The oil capacity varies by engine: the gasoline 6.6L V8 holds about 8 quarts of engine oil (with filter). The Duramax 6.6L turbo-diesel requires about 15 quarts (with filter).
In 2022, GMC offered the Sierra 2500HD with two 6.6-liter powertrains: a gasoline V8 and a Duramax turbo-diesel. This article explains the exact capacities for each engine, how they relate to oil changes, and practical tips for keeping the engine properly lubricated.
Engine options and oil capacities
The following list shows the official approximate oil capacities for each engine option available in the 2022 Sierra 2500HD. Each capacity includes the oil filter's contribution.
- Gasoline 6.6L V8: about 8 quarts (7.6 L) of engine oil, with filter.
- Duramax 6.6L Turbo-Diesel: about 15 quarts (14.2 L) of engine oil, with filter.
These figures are intended as a general guide. Always confirm with the owner's manual or your GMC dealer, as capacity can vary slightly with engine configuration or aftermarket filters.
How to check and change the oil on the 2022 Sierra 2500HD
Before performing an oil change or checking the level, follow these steps to ensure accuracy and safety.
- Warm up the engine to operating temperature, then turn it off and wait a few minutes for the oil to drain.
- Park on level ground and apply the parking brake; place a drain pan beneath the oil pan.
- Remove the oil fill cap on top of the engine to vent, then remove the drain plug to drain used oil.
- Replace the oil filter before refilling; install a new gasket on the drain plug and torque to specification.
- Refill with the recommended oil quantity for your engine (8 quarts for the gas 6.6L, or 15 quarts for the Duramax 6.6L), then check the level with the dipstick and add small amounts as needed to reach full mark.
- Run the engine for a few minutes, recheck the level again, and inspect for leaks around the drain plug and filter.
Note: Use the correct oil grade and viscosity as specified in the owner's manual. The steps above are a general guide; if you are unsure, have a professional perform the change.
Summary
The 2022 GMC Sierra 2500HD offers two 6.6-liter powertrains with distinct oil capacities: the gasoline 6.6L V8 takes about 8 quarts of oil, while the Duramax 6.6L turbo-diesel uses about 15 quarts. Always confirm exact figures in the owner's manual and use the recommended oil type and change interval for your climate and driving conditions. Regular checks help prevent low oil levels and engine damage.