity. This guide lists all model years with full oil specifications and maintenance recommendations.​

The Sierra 2500HD designation was introduced in 2001 as GMC’s heavy-duty truck offering. Over the years, the lineup has featured various engine configurations, including the 6.0L Vortec V8, 6.6L gas V8, and multiple generations of the Duramax diesel engine. Each engine requires specific oil capacities and viscosity ratings for optimal protection.​

2025 GMC Sierra 2500 Engine Oil Capacity

The 2025 GMC Sierra 2500HD uses either a 6.6L gas V8 requiring 8.0 quarts or a 6.6L Duramax diesel requiring 10.0 quarts of full synthetic oil. The gas engine uses dexos1 5W-30 for optimal fuel economy and protection, while the diesel uses 15W-40 or 5W-40 meeting CJ-4 or CK-4 specifications.​

2024 GMC Sierra 2500 Engine Oil Capacity

The 2024 GMC Sierra 2500HD maintains the same engine options as 2025 with identical oil specifications. Both engines require full synthetic oil with dexos1 5W-30 for the gas engine and CJ-4 or CK-4 rated 15W-40 for the diesel.​

2023 GMC Sierra 2500 Engine Oil Capacity

The 2023 GMC Sierra 2500HD requires 8.0 quarts of dexos1 5W-30 full synthetic oil for the gas engine and 10.0 quarts of 15W-40 synthetic oil for the Duramax diesel.​

2022 GMC Sierra 2500 Engine Oil Capacity

The 2022 GMC Sierra 2500HD uses the same oil specifications as 2020-2025 models. The 6.6L gas engine requires 8.0 quarts of dexos1 5W-30, while the diesel requires 10.0 quarts of 15W-40.​

2021 GMC Sierra 2500 Engine Oil Capacity

The 2021 GMC Sierra 2500HD continues with two engine options requiring full synthetic oil. The gas V8 needs 8.0 quarts of 5W-30, while the Duramax diesel needs 10.0 quarts of 15W-40.​

2020 GMC Sierra 2500 Engine Oil Capacity

The 2020 GMC Sierra 2500HD introduced the new 6.6L gas V8 requiring 8.0 quarts of 0W-20 synthetic oil. The Duramax diesel continues with 10.0 quarts of 15W-40 or 5W-40 synthetic oil.

2019 GMC Sierra 2500 Engine Oil Capacity

The 2019 GMC Sierra 2500HD uses the 6.0L Vortec V8 requiring 6.0 quarts of 5W-30 synthetic oil. The L5P Duramax diesel requires 10.0 quarts of 15W-40 synthetic oil meeting CJ-4 or CK-4 specifications.​

2018 GMC Sierra 2500 Engine Oil Capacity

The 2018 GMC Sierra 2500HD offers the 6.0L gas engine needing 6.0 quarts of 5W-30 synthetic oil and the L5P Duramax diesel needing 10.0 quarts of 15W-40.​

2017 GMC Sierra 2500 Engine Oil Capacity

The 2017 GMC Sierra 2500HD introduced the new L5P Duramax diesel requiring 10.0 quarts of 15W-40 synthetic oil. The 6.0L gas engine requires 6.0 quarts of 5W-30.​

2016 GMC Sierra 2500 Engine Oil Capacity

The 2016 GMC Sierra 2500HD uses the LML Duramax diesel requiring 10.0 quarts of 15W-40 CJ-4 synthetic oil and the 6.0L gas V8 requiring 6.0 quarts of 5W-30.​

2015 GMC Sierra 2500 Engine Oil Capacity

The 2015 GMC Sierra 2500HD features the 6.0L gas engine with 6.0 quarts capacity and the LML Duramax diesel with 10.0 quarts capacity.​

2014 GMC Sierra 2500 Engine Oil Capacity

The 2014 GMC Sierra 2500HD continues with the 6.0L gas V8 needing 6.0 quarts of 5W-30 and the LML Duramax requiring 10.0 quarts of 15W-40.​

