The 2020 GMC models with the 5.3-liter V8 typically require eight quarts of engine oil when performing a full drain and filter change, and about seven quarts if the filter is not replaced.
This capacity applies to popular GMC trucks such as the Sierra 1500 and related models that use the 5.3L V8. Exact amounts can vary slightly by drivetrain configuration, so it’s best to confirm with the owner’s manual or your dealer for your specific vehicle.
Oil capacity you should expect
Below are the standard capacity figures you’re likely to encounter during an oil change on a 2020 GMC with the 5.3L V8. These values assume a new oil filter is installed and the drain plug is properly tightened.
- With a new oil filter installed: about 8 quarts (approximately 7.6 liters).
- Without replacing the filter: about 7 quarts (approximately 6.6 liters).
During a maintenance service, start by adding roughly 7.5 quarts and then recheck the oil level with the dipstick after the engine has run and cooled, adjusting as needed to reach the full mark without overfilling.
Notes on oil type and maintenance
Use the engine oil specification recommended by GMC for the 5.3L V8, typically Dexos1 Gen 2 certified oil whose viscosity is specified in your owner's manual for your climate and driving conditions. If your vehicle includes variants like AFM (Active Fuel Management), capacity and service procedures can differ slightly; always verify the exact figures for your VIN in the official documentation.
Summary
In summary, a 2020 GMC with the 5.3L V8 generally takes 8 quarts of engine oil with a new filter, or 7 quarts if the filter is not replaced. Always check your owner's manual or consult a dealer to confirm the precise capacity for your specific vehicle configuration.