Complete Oil Specifications
Your 2022 GMC Sierra 1500 5.3L V8 requires 0W-20 full synthetic oil meeting dexos1 Gen 3 — GM’s proprietary third-generation specification designed for the EcoTec3 engine family.
Quick Reference
| Specification | Value |
|---|---|
| Viscosity | 0W-20 |
| GM Approval | dexos1 Gen 3 / API SP |
| ILSAC Rating | GF-6A |
| Capacity (with filter) | 8.0 quarts |
| Oil Filter | ACDelco PF63 |
| Normal Interval | 7500 miles or oil life monitor |
Why dexos1 Gen 3 is Required for the EcoTec3
The L84 5.3L EcoTec3 V8 uses both Active Fuel Management (AFM) and Dynamic Fuel Management (DFM) — cylinder deactivation technologies that selectively disable between 2 and 7 cylinders depending on load. The AFM/DFM lifter system relies on extremely precise oil pressure control. dexos1 Gen 3 is specifically formulated to maintain stable oil film thickness at all viscosities and protect against Low Speed Pre-Ignition (LSPI).
Using non-dexos1 oil will:
- ❌ Risk AFM/DFM lifter collapse and catastrophic engine damage
- ❌ Void the GM powertrain warranty for engine failures
- ❌ Cause rough idle from irregular cylinder deactivation
GM-Approved Oil Brands
-
✅ ACDelco dexos1 Gen 3 Full Synthetic 0W-20
-
✅ Mobil 1 dexos1 Full Synthetic 0W-20
-
✅ Castrol Edge dexos1 Full Synthetic 0W-20
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✅ Pennzoil Platinum dexos1 Full Synthetic 0W-20
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✅ Valvoline dexos1 Full Synthetic 0W-20
Look for dexos1 Gen 3 on the label specifically — older dexos1 or dexos1 Gen 2 products may not meet the current Gen 3 specification.
Severe Service Check
You need more frequent changes if you:
- Tow a trailer, fifth wheel, or gooseneck regularly
- Use the truck for work with heavy daily payloads
- Drive in dusty or off-road conditions
- Experience extended idling (work trucks, first responders)
- Drive in extreme cold (below -20°F / -29°C)
Always follow the Oil Life Monitor in the Driver Information Center — it overrides fixed mileage intervals based on actual engine conditions.
Installation Details
Drain Plug Torque: 18 ft-lbs
Always replace the drain plug gasket — do not over-torque on the cast aluminum oil pan.
OEM Filter: ACDelco PF63
Aftermarket Filters:
-
Mobil 1 M1-113A
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K&N HP-1017
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Bosch 3400
Pro Tip: The Sierra 5.3L holds 8 full quarts — buy a full case (12 quarts) to have enough for two changes. The oil drain plug is low on the driver’s-side of the pan; use ramps for ground clearance.
FAQs
What oil does a 2022 GMC Sierra 1500 5.3L V8 take?
0W-20 full synthetic dexos1 Gen 3 meeting API SP and ILSAC GF-6A.
How many quarts does it need?
8.0 quarts with a new filter.
Can I use 5W-30 instead of 0W-20?
No. The AFM/DFM lifter system in the EcoTec3 requires 0W-20 for proper cold-start operation. Using 5W-30 risks lifter failure.
What is dexos1 Gen 3?
GM’s third-generation oil specification, introduced to address LSPI and provide improved protection for cylinder deactivation systems. It supersedes older dexos1 and dexos1 Gen 2 formulations.
Is synthetic oil required?
Yes. Full synthetic dexos1 Gen 3 is mandatory for the EcoTec3 V8.
How often should I change the oil on my Sierra?
Follow the Oil Life Monitor. Typically every 7,500 miles for normal driving, but the system adjusts based on towing, temperature, and idle time.
Does towing affect oil change intervals?
Yes significantly. Heavy towing can trigger an oil change reminder as soon as 3,000 miles under hot, sustained conditions.
Need these specs on your phone? Download OilFinderPro app for offline access and oil change reminders.
Last verified: 2026-02-23 | Source: Needs OEM source confirmation (manual/spec page URL pending).