2013 GMC Sierra 2500 Engine Oil Capacity

The 2013 GMC Sierra 2500HD uses 6.0 quarts of 5W-30 for the gas engine and 10.0 quarts of 15W-40 for the diesel.​

2012 GMC Sierra 2500 Engine Oil Capacity

The 2012 GMC Sierra 2500HD features the same oil requirements as 2011 with 6.0 quarts for gas and 10.0 quarts for diesel.​

2011 GMC Sierra 2500 Engine Oil Capacity

The 2011 GMC Sierra 2500HD introduced the LML Duramax diesel requiring 10.0 quarts of 15W-40 CJ-4 rated oil. The gas engine uses 6.0 quarts of 5W-30.​

2010 GMC Sierra 2500 Engine Oil Capacity

The 2010 GMC Sierra 2500HD uses the LMM Duramax diesel requiring 10.0 quarts of 15W-40 and the 6.0L gas engine requiring 6.0 quarts of 5W-30.​

2009 GMC Sierra 2500 Engine Oil Capacity

The 2009 GMC Sierra 2500HD features the LMM Duramax diesel with 10.0 quarts capacity and the 6.0L gas V8 with 6.0 quarts capacity.​

2008 GMC Sierra 2500 Engine Oil Capacity

The 2008 GMC Sierra 2500HD introduced the LMM Duramax diesel requiring 10.0 quarts of 15W-40 CJ-4 oil. The gas engine requires 6.0 quarts of 5W-30.​

2007 GMC Sierra 2500 Engine Oil Capacity

The 2007 GMC Sierra 2500HD was redesigned and features the LBZ Duramax diesel requiring 10.0 quarts of 15W-40 and the 6.0L gas V8 requiring 6.0 quarts.​

2006 GMC Sierra 2500 Engine Oil Capacity

The 2006 GMC Sierra 2500HD features the 6.0L gas engine requiring 6.0 quarts of 5W-30 and the LBZ Duramax diesel requiring 10.0 quarts of 15W-40.​

2005 GMC Sierra 2500 Engine Oil Capacity

The 2005 GMC Sierra 2500HD uses the LLY Duramax diesel requiring 10.0 quarts of 15W-40 and the 6.0L gas engine requiring 6.0 quarts of 5W-30.​

2004 GMC Sierra 2500 Engine Oil Capacity

The 2004 GMC Sierra 2500HD features both LB7 and LLY Duramax diesel engines requiring 10.0 quarts of 15W-40 and the 6.0L gas engine requiring 6.0 quarts.​

2003 GMC Sierra 2500 Engine Oil Capacity

The 2003 GMC Sierra 2500HD uses the LB7 Duramax diesel requiring 10.0 quarts of 15W-40 and the 6.0L gas engine requiring 6.0 quarts of 5W-30.​

2002 GMC Sierra 2500 Engine Oil Capacity

The 2002 GMC Sierra 2500HD uses the 6.0L gas engine requiring 6.0 quarts of 5W-30 and the LB7 Duramax diesel requiring 10.0 quarts of 15W-40.​​

2001 GMC Sierra 2500 Engine Oil Capacity

The 2001 GMC Sierra 2500HD was the first model year for the HD designation and featured the 6.0L gas V8 requiring 6.0 quarts and the LB7 Duramax diesel requiring 10.0 quarts.​

Oil Maintenance and Service Tips

Checking Engine Oil Level

Check the engine oil level regularly using the dipstick when the engine is cold and on level ground. Remove the dipstick, wipe it clean, reinsert fully, and remove again to read the level. The oil should fall between the minimum and maximum marks.​

Oil Change Intervals

For gasoline engines, the recommended oil change interval is 7,500 miles or 12 months under normal driving conditions. For diesel engines, the interval is also 7,500 miles with full synthetic oil meeting CJ-4 or CK-4 specifications. Severe driving conditions may require more frequent oil filter replacement at 5,000 mile intervals.​

