The 2021 GMC Canyon uses Dexos1 Gen 2 motor oil for its gasoline engines, with the exact viscosity depending on the engine and climate; the Duramax diesel option uses Dexos2 oil. Always confirm the precise specification in the owner's manual or on the oil cap for your vehicle.
Gasoline engines
The following gasoline engine options in the 2021 Canyon require Dexos1 Gen 2 certified oil. The specific viscosity grade (0W-20 vs 5W-30) is provided by GM in the owner's manual and can vary by climate and service interval.
Gasoline engine oil options
- 2.5L I4 gasoline engine: Dexos1 Gen 2 oil; viscosity grade determined by GM for your region and model year (commonly 0W-20 or 5W-30).
- 3.6L V6 gasoline engine: Dexos1 Gen 2 oil; viscosity grade determined by GM for your region and model year (commonly 0W-20 or 5W-30).
Note: The exact viscosity grade is specified in your owner's manual or on the oil fill cap. Using the correct Dexos1 Gen 2 oil is important for performance and warranty compliance.
Diesel option: Duramax 2.8L
The Duramax turbodiesel in the Canyon requires Dexos2 oil. The precise viscosity is specified by GM in the manual, but 5W-40 is a common choice for many Duramax diesel applications.
Always verify the exact grade for your vehicle and climate in the owner's manual or by checking the oil fill cap. Using the wrong oil can affect emissions systems and warranty coverage.
Summary
In short, the 2021 GMC Canyon uses Dexos1 Gen 2 oil for its gasoline engines (with the exact viscosity listed in the manual), and Dexos2 oil for the 2.8L Duramax diesel (commonly 5W-40, but always confirm). Following GM’s specifications helps maintain performance, emissions compliance, and warranty coverage.