The 2015 GMC Yukon generally uses Dexos1 Gen 2 motor oil with a viscosity of 5W-30, and the typical capacity is about 8 quarts (including the filter). Some climates or engine configurations may specify 0W-20; always confirm with the owner's manual or under-hood label for your exact VIN.
Beyond the short answer, this article explains the exact oil specification for the Yukon’s V8 engines, how climate and driving conditions affect the choice, and how to verify the right grade for your vehicle.
Oil specifications by engine
Note: The following guidelines reflect GM’s Dexos1 Gen 2 requirements for common Yukon configurations in 2015 (5.3L V8 and 6.2L V8). Always verify with your VIN-specific manual or GM’s online service portal.
- Dexos1 Gen 2, 5W-30: The standard and recommended viscosity for most 2015 Yukon V8 engines. This synthetic or synthetic-blend oil meets GM’s Dexos1 Gen 2 specification and supports warranty requirements.
- Dexos1 Gen 2, 0W-20: Some climates or specific configurations may list 0W-20 as acceptable. Check the engine’s under-hood label or the owner's manual for your exact engine/VIN.
In practice, most Yukon owners benefit from using Dexos1 Gen 2 5W-30 unless your manual indicates otherwise.
Oil capacity and maintenance interval
Knowledge of capacity and service intervals helps with planning and scheduling. The following notes apply to typical 2015 Yukon engines.
- Oil capacity: About 8 quarts (7.5–8.0 qt) with a filter for the common V8 configurations.
- Change interval: With Dexos1 Gen 2 oils, a typical factory recommendation is around 7,500 miles for normal driving, and more frequent changes if you tow, drive in severe conditions, or use older oil life indicators.
Always follow the GM oil life monitor and the dealer’s service schedule, and adjust for heavy towing or extreme conditions.
How to verify the exact spec for your Yukon
Because the Yukon had multiple V8 options in 2015, the precise oil spec can vary by engine code and region. Use these checks to confirm the right oil for your vehicle:
- Check the vehicle’s under-hood information sticker for the recommended oil viscosity and Dexos specification.
- Consult the owner's manual or GM’s owner site with your VIN to pull up the exact specification.
- If in doubt, contact a GMC dealer or a trusted mechanic with your VIN to confirm Dexos1 Gen 2 5W-30 versus alternatives.
In short, verify with VIN-specific sources to ensure you have the right Dexos specification for your engine.
Summary
For a 2015 GMC Yukon, the safest, most common choice is Dexos1 Gen 2 5W-30 oil, with about 8 quarts capacity and a typical service interval around 7,500 miles under normal driving. Always verify the exact grade and capacity for your specific engine and climate by checking the owner’s manual, the under-hood label, or the VIN-specific GM portal.