Oil Filter Replacement

Always replace the oil filter during every oil change. For 6.0L gas engines, use AC Delco PF48 or equivalent filters. For 6.6L engines (gas and diesel), use AC Delco PF63 or Motorcraft FL500S filters. Hand tighten the oil filter to 18 lb-ft of torque to ensure a proper seal.​

Synthetic vs Conventional Oil

Full synthetic oil is recommended for all modern Sierra 2500HD models (2015 and newer) to provide maximum protection and extended drain intervals. Diesel engines specifically require full synthetic oil meeting API CJ-4 or CK-4 specifications. Older models may use synthetic blend or conventional oil, but synthetic provides better protection under extreme temperatures.​

Severe Driving Conditions

Severe driving includes frequent towing, dusty conditions, extensive idling, or short trips under 10 miles. Under these conditions, reduce the oil change interval to 5,000 miles and inspect the oil filter regularly for premature clogging.​

When exploring GMC, don’t miss our detailed guides on popular models like the GMC Sierra 1500, GMC Acadia, GMC Savana 2500, and GMC Sierra 3500. Understanding engine oil capacity is crucial for proper maintenance, and our expert resources explain the exact oil requirements for these models. You’ll also find insights on recommended oil types, service intervals, and common issues linked to incorrect oil levels, ensuring your GMC always delivers reliable performance.

Frequently Asked Questions

What kind of oil does a GMC Sierra 2500 use?

The GMC Sierra 2500 requires full synthetic oil for most modern engines. Gasoline engines use dexos1 5W-30 or 0W-20, while diesel engines require 15W-40 or 5W-40 meeting CJ-4 or CK-4 specifications. Older models may use synthetic blend or conventional oil.​

How much oil does a GMC Sierra 2500 take?

Oil capacity varies by engine type. The 6.0L gas V8 requires 6.0 quarts with filter, the 6.6L gas V8 requires 8.0 quarts, and all 6.6L Duramax diesel engines require 10.0 quarts with filter.​

What is the recommended oil type for a GMC Sierra 2500?

The recommended oil type is full synthetic for 2015 and newer models. Gasoline engines require dexos1 certified oil in 5W-30 or 0W-20 viscosity, while diesel engines require CJ-4 or CK-4 rated 15W-40 or 5W-40 synthetic oil.​

What is the oil change interval for a GMC Sierra 2500?

The standard oil change interval is 7,500 miles or 12 months under normal driving conditions for both gasoline and diesel engines when using full synthetic oil. Severe driving conditions may require oil filter replacement every 5,000 miles.​

Can I use 5W-40 instead of 15W-40 in my Duramax?

Yes, 5W-40 synthetic oil meeting CJ-4 or CK-4 specifications is acceptable for all Duramax engines and is preferred for cold weather operation below 0 degrees Fahrenheit. The 15W-40 viscosity is acceptable for ambient temperatures above 0 degrees.​

What oil filter fits a GMC Sierra 2500?

For 6.0L gas engines, use AC Delco PF48 or equivalent Mobil 1 M1-110A filters. For 6.6L engines (both gas and diesel), use AC Delco PF63 or Motorcraft FL500S filters.​

Conclusion

The GMC Sierra 2500 and Sierra 2500HD require specific oil capacities and viscosity ratings depending on the engine configuration. Gasoline engines typically use 6.0 to 8.0 quarts of 5W-30 synthetic oil, while diesel engines require 10.0 quarts of 15W-40 synthetic oil meeting CJ-4 or CK-4 specifications.​

Using manufacturer-approved oil specifications is essential for maintaining engine performance, fuel economy, and longevity. Always refer to the owner’s manual for your specific model year and follow the recommended oil change interval of 7,500 miles or 12 months.​

Proper maintenance with quality synthetic oil and regular oil filter replacement will ensure your Sierra 2500 delivers reliable performance and protection for years to come.​