ServlogUpdated 2026-06-25
Chevrolet Suburban Oil Change Interval & Oil Type
Compiled & reviewed by Nikolai Tsyrenov · Updated 2026-06-25
When to change the oil on a 2021-2025 (12th gen, T1XX) Chevrolet Suburban, and what oil it takes.
| Oil change interval | GM Oil Life System ~7,500 mi; by the monitor or at least yearly |
|---|---|
| Engine / oil | 5.3L or 6.2L V8 (0W-20 dexos1 Gen 3) or 3.0L Duramax diesel (0W-20 dexosD); 10-speed auto |
| Oil filter | Replace with every oil change |
Chevrolet Suburban note: Both gas V8s use Dynamic Fuel Management cylinder deactivation; a 3.0L Duramax diesel is also offered. GM only publishes a 45,000-mi SEVERE transmission interval — most towing/hot-climate use qualifies, so don't stretch it.
FAQ
How often should you change the oil in a Chevrolet Suburban?
GM Oil Life System ~7,500 mi; by the monitor or at least yearly.
What kind of oil does the Chevrolet Suburban take?
Chevrolet Suburban: 5.3L or 6.2L V8 (0W-20 dexos1 Gen 3) or 3.0L Duramax diesel (0W-20 dexosD); 10-speed auto. Use the grade and spec listed in your owner's manual or on the oil cap.
Should I use the normal or severe oil-change schedule?
Use the severe-service interval if you mostly drive short trips, in cold/dusty/hot climates, in stop-and-go traffic, or tow — which describes most real-world drivers.
← Full Chevrolet Suburban maintenance schedule · Oil change intervals for all cars
General guidance — confirm against your Chevrolet Suburban owner's manual.
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